GB LDM valves with Belimo actuators

Transcription

1 GB LDM valves with Belim actuatrs --

2 Kv cefficient calculatin Calculatin itself is carried ut with respect t cnditins f regulating circuit and perating medium accrding t equatins mentined belw. Cntrl valve must be designed t be able t regulate maximal flw quantity at given perating cnditins. At the same time it is necessary t check whether minimal flw quantity can be even regulated r nt. Cnditin is the fllwing rati r>kvs/kv Because f eventual minus tlerance 0% f Kv00 against Kvs and requirement fr pssible regulatin within range f maximal flw (decrement and increase f flw), prducer recmmends t select Kvs value higher than maximal perating Kv value: Kvs =.. Kv min Flw characteristic selectin in regard f valve strke T make right selectin f valve flw characteristic, it is suitable t carry ut checking f what strke values will be reached in different peratin states. We recmmend t carry ut such checking at least fr minimal, nminal and maximal flw rates. The principle fr flw characteristic selectin is t avid, if pssible, 5 0% f the beginning and end f the valve strke range. T calculate valve strke at different perating cnditins with different types f flw characteristics is pssible with the advantage f using LDM s calculatin prgramme VALVES. The prgramme serves fr cmplete design f valve frm Kv calculatin t specificatin f a cncrete valve with its actuatr. It is necessary t take int accunt t which extent Qmax invlve "precautinary additins" that culd result in valve versizing. Relatins f Kv calculatin Liquid Gas Kv = Superh. steam Sat. steam Pressure drp p >p/ p <p/ Q 00 Q.T 54 n n p.p Q v 00 m p Qm v.x 00 p Abve critical flw f vapurs and gases When pressure rati is abve critical (p /p < 0.54), speed f flw reaches acustic velcity at the narrwest sectin. This event can cause higher level f nisiness. Then it is cnvenient t use a thrttling system ensuring lw nisiness (multi-step pressure reductin, damping rifice plate at utlet). Dimensins and units Pressure drp p > = p / p = < p / p.qn.t 54.p n Q v 00 m p Qm v.x 00 p -- Valve flw characteristics Kv/Kv L H/H L -linear characteristic Kv/Kv 00 = (H/H 00 ) R -equal-percentage characteristic (4-percentage) (4. H/H 00 ) Kv/Kv = e 00 P - parablic characteristic Kv/Kv 00 = (H/H 00 ) S - LDM spline characteristic ) Kv/Kv 00 = (H/H 00 )-0.80.(H/H (H/H 00 ) (H/H 00 ) (H/H 00) (H/H 00 ) Marking Unit Name f dimensin Kv m.h - Flw cefficient under cnditin f units f flw Kv 00 m.h - Flw cefficient at nminal strke Kvmin m.h - Flw cefficient at minimal strke Kvs m.h - Valve nminal flw cefficient Q m.h - Flw rate in perating cnditins (T, p ) - Qn Nm.h Flw rate in nrmal cnditins (0 C, 0.0 Mpa) - Qm kg.h Flw rate in perating cnditins (T, p ) p MPa Upstream abslute pressure p MPa Dwnstream abslute pressure ps MPa Abslute pressure f saturated steam at given temperature (T ) p MPa Valve differential pressure ( p = p - p ) - kg.m Prcess medium density in perating cnditins (T, p ) - n kg.nm Gas density in nrmal cnditins (0 C, 0.0 Mpa) - v m.kg Specific vlume f steam when temperature T and pressure p - v m.kg Specific vlume f steam when temperature T and pressure p / T K Abslute temperature at valve inlet (T = 7 + t) x r Prprtinate weight vlume f saturated steam in wet steam Rangeability P S R

3 Principles fr plug type selectin V-prted plugs shuld nt t be used in abve - critical differential pressures with inlet pressure p > 0,4 MPa and fr regulatin f = saturated steam. In these cases we recmmend t use a perfrated plug. The perfrated plug shuld be als used always when cavitatin may ccur due t a high differential pressure value r valve prts ersin caused by high speed f prcess medium flw. If the parablic plug is used (because f small Kvs) fr pressures p >,6 MPa and abve - critical differential = pressures, it is necessary t clse bth plug and seat with a hard metal verlay, i.e. stellited trim. Packing - Bellws Bellws packing is suitable fr lw and high temperatures ranging frm -50 t 550 C. Bellws ensures abslute tightness t envirnment. Packing is equipped with safety PTFE packing as standard t prevent medium frm leaking in case f damage t bellws. Intensive linear frces are nt required. Packing - O -ring EPDM Packing is designed fr nn-aggressive media with temperature frm 0 t C. Packing excels with its reliability and lng time tightness. It has ability f sealing even if the valve stem is a bit damaged. Lw frictinal frces enables valve t be actuated with a lw-linear-frce actuatr. Service life f sealing rings depends n perating cnditins and it is mre than cycles n average. Applied t RV 0, RV 0 Packing - DRSpack (PTFE) Applied t RV xx Applicatin f bellws packing Bellws packing is suitable fr applicatins with very aggressive, txic r ther dangerus media that require abslute tightness t envirnment. In such case, it is necessary t check cmpatibility f used bdy material as well as the valve inner parts material with prcess medium. It is recmmended t use bellws with safety packing preventing medium frm leaking in case f damage t bellws when there is an extremely dangerus prcess medium used. Bellws is als a great slutin t use f prcess medium either with temperature belw zer when ice accretins cause premature damage t packing r with high temeperatures when bellws ensures medium cling. DRSpack (Direct Radial Sealing Pack) is a packing with high tightness at bth lw and high perating pressure values. It is the mst used type f packing suitable fr temperatures ranging frm 0 t 60 C. The ph range is frm 0 t 4. The packing enables using f actuatrs with lw linear frce. The design enables an easy change f the whle packing. The average service life f DRSpack is mre than cycles. Service life f bellws packing Bellws material C C Temperature 0 C C C nt applicable Values specified in the table abve shw minimal guaranteed number f cycles with the valve full strke when the bellws is fully lenghtened and pressed. In regulatin, when the valve mves nly in a prtin f the strke range at the inner centre f the valve, the service life f the bellws is many times lnger then depending n cncrete perating cnditins. --

4 Prcedure fr designing f tw-way valve Given: medium water, 55 C, static pressure at piping spt 000 kpa (0 bar), p DISP= 80 kpa (0,8 bar), p PIPELINE=5 kpa (0,5 bar), p APPLIANCE = 5 kpa (0,5 bar), nminal flw - - rate Q =8 m.h, minimal flw rate Q =, m.h. p DISP= p VALVE + p APPLIANCE + ppipeline p = p - p - p = = kpa (0,4 bar) VALVE DISP NOM APPLIANCE PIPELINE - Kv = Q NOM = 8 =,7 m.h pvalve 0,4 Precautinary additins fr prcess tlerances (prvided that flw rate Q was nt versized): Kvs = (, t,). Kv = (, t,).,7 = 4 t 6,5 m.h Nw we chse the nearest Kvs value frm thse available in ur - catalgue, i.e. Kvs = 6 m.h. This value crrespnds t nminal size f DN. Then if we chse flanged executin PN 6, bdy made f spheridal cast irn, with metal - PTFE seat sealing, packing PTFE and equal-percentage flw characteristic, we will get the fllwing specificatin N.: RV x XXX 4 R 6/0- x in the valve cde abve (RVx) stands fr valve executin (direct r reverse) and depends n type f used actuatr which shuld be chsen in respect t demands f regulating system (type, prducer, vltage, type f cntrl, necessary trque r linear frce, etc.) Determinatin f real pressure drp value f a chsen valve at fully pen ( ( Q 8 p = ( NOM VENTIL H00 = = 0,5 bar (5 kpa) Kvs 6 ( The cntrl valve's real pressure drp calculated this way shall be taken int accunt in a hydraulic calculatin f regulating circuit. MIN - Determinatin f valve s real authrity pvalveh00 a = = 5 = 0, p 80 Value a shuld be at least equal t 0,. A chsen valve checking is then satisfactry. Cautin: the valve's authrity calculatin shuld be related t a valve pressure difference in its clsed psitin i.e. dispsitin pressure value in a branch pavail. when flw rate is zer, nt t a pressure value f a pump p, because, due t pipeline PUMP circuit pressure drps up t the spt where the regulating branch is cnnected, the fllwing equatin applies: p < p. In such cases we cnsider fr simplicity the AVAIL. PUMP fllwing: p = p = p. Checking f rangeability We carry ut the same checking fr minimal flw rate - Q MIN =, m.h. The fllwing differential pressure values crrespnd t the min. flw rate: p PIPELINE QMIN=0, kpa, p =0,66 kpa. p = 80-0,4-0,66 = 78,94 = 79 kpa. APPLIANCE QMIN VALVEH0 AVAIL.H00 AVAIL.H0 DISP VALVE QMIN Kv MIN = Q MIN =, =,46 m.h pvalve QMIN 0,79 Necessary rangeability value r= Kvs = 6 = Kv MIN,46 - shall be lwer than mentined rangeability value f r = 50. Checking is then satisfactry. Selectin f suitable flw characteristic On the basis f calculated values KvNOMand Kv, it is pssible t MIN read the apprpriate strke values frm the graph fr individual types f flw characteristics f the valve and chse the mst suitable ne accrdingly. Here we have h NOM = 96% h MIN = 4% fr equal-percentage characteristic. In that case, LDM- spline flw characteristic is mre suitable (9% and 0% f the strke). It crrespnds t the fllwing specificatin cde : RV x XXX 4 S 6/0- Scheme f typical regulatin lp with the applicatin f tw-way cntrl valve PIPELINE PUMP APPLIANCE Remark: Mre detailed infrmatin n calculatin and design f LDM cntrl valves is mentined in calculatin instructins N Equatins mentiened abve apply in a simlified way t water. T reach ptimum results, we recmmend t use rginal calculatin prgramme VALVES which is available n request free f charge. -4-

5 Prcedure fr designing f three-way valve Given: medium water, 90 C, static pressure at piping spt 000 kpa(0 bar), p = kpa (0,4 bar), p =0 kpa PUMP PIPELINE (0,bar), p =0 kpa (0, bar), flw rate APPLIANCE - prùtk Q =7 m.h p = p + p + p p PUMP = p VALVE - p APPLIANCE - p PIPELINE = -0-0 = 0 kpa (0,bar) VALVE PUMP NOM APPLIANCE PIPELINE - Kv = QNOM = 7 =, m.h pvalve 0, Precautinary additins fr prcess tlerances (prvided that flw rate Q was nt versized): Kvs = (, t,). Kv = (, t,)., = 4, t 8,7 m.h Nw we chse the nearest Kvs value frm thse available in ur - catalgue, i.e. Kvs = 5 m.h. This value crrespnds t nminal size f DN. Then if we chse flanged executin PN 6, bdy made f spheridal cast irn, with metal - PTFE seat sealing, packing PTFE and equal-percentage flw characteristic, we will get the fllwing specificatin N.: RV x XXX 4 L 6/- x in the valve cde abve (x) stands fr valve executin (direct r reverse) and depends n type f used actuatr which shuld be chsen in respect t demands f regulating system (type, prducer, vltage, type f cntrl, necessary trque r linear frce, etc.) - Determinatin f real pressure drp value f a chsen valve at fully pen ( ( ( QNOM 7 p VALVE H00 = = = 0,08 bar (8 kpa) Kvs 5 ( The cntrl valve's real pressure drp calculated this way shall be taken int accunt in a hydraulic calculatin f regulating circuit. Cautin: T ensure reliable functin f three-way valves, the mst imprtant cnditin is t keep minimum available pressure difference between A and B prts. Three-way valves are capable t manage even high pressure difference between A and B prts but valve's flw characteristic defrmates then and s regulatin prperties deterirate. S if in dubt abut pressure difference value between thse tw prts (e.g. when three-way valve is piped directly int primary side withut pressure separatin), we recmmend t use a tw-way valve in cmbinatin with a primary-secndary side shrt cut t ensure a reliable regulatin. The authrity f A-AB way f three-way valve is, prviding a cnstant flw rate in appliance circuit, the fllwing: pvalve H00 a= = 8 =, p 8 VALVE H0 which means that the behaviur f flw in A-AB way crrespnds t ideal flw curve f the valve. In that case there are Kvs values in bth prts the same with linear characteristic i.e. the ttal flw is nearly cnstant. A cmbinatin f equal-percentage characteristic in A prt and linear characteristic in B prt shall be selected in thse cases when lading f A prt with differential pressure against B prt cannt be avided r when the primary side parametres are t high. Scheme f a typical regulatin lp with the applicatin f a three-way mixing cntrl valve PUMP APPLIANCE PIPELINE Remark: Mre detailed infrmatin n calculatin and design f LDM cntrl valves is mentined in calculatin instructins N Equatins mentiened abve apply in a simlified way t water. T reach ptimum results, we recmmend t use rginal calculatin prgramme VALVES which is available n request free f charge. -5-

6 RV 0 B RV 0 B Cntrl valves DN 5-50, PN 6 with Belim actuatrs Descriptin Cntrl valves series RV 0 are tw-way r three-way valves with internal threaded cnnectin. Valve bdy is made f brass. Cntrl valves series RV 0 are tw-way r three-way valves with flanged cnnectin. Valve bdy is made f grey cast irn. Valves are ptinally manufactured in the fllwing executins: - three-way cntrl valve - tw-way, reverse cntrl valve - tw-way, angular, cntrl valve Valves RV 0 B and RV 0 B are especially designed fr Belim actuatrs. Applicatin Valves are designed fr applicatin in heating, ventilatin r air cnditining systems fr maximal temperature 50 C. Maximal permissible wrking pressures accrding t ČSN 000, see page 8 f this catalgue. Prcess media Valve series RV 0 and RV 0 are designed t regulate the flw and pressure f liquids, gases and vapurs withut abrasive particles e.g. water, lw-pressure steam (it applies t RV 0 nly), air and ther media cmpatible with material f the valve inner parts. Medium acidity and alkalinity shuld nt exceed range f ph 4.5 t 9.5. T ensure reliable regulatin, prducer recmmends t pipe a strainer in frnt f the valve int pipeline. Installatin The valve is t be piped the way s that the directin f medium flw will cincide with the arrws n the bdy (inlet prts A,B and utlet prt AB). In flw-diverting valves, the prcess medium flw is reversed (inlet prtab and utlet prts A, B). Valve can be installed in any psitin except psitin when the actuatr is under the valve bdy. Technical data Series Type f valve Nminal size range Nminal pressure Bdy material Plug material Operating temperature range Face t face dimensins Cnnectin Type f plug Flw characteristic Kvs values Leakage rate Rangeability Packing RV 0 RV 0 Three-way cntrl valve Tw-way, reversed cntrl valve DN 5-50 PN 6 Brass 4 5 Grey cast irn EN-JL 0 Brass 0 t 50 C Sectin M4 Acc. t DIN 0 (4/98) Sectin acc. t ČSN-EN 558- (/997) Internal threaded cupling Acc. t ČSN-ISO 9- (9/00) V-prted plug Linear; equal-percentage 0.6 t m /hur Type B (raised-faced) Acc. t ČSN-EN 09- (4/00) Class III. acc. t ČSN-EN 49 (5/00) (<0.0 % Kvs) in way A-AB 50: O - ring EPDM -6-

7 Kvs values and differential pressures p max value is the valve maximal differential pressure when reliable pening and clsing can be guaranteed. Because f seat and plug service life, it is recmmended s that Fr further infrmatin n actuating, see actuatrs catalgue sheets DN Actuating (actuatr) Marking in valve specificatin N. Linear frce Kvs [m /hur] H Dimensins and weights fr the type RV 0 DN C L L L V V S H D m mm mm mm mm mm mm mm mm kg G / G / G G / G / G Dimensins and weights fr the type RV 0 DN D D D nxd a f L V V H mm mm mm mm mm mm mm mm mm mm x x permanent differential pressure wuld nt exceed 0.6 MPa fr valves RV 0 and 0.4 Mpa fr valves RV 0. D mm 8 NV4-, NV0-, NV4-MFT, NVF4-MFT, NVF4-MFT-E 800 N pmax MPa m kg Valve cmplete specificatin N. fr rdering. Type f valve. Series. Actuating ) Actuatrs with a fail-safe functin 4. Design 5. Bdy material 6. Flw characteristic 7. Nminal Kvs value 8. Nminal pressure PN 9. Max. perating temperature C 0. Nminal size Cntrl valve Valves made f brass Valves made f grey cast irn Electric actuatr NV4- Electric actuatr NV0- (4 V, -psitin cntrl) (0 V, -psitin cntrl) Electric actuatr NV4-MFT (4 V, Multi-functinal) ) Electric actuatr NVF4-MFT (4 V, Multi-functinal) ) Electric actuatr NVF4-MFT-E (4 V, Multi-functinal) Straight, tw-way, threaded valves Angle, tw-way, threaded valves Mixing (diverting), three-way, threaded valves Straight, tw-way, flanged valves Angle, tw-way, flanged valves Mixing (diverting), three-way, flanged valves Grey cast irn Brass Linear Equal-percentage ) Clumn N. acc. t Kvs values table PN 6 DN Applicable t RV 0 Applicable t RV 0 XX RV X X X 0 0 X X X E B K E B K E B K E B K E B K X X X X - X XX / 6 XXX - 50 XX XX Ordering example : Three-way cntrl valves DN 5, PN 6 with electric actuatr SQX.00, bdy material: brass, cnnectin: internal thread G, linear flw characteristic, Kvs = 0 m /hur is specified as fllws : RV 0 ELA 5 6/-5-7-

8 00 line RV/HUxB Cntrl valves and Fail-safe actin valves DN 5-65, PN 6 and with Belim actuatrs Descriptin Prcess media Cntrl valves RV, RV and RV (further in text RV x) are single-seated valves designed fr regulatin and shut-ff f prcess medium flw. In regard f used actuatrs, the valves are suitable fr regulatin at lwer differential pressures. Flw characteristics, Kvs values and leakage rates crrespnd t internatinal standards. Valves with a fail-safe actin series HU x B have the same design as RV x with additin f increased seat sealing. Valves are equipped with fail-safe actin actuatrs (valve clses r pens upn pwer failure). Valves RV x B are especially designed fr Belim actuatrs. Applicatin These valves have a wide range f applicatin in heating, ventilatin, pwer generatin and chemical prcessing industries. Valve bdy can be ptinally made f spheridal cast irn, cast steel and austenitic stainless steel accrding t perating cnditins. The materials selected crrespnd t recmmendatins stipulated by ÈSN-EN 50- (/00) (steels) and ÈSN-EN fr 50- (/00) (cast). The maximum perating pressures different materials are specified in the table n page 8 f this catalgue. Technical data -8- Valves series RV / HU x are designed fr regulatin (RV x) and fr regulatin and shut-ff (HU x)f flw and pressure f liquids, gases and vapurs withut abrasive particles e.g. Water, steam, air and ther media cmpatible with material f the valve inner parts. The applicatin f valves made f spheridal cast irn (RV ) fr steam is limited by the fllwing parametres: Steam must be superheated (its dryness x > = 0,98) and inlet pressure p 0,4 MPa when differential pressure is abve-critical r p,6 MPa when differential pressure is unde-critical. In case these values are exceeded, it is necessary t use valve made f cast steel (RV ).T ensure reliable regulatin, prducer recmmends t pipe a strainer in frnt f the valve r ensure in any ther way that medium will nt cntain abrasive particles r impurities. Installatin The valve is t be piped the way s that the directin f medium flw will cincide with the arrws n the bdy. The valve can be installed in any psitin except psitin when the actuatr is under the valve bdy. When medium temperature exceeds 50 C, it is necessary t prtect the actuatr against glwing heat frm the pipeline e.g. by the means f prper insulating f the pipeline and valve r by tilting the valve away frm the heat radiatin. Series RV/HU RV/HU RV/HU Type f valve Nminal size range Nminal pressure Tw-way, single-seated, reverse, cntrl valve DN 5 t 65 PN 6, PN Bdy material Spheridal cast irn Cast steel Stainless steel EN-JS (GPGH).458 (EN-GJS-0-0-LT).757 (G7CrM5-5) (GX5CrNiMNb9--) Seat material : DN / / / DIN W.Nr./ÈSN DN 65.7 / / / Plug material : DN / / / DIN W.Nr./ÈSN Operating temperature range -0 t 80 C -0 t 80 C -0 t 80 C Face t face dimensins Flanges Line acc. t ÈSN-EN 558- (/997) Acc. t ÈSN-EN 09- (4/00) Flange face Type B (raised-faced) r Type F (female) acc. t ÈSN-EN 09- (4/00) Type f plug V-prted, parablic, perfrated Flw characteristic Linear, equal-percentage, LDMspline, parablic Kvs value 0.4 t 6 m /hur Leakage rate Class III. acc. t ÈSN-EN 49 (5/00) (<0.% Kvs) fr c. valves with metal-metal seat sealing Class IV. acc. t ÈSN-EN 49 (5/00) (<0.0% Kvs) fr c. valves with metal-ptfe seat sealing Rangeability r 50: Packing O - ring EPDM t max= C, DRSpack (PTFE) t max=50 C, Bellws t max=80 C Remark: Fr lw perating temperatures (-00 t +80 C), it is pssible t supply the valve RV / HU with bdy material made f.8 (cast stainless steel) > = > =

9 Kvs values and differential pressures pmaxvalue is the valve max. differential pressure when pen- -clse functin is always guaranteed. In regard f service life f seat and plug, it is recmmended s that permanent differential pressure wuld nt exceed.6 MPa. Otherwise it is suitable t use perfrated plug r sealing surfaces f seat and plug with a hard metal verlay. Fr further infrmatin n Actuating (actuatr) NV4-, NV0-, NV4-MFT, NVF4-MFT, NVF4-MFT-E actuating, see actuatrs Marking in valve spec. N. catalgue sheets Linear frce 800 N Kvs [m /hur] pmax DN H metal PTFE 5 ).5 ).6 ).0 ) 0.6 ) ) ) ) ) ) ) ) ) ) ) ) 6. ) ) 4.0. ) ) parablic plug ) V-prted plug with linear characteristic, parablic plug with equal-percentage, LDMspline and parablic characteristic. Perfrated plug available nly with Kvs values in shadwed frames with the fllwing restrictins: - Kvs values.5 t.0 m /hur available with linear characteristic nly. - Perfrated plug with Kvs value acc. t clumn N. available with linear r parablic characteristic nly. metal - versin with metal - metal seat sealing PTFE - versin with metal - PTFE seat sealing Bellws packing can be used with V-prted plug nly. Equal-percentage, LDMspline and parablic characteristic available n cnditin : Kvs value =.0 Max. differential pressure p fr valves PN 6 must be.6 MPa. Max. differential pressures specified in table apply t PTFE and O-ring packing. pmax fr bellws must be cnsulted with the prducer. Dimensins and weights fr the type RV x PN 6 PN PN 6, PN # # # DN D D D d n D D D d n D f D4 D5 L V V V V V a m m mv mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm kg kg kg ) ) with regard f the standard previusly in frce, there is an ptin t have the number f cnnectin blts as stipulated in ÈSN-EN 09- #) - fr valve with bellws packing mv - weight t be added t weight f valve equipped with bellws packing m - fr valves RV / HU m - fr valves RV / HU and RV / HU -9-

10 00 line RV/HUxB Cntrl valves and Fail-safe actin valves DN 5-65, PN 6 and with Belim actuatrs Descriptin Prcess media Cntrl valves RV, RV and RV (further in text RV x) are single-seated valves with pressure-balanced plug designed fr regulatin and shut-ff f prcess medium flw. Its design enables the valve t be applicable t regulatin at high differential pressures with lw-linear-frce actuatrs. Flw characteristics, Kvs values and leakage rates crrespnd t internatinal standards. Valves with a fail-safe actin series HU x B have the same design as RV x with additin f increased seat sealing. Valves are equipped with fail-safe actin actuatrs (valve clses r pens upn pwer failure). Valves RV x B are especially designed fr Belim actuatrs. Applicatin These valves have a wide range f applicatin in heating, ventilatin, pwer generatin and chemical prcessing industries. Valve bdy can be ptinally made f spheridal cast irn, cast steel and austenitic stainless steel accrding t perating cnditins. The materials selected crrespnd t recmmendatins stipulated by ÈSN-EN 50- (/00) (steels) and ÈSN-EN 50- (/00) (cast). The maximum perating pressures fr different materials are specified in the table n page 8 f this catalgue. Technical data Series Type f valve Nminal size range Nminal pressure Bdy material -0- Valves series RV x are designed fr regulatin f flw and pressure f liquids, gases and vapurs withut abrasive particles e.g. Water, steam, air and ther media cmpatible with material f the valve inner parts. The applicatin f valves made f spheridal cast irn (RV ) fr steam is limited by the fllwing parametres: Steam must be superheated (its dryness x > 0,98) and inlet pressure p 0,4 Mpa when = differential pressure is abve-critical r p,6 MPa when differential pressure is unde-critical. In case these values are exceeded, it is necessary t use valve made f cast steel (RV ). T ensure reliable regulatin, prducer recmmends t pipe a strainer in frnt f the valve r ensure in any ther way that medium will nt cntain abrasive particles r impurities. Installatin The valve is t be piped the way s that the directin f medium flw will cincide with the arrws n the bdy. The valve can be installed in any psitin except psitin when the actuatr is under the valve bdy. When medium temperature exceeds 50 C, it is necessary t prtect the actuatr against glwing heat frm the pipeline; e.g. by the means f prper insulating f the pipeline and valve r by tilting the valve away frm the heat radiatin. RV/HU RV/HU RV/HU Tw-way, single-seated cntrl valve with pressure-balanced plug DN 5 t 65 PN 6, PN Spheridal cast irn Cast steel Stainless steel EN-JS (GPGH).458 (EN-GJS-0-0-LT).757 (G7CrM5-5) (GX5CrNiMNb9--) Seat material : DN / / / DIN W.Nr./ÈSN DN 65.7 / / / Plug material : DN / / / DIN W.Nr./ÈSN Operating temperature range -0 t 80 C -0 t 80 C -0 t 80 C Face t face dimensins Flanges Line acc. t ÈSN-EN 558- (/997) Acc. t ÈSN-EN 09- (4/00) Flange face Type B (raised-faced) r Type F (female) acc. t ÈSN-EN 09- (4/00) Type f plug V-prted, parablic, perfrated Flw characteristic Linear, equal-percentage, LDMspline, parablic Kvs value.6 t 6 m /hur Leakage rate Class III. acc. t ÈSN-EN 49 (5/00) (<0.% Kvs) fr c. valves with metal-metal seat sealing Class IV. acc. t ÈSN-EN 49 (5/00) (<0.0% Kvs) fr c. valves with metal-ptfe seat sealing Rangeability r 50: Packing O - ring EPDM t max=50 C, DRSpack (PTFE) t max=50 C, Bellws t max=80 C Remark: Fr lw perating temperatures (-00 t +80 C), it is pssible t supply the valve RV / HU with bdy material made f.8 (cast stainless steel) = > = >

11 Kvs values and differential pressures pmaxvalue is the valve max. differential pressure when pen- -clse functin is always guaranteed. In regard f service life f seat and plug, it is recmmended s that permanent differential pressure wuld nt exceed.6 MPa. Otherwise it is suitable t use perfrated plug r sealing surfaces f seat and plug with a hard metal verlay. Fr further infrmatin n Actuating (actuatr) NV4-, NV0-, NV4-MFT, NVF4-MFT, NVF4-MFT-E actuating, see actuatrs Marking in valve spec. N. catalgue sheets Linear frce 800 N Kvs [m /hur] pmax DN H metal PTFE ) ) (.60).60 (.60) ) (.60).60 (.60) (.60).60 (.60) (0.94) (0.5) (.60) (.60) ) linear characteristic nly Max. differential pressures specified in table apply t PTFE and Perfrated plug available nly with Kvs values in shadwed O-ring packing. p fr bellws must be cnsulted with the max frames with the fllwing restrictins: prducer. - Perfrated plug with Kvs value acc. t clumn N. available with linear r parablic characteristic nly. Max. differential pressure p fr valves PN 6 must be.6 MPa. metal - versin with metal - metal seat sealing PTFE - versin with metal - PTFE seat sealing (xx) - p max values specified in parentheses apply t perfrated plug Dimensins and weights fr the type RV x PN 6 PN PN 6, PN # # # DN D D D d n D D D d n D f D4 D5 L V V V V V a m m mv mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm kg kg kg ) ) with regard f the standard previusly in frce, there is an ptin t have the number f cnnectin blts as stipulated in ÈSN-EN 09- #) - fr valve with bellws packing mv - weight t be added t weight f valve equipped with bellws packing m - fr valves RV / HU m - fr valves RV / HU and RV / HU --

12 00 line RV x5 B Cntrl valves DN 5-65, PN 6 and with Belim actuatrs Descriptin Prcess media Cntrl valves RV 5, RV 5 and RV 5 (further nly RV x5) are three-way valves with mixing r flw-diverting functin. In regard f used actuatrs, the valves are suitable fr regulatin at lwer differential pressures. Flw characteristics, Kvs values and leakage rates crrespnd t internatinal standards. When assembled with a fail-safe actin actuatr, it clses straight way upn pwer failure. Valves RV x5 B are especially designed fr Belim actuatrs. Applicatin These valves have a wide range f applicatin in heating, ventilatin, pwer generatin and chemical prcessing industries. Valve bdy can be ptinally made f spheridal cast irn, cast steel and austenitic stainless steel accrding t perating cnditins. The materials selected crrespnd t recmmendatins stipulated by ÈSN-EN 50- (/00) (steels) and ÈSN-EN 50- (/00) (cast). The maximum perating pressures fr different materials are specified in the table n page 8 f this catalgue. Technical data -- Valves series RV x5 are designed fr regulatin f flw and pressure f liquids, gases and vapurs withut abrasive particles e.g. water, steam, air and ther media cmpatible with material f the valve inner parts. The applicatin f valves made f spheridal cast irn (RV 5) fr steam is limited by the fllwing parametres: Steam must be superheated (its dryness x > 0,98) and inlet pressure p 0,4 MPa when = differential pressure is abve-critical r p,6 MPa when differential pressure is under-critical. In case these values are exceeded, it is necessary t use valve made f cast steel (RV 5). T ensure reliable regulatin, prducer recmmends t pipe a strainer in frnt f the valve r ensure in any ther way that medium will nt cntain abrasive particles r impurities. Installatin When the valve is used as mixing, it must be piped the way s that directin f prcess medium flw will cincide with the arrws n the bdy (inlet prts A, B and utlet prt AB). When the valves is used as diverting, prcess medium flws thrugh cmmn valve prt AB and split streams leave thrugh valve prts A and B.). The valve can be installed in any psitin except psitin when the actuatr is under the valve bdy. When medium temperature exceeds 50 C, it is necessary t prtect the actuatr against glwing heat frm the pipeline; e.g. by the means f prper insulating f the pipeline and valve r by tilting the valve away frm the heat radiatin. Series RV/HU5 RV/HU5 RV/HU5 Type f valve Nminal size range Nminal pressure Bdy material Spheridal cast irn Three-way reversed cntrl valve DN 5 t 65 PN 6, PN Cast steel Stainless steel EN-JS (GPGH).458 (EN-GJS-0-0-LT).757 (G7CrM5-5) (GX5CrNiMNb9--) Seat material : DN / / / DIN W.Nr./ÈSN DN 65.7 / / / Plug material : DN / / / DIN W.Nr./ÈSN Operating temperature range -0 t 80 C -0 t 80 C -0 t 80 C Face t face dimensins Flanges Line acc. t ÈSN-EN 558- (/997) Acc. t ÈSN-EN 09- (4/00) Flange face Type B (raised-faced) r Type F (female) acc. t ÈSN-EN 09- (4/00) Type f plug Flw characteristic V-prted, parablic, perfrated Linear, equal-percentage in AB -Bway Kvs value.6 t 6 m /hur Leakage rate Class III. acc. t ÈSN-EN 49 (5/00) (<0.% Kvs) fr c. valves with metal-metal seat sealing Class IV. acc. t ÈSN-EN 49 (5/00) (<0.0% Kvs) fr c. valves with metal-ptfe seat sealing Rangeability r 50: Packing O - ring EPDM t max=50 C, DRSpack (PTFE) t max=50 C, Bellws t max=80 C Remark: Fr lw perating temperatures (-00 t +80 C), it is pssible t supply the valve RV / HU with bdy material made f.8 (cast stainless steel) > = > =

13 Kvs values and differential pressures pmaxvalue is the valve max. differential pressure when pen- -clse functin is always guaranteed. In regard f service life f seat and plug, it is recmmended s that permanent differential pressure wuld nt exceed.6 MPa. Otherwise it is suitable t use perfrated plug r sealing surfaces f seat and plug with a hard metal verlay. DN Actuating (actuatr) NV4-, NV0-, NV4-MFT, NVF4-MFT, NVF4-MFT-E Marking in valve spec. N. Linear frce 800 N Kvs [m /hur] pmax H metal PTFE ).5 ) ) 4.0. ) ) ) ) ) ) Fr further infrmatin n actuating, see actuatrs catalgue sheets ) parablic plug in straight way, V-prted plug in angle way ) V-prted plug in angle way, in straight way fr linear characteristic V-prted plug and fr equal-percentage characteristic parablic plug. metal - versin with metal - metal seat sealing PTFE - versin with metal - PTFE seat sealing Max. differential pressures specified in table apply t PTFE and O-ring packing. p fr bellws must be cnsulted with the max prducer. Bellws packing can be used with V-prted plug nly. Max. differential pressure p fr valves PN 6 must be.6 MPa. Dimensins and weights fr the type RV x5 PN 6 PN PN 6, PN # # # DN D D D d n D D D d n D f D4 D5 L V V V V V a m m mv mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm kg kg kg ) ) with regard f the standard previusly in frce, there is an ptin t have the number f cnnectin blts as stipulated in ÈSN-EN 09- #) - fr valve with bellws packing m - weight t be added t weight f valve equipped with v bellws packing m - fr valves RV 5 m - fr valves RV 5 and RV 5 --

14 Valve cmplete specificatin N. fr rdering RV / HU x, RV x, RV x5 XX XXX XXX XXXX. Valve Cntrl valve RV Fail-safe actin valve HU. Series Valves made f sph. cast irn EN-JS 05 Valves made f cast steel.069,.757 Valves made f stainless steel.458 Reverse valve Pressure-balanced, reverse valve Mixing (diverting), reverse valve 5. Actuating Electric actuatr E ) Actuatrs with a fail-safe NV4- (4 V, -psitin) functin NV0- (0 V, -psitin) NV4-MFT (4 V, Multi-functinal) ) NVF4-MFT (4 V, Multi-functinal) ) NVF4-MFT-E (4 V, Multi-functinal) 4. Cnnectin Raised flange Female flange 5. Bdy material Cast steel.069 (-0 t 0 C) Sphr. cast irn EN-JS 05 (-0 t 00 C) CrM steel.757 (-0 t 500 C) (Operating temperature ranges Stained steel.458 (-0 t 0 C) are specified in parentheses) Other material n request 9 6. Seat sealing Metal - metal ) ) frm DN 5; t max = 60 C Sft sealing (metal - PTFE) in straight way Hard metal verlay n sealing surfaces 7. Packing O - ring EPDM 8. Flw characteristic DRSpack (PTFE) Bellws Bellws with safety PTFE packing Linear 7 8 4) Nt applicable t RV x5 Equal-percentage in straight way 4) LDMspline 4) Parablic 4) Linear - perfrated plug 4) Equal-percentage - perfrated plug 4) Parablic - perfrated plug 9. Kvs Clumn N. acc. t Kvs values table 0. Nminal pressure PN PN 6. Max. perating temp. C PN O - ring EPDM 5) Nt applicable t RV / HU x DRSpack (PTFE) Bellws. Nminal size DN DN Ordering example: XX - XX / XXX - XXX Tw-way cntrl valve DN 65, PN, with electric actuatr NV0-, bdy material: spheridal cast irn, flange with raised face, metal-metal seat sealing, PTFE packing, linear characteristic, Kvs = 6 m /hur is specified as fllws: RV 4 L /50-65 L R S P D Q Z X XXX -4-

15 Valves RV / HU x Sectin f valve with V-prted plug Sectin f valve with perfrated plug Valves RV / HU x Sectin f pressure-balanced valve with V-prted plug Sectin f pressure-balanced valve with perfrated plug Valves RV x5 Sectin f three-way valve with V-prted plug -5-

16 Electric actuatrs NV... Belim Technical data Type Marking in valve specificatin N. Vltage Frequency Mtr pwer Cntrl Running time Fail-safe mde Fail-safe functin Nminal frce Travel Enclsure Prcess medium max. temperature Ambient temperature range Ambient humidity limit Weight NV4- NV0- NV4-MFT NVF4-MFT NVF4-MFT-E AC/DC 4 V AC 0 V AC/DC 4 V Hz W 5W 5,5 W - psitin 0-0 V ( - psitin, ON - OFF) 50 s (90 s) 50 s (95 t000 s) 0 s indirect direct 800 N t0mm IP C (with bellws 80 C) 0t50C %,5 kg Direct and indirect functin f actuatr Direct functin ensures that actuatr stem extends (the valve pens) upn pwer supply failure. Indirect functin ensures that actuatr stem retracts (the valve clses) upn pwer supply failure. Multi-functinal technlgy MFT Due t a built-in micrprcessr, sme f the actuatr s parameters can be set by the user, e.g.: type f cntrl signal, running time, tripping trque value, etc. The cnfiguratin is carried ut with PC r a special prgramming device. Dimensins f actuatr -6-

17 Wiring diagrams f actuatrs NV4- and NV0- Cnnectin via separating transfrmer NV4-MFT Cnnectin via separating transfrmer Cntrl signal frm regulatr Measuring vltage U fr temperature indicatr NVF4-MFT and NVF4-MFT-E Cnnectin via separating transfrmer Cntrl signal frm regulatr Measuring vltage U fr temperature indicatr -7-

18 Maximal permissible perating pressures [MPa] Material PN Temperature [ C ] Brass 4 5 Grey cast irn EN-JL 0 (EN-GJL-50) Spher.cast irn EN-JS 05 (EN-GJS-0-8-LT) Cast steel.069 (GPGH) Chrmmlybden steel.757 (G7CrM5-5) Stainless steel ,60,60,50 4,00,60 4,00 4,00,60,4,44,,88,50 4,00 4,00,50,,60,,90 4,00,,0,48,0,60 4,00,0,0,0,0,0 4,00,0,00,70 4,00,0 0,80,90,90,0,0,80 (GX5CrNiMNb9--) 4,00,80,50,,0,0, Ntes: -8-

19 LDM, spl. s r.. Litmyšlská Česká Třebvá Czech Republic LDM, spl. s r.. Bür Prague Tiskařská Praha 0 - Malešice Czech Republic LDM, spl. s r.. Bür Ústí nad Labem Mezní 4 0 Ústí nad Labem Czech Republic LDM servis, spl. s r.. Litmyšlská Česká Třebvá Czech Republic tel.: fax: sale@ldm.cz tel.: fax: tel.: fax: tel.: fax: servis@ldm.cz LDM, Plska Sp. z.. Mdelarska 4 Katwice Pland tel.: fax: mbile: ldmplska@ ldm.cz LDM Bratislava s.r.. Miervá Bratislava Slvakia tel.: fax: ldm@ldm.sk http: // LDM - Bulgaria - OOD z. k. Mladst bl. 4, flr, app Sfia Bulgaria tel.: fax: GSM: ldm.bg@mbx.cit.bg OAO LDM Chernyakhvskg str., build Mskau Russian Federatin tel.: fax: infrus@ ldmvalves.cm LDM Armaturen GmbH Wupperweg D-5789 Lindlar Germany tel.: fax: mbile: ldmarmaturen@ldmvalves.cm http: // Yur partner LDM reserves the right t mdify r imprve the designs r specificatins f such prducts at any time withut ntice. -9 -