Direct operated pressure relief valve type DBD

Transcription

1 Direct perated pressure relief type DBD NS,, up t Ma up t 50 dm /min WK ALICAION ressure relief s are designed t limit maximum pressure in the entire hydraulic system r in its part. Depending n the type f munting in the system, direct perated pressure relief s type DBD can be screwed (cartridge versin), munted int threaded cnnectins (versin fr threaded cnnectin) r munted t subplate (versin fr subplate munting). DESCRIION OF OERAION DBDSK/0 5 7 DBDAK/ 8 he pressure relief type DBD mainly cnsists f bdy with seat (), spring (), pressure setting with adjustment element hexagn scket set screw (), rtary knb r lckable rtary knb (), wrking element pppet (5) fr all versins up t Ma r ball () nly fr s NS in versin up t Ma. Cracking pressure setting is made by variatin f spring tensin by means f pressure setting () r (). Varius springs () (exchangeable) crrespnd t varius ranges f cracking pressure adjustment. A dumping element (7) r (8) is used t eliminate vibratins f the. ype DBD - - WK 50 0.

2 ECHNICAL DAA Hydraulic fluid mineral il Nminal fluid viscsity 7 mm /s at temperature 55 C Viscsity range Fluid temperature range (in a tank) Ambient temperature range Maxim imum perat ating pressure Maxim imum pressure in prt Required filtr f ltrat atin Recmmended filtratin,8 up t 80 mm /s recmmended C up t 55 C max - C up t +70 C - C up t +70 C NS NS NS Ma Ma Ma,,5 Ma up t t µm up t µm OVERALL AND CONNECION DIMENSIONS versins fr cartridge munting: DBD...K...; K...; K... S S S S O,5 OD L 7 5 OD S S S OD L (strke) L S S OD Md L5 L L (strke) L7 - Adjustment type S (hexagn scket set screw) - Adjustment type H (rtary knb) - Adjustment type A (lckable rtary knb) - Seal ring -r -ring - dimensins accrding t a belw table 5 - Seal ring - dimensins accrding t a belw table - Distance fr remving a key frm the lck f adjustment A 7 - Cding fr a versin WK ype DBD

3 OVERALL AND CONNECION DIMENSIONS versins fr cartridge munting: DBD...K...; K...; K... ve versin DBD... K... DBD K... DBD K... -r -ring ps. p 9, x - pcs/kit x - pcs/kit x - pcs/kit ring ps. p 5 7, x x,5 - pcs/kit,7 x x - pcs/kit x 9 x - pcs/kit φd 8 8 φd L L L 95,5 9,5 87 L ve versin DBD... K... DBD K... DBD K... L5 L L7 8,5 8,5 S S S S S φd M8 x,5 M5 x,5 M5 x,5 Md [Nm] weig ight [kg] 0, 0,5 cnnectin dimensins fr cavity versins: DBD...K...; K...; K... 90v OD ODH9 a 0,05 A α A,5 L7 OD OD a 0, A OD5 L L L L L5 OD 0,5-5v,5 L8 - Optinal lcatin f prt (n circuit φ D) - Optinal lcatin f prt (n circuit φ D5) nm minal size f ve cavityc ( versin) NS (DBD...K...) NS (DBD...K...) NS (DBD...K...) φd φd φd φd φd5 φd M8 x,5 M5 x,5 M5 x, ,5,9,9 9,9 L 5 8 L 9 7 L 5 5 L 5 5 L L7 5,5 ± 5 7,5 ± 7 9,5 ± 8 L α 5 5 ype DBD - - WK 50 0.

4 OVERALL AND CONNECION DIMENSIONS versins fr subplate munting: DBD...;...;... S S S S O,5 OD () H L S S S 5 L L OD L L (strke) L S L (strke) L7 S () B B OD L5 - Adjustment type S (hexagn scket set screw) - Adjustment type H (rtary knb) - Adjustment type A (lckable rtary knb) - lug fr additinal prt (cnnectin fr pressure gauge) - dimensins accrding t belw table 5 - Seal ring -rin -ring - dimensins accrding t a belw table - Distance fr remving a key frm the lck f adjustment A OD - hles L L ve versin DBD DBD DBD r -ring ps. p 5 B B φd φd φd H L L L L 7 x,5 - pcs/kit 5, x, - pcs/kit 80, 7 95, ,5 x - pcs/kit L5 ve versin DBD DBD DBD L L7 L L L L S S S S S 8 8,5, ,5 0 9 prt () G/ G/ G weig ight [kg],,7 7 WK ype DBD

5 OVERALL AND CONNECION DIMENSIONS subplates type G0/0; G/0; G/0 fr versins: DBD...;...;... OD - hles (, ) r 0,0/0 mm 0, 5 H OD - hles OD - depth hles L R L5 L L R OD - - hles OD5 - - depth hles OD - hles B B L L7 L8 L9 L50 L L - Munting face f - Recess in subplate (bard) fr cupling fittings fr threaded pipes - Hles fr blts munting the munting blts - pcs/kit must be rdered separately, dimensins and tightening trques accrding t belw table - hreaded pipe cnnectins 5 - Admissible surface rughness and flatness deviatin fr a subplate face Nm minal size ( versin) NS (DBD...) NS (DBD...) NS (DBD...) subp ubplate G0/0 G/0 G/0 B 5 70 B φd φd φd 5 G/ 80 G/ 0 7 G φd 7 7,5 φd5 7,5 φd M M8 M8 H 5 5 L L 8 5 L L 9 5 7,5 Nm minal size ( versin) NS (DBD...) NS (DBD...) NS (DBD...) subp ubplate G0/0 G/0 G/0 L L L7 L8 L9 L50,5 9,5 8,5 5 7, , R 5 weig ight [kg],5 5,5 Nm minal size ( versin) subp ubplate blt lts s munti m ting ve (must be rdered separately) tighten tening ng trt rque Md [Nm] NS (DBD...) NS (DBD...) NS (DBD...) G0/0 G/0 G/0 M x 50 -, 0,9 accrding t N -EN ISO 7 - pcs/kit M8 x 70 -, 0,9 accrding t N -EN ISO 7 - pcs/kit M8 x 90 -, 0,9 accrding t N -EN ISO 7 - pcs/kit 5 5 ype DBD WK 50 0.

6 OVERALL AND CONNECION DIMENSIONS versins fr threaded cnnectins: DBD...G...; G...; G...; S S S S OD - - hleso,5 OD () H H L L L B S S S OD OD L (strke) L S S - Adjustment type S (hexagn scket set screw) - Adjustment type H (rtary knb) - Adjustment type A (lckable rtary knb) - lug fr additinal prt (cnnectin fr pressure gauge) - dimensins accrding t belw table 5 - Distance fr remving a key frm the lck f adjustment A 5 L5 L L (strke) L7 L5 OD depth hles OD hles (, ) () B B L L L OD - hles ve versin B B φd φd φd φd φd φd H H L L L L L5 L L7 DBD... G... 5 G/ 5, M ,5 8,5 DBD G G/ 9 M8 8 9,5 8,5 DBD G G 7 9 M ve versin DBD... G... L 80 L L 5 L 55 L5 L S S S S S 9 prt () G/ weig ight, [kg] DBD G G/,7 DBD G , G 7 WK ype DBD

7 SCHEMES Graphical symbl f the type DBD... ERFORMANCE CURVES measured at viscsity ν = mm /s and temperature t = 50 C Char arakteris teristics tics fr wr rking pressure dur d uring flwf Nm mina inal size Nminal size 50 p [Ma Ma] p [Ma Ma] 0 5 Q [dm /min] Q [dm /min] Nminal size p [Ma Ma] Q [dm /min] 50 ype DBD WK 50 0.

8 HOW O ORDER DBD Adjustment element set screw = S rtary knb = H lckable rtary knb = A * Nminal size (NS) NS = NS = NS = ype f cnnectin cartridge munting = K fr threaded cnnectin = G fr subplate munting = Series number (-9) - cnnectin and installatin dimensins unchanged = X series = ressure setting up t,5 Ma = 5 up t 5 Ma = 50 up t Ma = 0 up t Ma = 0 up t,5 Ma = 5 up t Ma = 0 up t Ma (available nly fr s NS) = Sealing NBR (fr fluids n mineral il base) FM (fr fluids n phsphate ester base) = n designatin = V Further requirements in clear text (t be agreed with the manufacturer) NOES: he shuld be rdered accrding t the abve cding. he symbls in bld are preferred versins in shrt delivery time. Cding example: DBD S K /0 WK ype DBD

9 Valves type DBDS as safety s DBDS.../...C and DBDS.../...C with CE certificatin in accrdance with: pressure cmpnent directive 97//EC directive 00/9/EC (relating t carriage) ALICAION Safety s type DBDS / C are used as an end device prtecting against excessive pressure in prtected system (mstly in hydraulic accumulatr). DESCRIION OF OERAION Safety s type DBDS / C cnsist f an adjustment set and plumbed at required pressure. he maximum pressure is maintained in prtected system by the. When the pressure exceeds the maximum then excessive fluid is drained. Depending n munting methd, safety s type DBDS / C can be prduced in the fllwing versins: fr cartridge munting versin DBDS K/ C fr subplate cnnectin versin DBDS / C fr threaded cnnectin versin DBDS G/ C ERFORMANCE CURVES measured at viscsity ν = mm /s and temperature t = 50 C erfrmance characteristics p-q fr s NS (max discharge capacity f the fr varius pressures f adjustment peratin area f the must be within the white area f the diagram) versin DBDS....../.. /...C p [Ma Ma] 5,0,5 erfrmance rmance characteristics ics nt t achie ieve ved by the t ve Q [dm /min] ype DBD WK 50 0.

10 ERFORMANCE CURVES measured at viscsity ν = mm /s and temperature t = 50 C erfrmance characteristics p-q fr s NS (max discharge capacity f the fr varius pressures f adjustment peratin area f the must be within the white area f the diagram) versin DBDS....../.. /...C 8 p [Ma Ma] 9 7 5,5 erfrmance rmance characteristics ics nt t achie ieve ved by the t ve Q [dm /min] WK ype DBD

11 HOW O ORDER DBD S C Adjustment element set screw = S (adjustment element set and plumbed at required pressure) Nminal size (NS) NS = NS = ype f cnnectin cartridge munting = K fr threaded cnnectin = G fr subplate munting = Series number (-9) - cnnectin and installatin dimensins unchanged = X series = ressure setting required cracking pressure f the shuld be specified Sealing NBR (fr fluids n mineral il base) FM (fr fluids n phsphate ester base) = n designatin = V NOES: he shuld be rdered accrding t the abve cding. Safety s type DBDS / C are designed fr hydraulic fluid in the frm f mineral il type HL + HL (50% / 50%) i.e. fr fluid in grup in accrdance with article 9 pint. f the directive 97//EC. Drain hse may nt be charged under pressure (free fluid drain t the tank). Cding example: DBD S K / C ype DBD - - WK 50 0.

12 Valves type DBD as safety s with unlading DBDS(H) / C and DBDS(H) / C with CE certificatin in accrdance with pressure directive 97//EC ALICAION Safety s type DBDS(H H) / C are used as an end device prtecting against excessive pressure in prtected system (mstly in hydraulic accumulatr). DESCRIION OF OERAION Safety s type DBDS(H H) / C cnsist f an adjustment set and plumbed at required pressure which additinally allws t unlad entirely the system (mstly f hydraulic accumulatr). It is impssible t increase set pressure. he pressure can be, hwever, decreased withut damaging plumb. Depending n adjustment methd, safety s type.can be prduced in the fllwing versins: with set screw versin DBDS S / C r with rtary knb versin DBDH H / C. he s can als have the fllwing type f cnnectin: fr cartridge munting versin DBDS(H) K / C fr subplate munting versin DBDS(H) / C fr threaded cnnectins versin DBDS(H) G / C ERFORMANCE CURVES measured at viscsity ν = mm /s and temperature t = 50 C erfrmance characteristics p-q fr s NS (max discharge capacity f the fr varius pressures f adjustment peratin area f the must be within the white area f the diagram) versins: DBDS....../.. /...C DBDH.../...C p [Ma Ma] 5,0,5 erfrmance rmance characteris tics nt t achie ieve ved by the t ve Q [dm /min] WK ype DBD

13 ERFORMANCE CURVES measured at viscsity ν = mm /s and temperature t = 50 C erfrmance characteristics p-q fr s NS (max discharge capacity f the fr varius pressures f adjustment peratin area f the must be within the white area f the diagram) versins: DBDS....../.. /...C DBDH.../...C 8 p [Ma Ma] 9 7 5,5 erfrmance rmance characteris tics nt t achie ieve ved by the t ve Q [dm /min] ype DBD - - WK 50 0.

14 HOW O ORDER DBD C Adjustment element set screw = S rtary knb = H Nminal size (NS) NS = NS = ype f cnnectin cartridge munting = K fr threaded cnnectin = G fr subplate munting = Series number (-9) - cnnectin and installatin dimensins unchanged = X series = ressure setting required cracking pressure f the shuld be specified Sealing NBR (fr fluids n mineral il base) FM (fr fluids n phsphate ester base) = n designatin = V NOES: he shuld be rdered accrding t the abve cding. Safety s type DBDS (H H) / C are designed fr hydraulic fluid in the frm f mineral il type HL + HL (50% / 50%) i.e. fr fluid in grup in accrdance with article a 9 pint. f the directive 97//EC. Drain hse may nt be charged under pressure (free fluid drain t the tank). Cding example: DBD S K / C ONAR Wadwice S.A. ul. Wjska lskieg 9-0 Wadwice tel fax WK ype DBD