9. REV. Type M - SON - SO - MS Aircaps Tank venting and water excluding aircaps. For installation on service tank air pipes. Inerted void spaces and ballast tanks In order to maintain inert gas pressure and avoid water entering, a combined aircap and pressure/vacuum valve is available, type M. Please refer to its separate specification. Each type of aircap is tested and approved in accordance with classification society requirements. All types can be fitted with finemeshed wire gauze easily removable for cleaning, inspection or renewal, yet fully protected behind a cover. In some cases, a wire gauze is required for tanks where anodes for cathodic protection are installed. Rules differ on this issue. Please consult in each case. All Pres-Vac aircaps are made in solid castings for greater lifetime and feature compact dimensions, actually the smallest overall sizes available. For sizing, please refer to class requirements and request pressure resistance curves based on water. Type M Type MC Type SO Type SOC M end-of-line installation SON inverted in-line installation SO inverted end-of-line installation MS through side wall installation Type SON Type MS Features of type M - SON - SO - MS - MC - SOC: in stainless steel of polyethylene (available in heavy duty execution) of neoprene (other materials available) Easy maintenance No class requirements for spare parts on board Small outside dimensions Solid one piece castings for maximum lifetime Options: See specification NOTE When ballast hold is emptied by gravity fall, other sizing aspects must be considered. NOTE Request specific drawing for mud handling version, type MM. P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9.B Tank venting and water excluding aircaps Specifications Type: Dimensions: Capacities: Pressure drop: Materials: M - SON - SO - MS (MC - MP - SOC) See specific drawing Type: M, Type: MC, Type: SO, Type: SOC, Type: SON, Type: MS, See certified curves See certified curves, bronze, aluminium, stainless steel Options: Type MC and SOC are closable (gastight). Type MP features a rigid construction enabling semisubmergible operation on rigs. Type SON is available in a high capacity execution suitable for offshore installation in ballast systems. Certification New test regulations require pressure drop in case of overfilling to be established and tight closing when inclined 0º. Capacity curves available upon request. Pres-Vac aircaps are tested and approved to latest IACS standards, including requirements for Dutch flag vessels. Type M Type MC Type SO Type SOC Item Description Guide pin for float Item 8 9 0 Description Guide pin for float Spindle Hand wheel Locking device Item Description Body Screen-ring Ball Ball base ring Item 8 Description Body Screen-ring Ball Ball base Cover ring ring Type SON Item Description, lower part Ball Ball base ring Type MS Item 8 Description Guide pin Welding flange Pipe, supp. by yard Available with any connection and in any material requested. Please ask for detail drawing and performance data sheets for any specific model and type. NOTE Request futher information on type MM for mud handling P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. drwg. no.: - 800 HHR - Type M Water excluding aircap, flange connection Other standards available Item Description Spec. Guide pin for float 00 80 9 0 x 00 00 00 x 0 0 0 0 0 9 0 x 8 00 0 0 00 0 9 8x 80 0 9 0 8x 0 0 0 0 0 8 0 8x 80 0 90 00 0 0 8x8 00 8 9 0 80 0 80 8x8 80 8 0 00 0 x8 / 0 0 90 8 x8 0 0 0 9 0 x8 d d A B C H h t P-mm Holes inch mm mm mm mm mm mm mm drilling Available in other materials and in flange connection. USSR Register of Shipping Nippon Kaiji Kyokai R.I.N.A. DOT. When mounted on ballast tank, no flame screen required. When using gravity discharge, please consult us for sizing P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. drwg. no.: -- 800 HHR - Type M Water excluding aircap, female thread connection Available in other materials and in flange connection. Item Description Spec. Guide pin for float 0 8 BSP 80 90 00 0 9 BSP 00 8 BSP 80 80 9 8 BSP / 0 0 0 / BSP 0 0 0 0 0 BSP DN DN A B C H K T G inch mm mm mm mm mm mm mm USSR Register of Shipping Nippon Kaiji Kyokai R.I.N.A. DOT Other standards available. For fuel oil tanks and ballast tanks with cathodic protection flame screen is required.. When using gravity discharge, or owerfilling, please consult us for sizing. P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. drwg. no.: - 80 HHR - - Type MC (with locking device) Water excluding aircap Item Description Spec. 8 9 0 Female thread or flange Flange Guide pin for float Spindle Hand wheel Locking device 8 00 80 0 00 0 9 8x 0 80 0 8x 0 0 8 0 8x 90 00 0 0 0 0 8x8 00 0 0 8 0 0 0 80 8x8 80 80 90 0 8 00 0 x8 / 0 0 8 x8 0 0 0 x8 D D A B C H h t F P-mm Holes inch mm mm mm mm mm mm mm mm drilling Available in other materials upon request. Brass Steel coated with rilsan USSR Register of Shipping DOT Request special gas tight version for Nitrogen padding P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. drwg. no.: - 80 AP - - Type MW Aircap Other standards available DN00-DN0 Size DN00 thru DN0 provided with ball float Item Description Spec. House Cover 00 8 9 x 0 8 90 9 0 0 x 00 0 9 00 x 0 0 8 8 0 9 9 0 x 8 00 0 9 0 9 8x DN DN A B C H h F P-mm Holes inch mm mm mm mm mm mm mm drilling Steel Steel DN00 Size DN00 provided with circular float. For fuel oil tanks and ballast tanks with cathodic protection flame screen is required.. When using gravity discharge, or owerfilling, please consult us for sizing. P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. drwg. no.: - 8 HHR - Type MP (with locking device) Water excluding aircap for submersible operation Female thread or flange Flange Female thread or flange 00 00 00 x 8 00 80 0 00 0 9 8x 0 0 0 8 0 8x 90 00 80 0 0 0 0 8x8 00 0 0 8 0 0 80 8x8 80 80 90 90 8 00 0 x8 / 0 0 8 x8 0 0 0 9 0 0 x8 D D A B C H h t F P-mm Holes inch mm mm mm mm mm mm mm mm drilling Item Description Spec. House Guide pin PVC 8 holder 8a holder Steel Execution of seat and seat holder for MP. For fuel oil tanks and ballast tanks with cathodic protection flame screen is required.. When using gravity discharge, or owerfilling, please consult us for sizing. P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9.8 drwg. no.: - 98008 AP - Type MM Air cap/valve for mud tank Item Description Spec. Housing Disc O-ring Spring Steel Viton Nod. cast iron 8 9 Polyethylene 0 Guide pin 8 00 0 0 0 0 9 8x DN DN A B C H G F P-mm Holes inch mm mm mm mm mm mm mm drilling P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9.9 drwg. no.: 8 09 - - - Type SO Aircap 00 0 0 00 x Female thread or flange Flange Item Description Spec. Spec. Body Screen-ring Ball base Bronze Bronze Bronze ring 0 0 0 9 0 x 8 00 0 80 0 9 8x 00 0 8x 0 9 8 0 8x 0 0 8x8 00 9 0 0 0 80 8x8 / 90 90 00 0 0 0 8x8 80 0 80 00 0 x8 / 0 0 8 x8 0 0 0 x8 d d H A t D P-mm Holes inch mm mm mm mm mm drilling R.I.N.A. USSR Register of Shipping P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9.0 drwg. no.: 8 09 - - - Type SOC Aircap with cover 0 9 9 0 0 x Female thread or flange Flange Item Description Spec. House Guide pin 8 holder 00 0 00 x 9 90 0 0 8x 8 00 80 80 0 9 8x 0 00 9 8 0 8x 0 0 0 8x8 00 0 0 0 0 80 8x8 80 80 00 0 x8 / 0 8 x8 0 0 0 x8 d d H A t D P-mm Holes inch mm mm mm mm mm drilling R.I.N.A. USSR Register of Shipping P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. REV. drwg. no.: 09 - - Type SON Aircap Other standards available 00 00 00 00 x 0 0 0 9 0 x Item Description Spec. Spec. (lower part) Ball Ball base 0x0 /sq.inch PVC ring 8 00 0 0 0 0 9 8x 8 00 90 0 8x 0 9 0 8 0 8x 8 9 0 0 8x8 00 8 0 0 80 8x8 80 0 00 0 x8 / 0 0 0 8 x8 0 80 x8 d d H A t D P-mm Holes inch mm mm mm mm mm drilling Bronze Bronze PVC R.I.N.A.. For fuel oil tanks and ballast tanks with cathodic protection flame screen is required.. When using gravity discharge, or owerfilling, please consult us for sizing. P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. drwg. no.: 9-R- - - - Type MS Water excluding aircap with cover Female thread or flange 00 9 0 00 80 90 x 00 00 0 0 9 00 x 0 0 0 0 0 0 9 0 x 8 00 9 0 80 0 0 0 9 8x 9 9 0 9 0 8x 0 8 8 8 0 0 8 0 8x 0 80 90 00 0 0 8x 8 00 0 0 80 0 80 8x 8 80 89 0 88 8 0 00 0 x 8 / 0 0 88 0 8 8 x 8 0 0 9, 0 9 9 x 8 D D Q A B C H K F P-mm Holes inch mm mm mm mm mm mm mm mm drilling Item Description Spec. Guide pin Welding flange Steel 8 Pipe, supplied by yard Steel Nodular cast iron Nodular cast iron USSR Register of Shipping Nippon Kaiji Kyokai. For fuel oil tanks and ballast tanks with cathodic protection flame screen is required.. When using gravity discharge, or owerfilling, please consult us for sizing. P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K
9. drwg. no.: 9-R- 80 AP - Type MS Aircap 0 0 00 90 8 0 0 x 0 xm 00 0 0 9 00 x 0 0 xm0 0 0 00 0 9 9 0 x 00 xm0 D D a a H h A B C E D P-mm Holes D P-mm Holes inch mm mm mm mm mm mm mm mm mm mm drilling drilling Item Description Spec. House Cover Netring Steel Steel Bronze. For fuel oil tanks and ballast tanks with cathodic protection flame screen is required.. When using gravity discharge, or owerfilling, please consult us for sizing. P R E S - V A C E N G I N E E R I N G A / S D K - 0 A L L E R Ø D D E N M A R K