OPTIMUM-FLOW TECHNOLOGY BY P I P E R …oilstates.com/wp-content/uploads/Oil-States-Piper-Valve-Subsea...compact ball valves &hot stab assemblies for subsea service subsea service

C OM PA C T B A L L VA LV E S

& H O T S TA B A S S E M B L I E S

F O R S U B S E A S E R V I C E

S U B S E A S E R V I C E V A LV E S

SubseaSolutions

O I L S T A T E S P I P E R V A L V EO I L S T A T E S P I P E R V A L V E

O P T I M U M - F L O W T E C H N O L O G Y B Y P I P E R

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T E M P O R A R Y S E R V I C E A P P L I C A T I O N S• Pig Launcher/Receiver• Gooseneck Connectors• Riser Pull-in Heads• Buoyancy Modules• Lay-down Head• Test Manifold• Pressure Caps

HISTORYOil States Piper Valve began manufacturingcompact ball and check valves in 1996.We produced our first subsea valve in 1998.The design was an integral ball /check valvecombination to be used in 10,000 feet ofwater to control the riser booster line on adrill-ship. The valve remained in this drillingfluid service without incident until it wasreplaced in 2009. Since that time, we havesold thousands of valves that have all beenplaced in subsea service.

TEMPORARY VS. PERMANENT SVC.Many subsea valve applications have to bedesigned to remain in submerged servicefor the anticipated life of the field - whichcan be as long as 30 years.These permanent service valves are designedwith special features to perform for thatperiod of service. These include corrosionresistant overlays, double metal barrierexternal seals, and tungsten carbide over-laid ball and seats.Certain subsea valve applications generallyhave a relatively short submerged service,from several months up to 5 years.Temporary service applications include piglauncher/receivers, lay-down heads, testmanifolds and others. Oil States Piper Valve’sXylan® coated carbon steel ball and checkvalves perform exceptionally for this sub-merged time frame, and are offered as aneconomical alternative to valves designedfor 30 years of service.

• Three Separate Bearing Surfaces between the stem & bonnet result in lower torque than competitor’s valves.

• Extra-Large Ball-to-Seat Contact Area reduces torque, assures positive sealing and distributes the load between ball and seat seal for enhanced seat life.

• Removable Seat Carriersallows balanced pressure around the upstream seat,reducing break torque.

• Available in 1” thru 10” sizes • Pressure Classes include ANSI 1500, API 5000, ANSI 2500, API 10000& API 15000 (1”& 2”).

• Wide range of materials available to suit various application requirements.

• Weld nipple and flanges are separate from the body group, allowing for material flexibilityand shipment of weldables in advance. Fabrication of equipment can proceed while body groups are being assembled and tested.• Available in single ball/single stem, single ball/double stem, double ball/single stem and double ball/double stem configurations.• Our 2”check valves can bolt directly to our ball valve, reducing overall length.

Temporary ServiceSubseaValves

M O D U L A R S Y S T E M D E S I G N

P I P E R O P T I M U M - F L O W T E C H N O L O G Y

p i p e r v a l v e . c o m

S U P E R I O R P E R F O R M A N C E I N T E M P O R A R Y S U B S E A E N V I R O N M E N T S

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D E S I G N E D F O R 3 0 Y E A R S U B M E R G E D S E R V I C E

Oil States Piper Valve’s Series MST Permanent Service Subsea Metal-Seated Ball Valves offer the following features:

Permanent ServiceSubseaValves

• Tungsten Carbide Overlay on ball/seat mating surfaces, lapped to each other for positive sealing.

• Internal Trunnion Blocks reduce the sizeand weight of the valve, and the number of external seals.

• ROV OperableInterfaces or Subsea Actuationoptions available.

• Optional Anti-static Design

• Single & Double balldesigns available.

• Valves Designed for 30 YearSubmerged Service in water depths to 12,000 feet.

• Eight Separate Bearing Surfaces inside theMST ball valve helps reduce friction, resulting in lower break and operating torque.

• Wave Springs provide uniform pre-load on the seats, assuring reliable low pressure sealing.

• Double Block & Bleed Design for testingseat integrity prior to installation.

• Available In integral ball /check valve combinations

• Double Metal Barrier Seals employ Z-ringtechnology on all external connections.

DOUBLE METAL BARRIER SEAL TECHNOLOGYPiper employs our patented Z-Ring sealing technology on all external connections ofour permanent service subsea valves. Thering is designed to deform under the properbolt torque and allow the two flange facesto fully contact each other. Each flange sealgroove and face have a corrosion resistantalloy (CRA) overlay which, when properlymade up, will form a metal-to -metal sealbetween the Z-Ring and the ring grooves,and a second metal-to -metal seal betweenflange faces.



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Series SF Hot Stab Assemblies

1”10,000 psiDouble Sided Assembly

w/Debris Cap

D E S I G N E D F O R H I G H P R E S S U R E / H I G H F L OW S E R V I C E

OilStatesPiperValve’sSeriesSFHighPressureHotStabsoffer the following features:

MODULAR SYSTEM HOT STAB DESIGN Piper’s Series “SF” Hot Stab receptacle iscomprised of finished machine componentsthat require no fabrication. Our receptaclebody is the same for single or double sidedconfigurations, so the customer has theflexibility to make changes to their hotstabs up to the point of deployment. Inaddition, Piper receptacles can be easilyremoved from decommissioned equipmentby removing the bolts on the outlet swivelflange connection. A new outlet connectionkit can be ordered, and the receptacle canbe installed on new subsea equipment.Our single sided and double sided recepta-cles use the same male stab, pressureplugs, and dummy stabs so there is noneed for additional male stab inventory.

• Swivel Flange Weld Connection eliminates two welds required on competitive products. Weld nipples can be shipped in advance of the hot stab assembly, allowing fabrication of subsea equipment to proceed while manufacturing the assemblies.

• Piper Hot Stab Assemblies use the same male stab for either single or double sided receptacles.

• Male Stab Swivel Collar allows for rotation of the stab handle into thereceptacle J-slot without rotating the stab seals.

• Male Stab Handle is available in a variety of common subsea designs to meet customer requirements.

• Swivel Flange Connection allows for easy removal of the receptacle after decommissioning, for re-use on other subsea equipment.

• Receptacle can easily be converted to single or double sided, by the customer, even in the field.

• Available in sizes 1” thru 4”• Working pressures of ANSI 2500, API 10000 & API 15000.

2,0002,000

1,8001,800

1,6001,600

1,4001,400

1,2001,200

1,0001,000

•• 1 inch1 inch•• 2 inch2 inch•• 3 inch3 inch•• 4 inch4 inch800800

600600

400400

200200

0000 5050 100100 150150

Pressure Differential (PSI)Pressure Differential (PSI)

Hot Stab Flow Rate vs. Pressure DropHot Stab Flow Rate vs. Pressure Drop

Flow

Rate

(GPM

)Flo

w Ra

te (G

PM)

200200 250250 300300



Q U I C K A N D S E C U R E C O N N E C T I O N S F O R S U B S E A S E R V I C E

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LowPressureHot StabAssemblies

D E S I G N E D F O R L O W P R E S S U R E / H I G H F L OW S E R V I C E

OilStatesPiperValve’s Series SFLowPressureHotStabs offer the following features:

HIGH PERFORMANCE IN AN ECONOMICAL DESIGNWe designed our low pressure hot stabassembly to be an economic alternative tousing high pressure hot stabs for low pres-sure applications. Features include:• Receptacle is machined from Stainless Steel casing and outlet connection is cold-extruded to eliminate the weld-let.• Receptacle liner is available in acetyl or Stainless Steel.• Screened cage welded to the end of the receptacle allow seawater to enter the receptacle from both the flooding stab and receptacle, reducing flooding time.Stab assemblies include:• Flooding Stabs - for initial filling of chambers.• Male Stabs- for filling chambers with fresh water or nitrogen.• Pressure Plugs - act as secondary barrier, eliminating one ball valve.• Dummy Plugs - installed in receptacle to preventmarinegrowthonsealing surfaces.

S E R V I C E A P P L I C A T I O N S• Buoyancy Modules for Hybrid Riser Systems• Suction Piles

Male Stab

Flooding Stab Receptacle

Pressure Plug



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Subsea Check ValvesD E S I G N E D F O R H I G H P R E S S U R E / H I G H F L OW S E R V I C EOil States Piper Valve’s Subsea Check Valves offer the following features:

Double Block & Bleed ValvesT H E S O L U T I ON FOR COMPA C T S U B S E A DOUB L E I S O L AT I ONOil States Piper Valve’s Double Block & Bleed Valves offer the following features:

Piper’sSubseaCheckValves andDouble Block & Bleed ValvesO P T I M U M - F L O W T E C H N O L O G Y S U B S E A S O L U T I O N S

• Piper Subsea Check Valves are a flapper design and are full open under flow, resulting in a piggable check valve.

• 30 Year Permanent Service Check Valves are available upon request.

• Available in Double Ball/SingleStem &Double Ball/Double Stem Configurations.Optional bleed port available upon request.

• Available in all sizes and working pressures as our single ball valves, for both temporary and permanent service applications.

• Available in sizes Nominal 1” thru 12”• Working pressures of ANSI 1500, API 3000, ANSI 2500, API 10,000.



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P R O D U C T V E R I F I C A T I O N A N D T E S T I N GOil States Piper Valve continually strives to improve its products and increase their performance. A direct result of this commitment is product verification that is obtained through stringent testing guidelines of API 6A, API 6D, API 598, API 17D, and others. Piper valves are also subjected to the following performance testing.

• API 6FA/6FDSpecification for Fire Test for Ball Valves and Check Valves.

• API 6A Appendix F PR2Performance Verification Testing combining both the effects of pressure and temperature.

• Erosive Flow TestingConsisting of 1,000 Open/Close cycles against a .1%, by volume, sand-laden slurryflowing at a velocity of 3 meters /second.

• Hyperbaric Testing (Subsea Applications)100% of Piper’s subsea valves are subjected to external pressure equal to 10,000 feetof submerged service and held to prove the valves external pressure integrity.

• API 6A PSL 3 & 3G, PSL 4Additional material testing, extended hydrostatic and gas testing.

Piper’s Quality Commitment

D E D I C A T E D T O Y O U R S U C C E S S

Piper CertificationAtOil States Piper Valve,we continually update our certification programs to comply with our industry’s leading qualifying authorities; including API 6D, API 6A, API 17D, API 6DSS, International Organization for Standardization (ISO), Det Norske Veritas (DNV), American Bureau of Shipping (ABS), and others.



©2014 Piper Oil States Piper Valve • LITHO USA • PIPER-SUBSEA-Bro-PARPRES-0214 • Xylan® is a registered trademark of Whitford.

Your Local Piper Representative

Piper Corporate HeadquartersPiper Corporate Headquarters


Oil States Piper Valve1020 East Grand BoulevardOklahoma City, OK 73129 USATel 405.671.2000Fax [email protected]


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OPTIMUM-FLOW TECHNOLOGY BY P I P E R …oilstates.com/wp-content/uploads/Oil-States-Piper-Valve-Subsea...compact ball valves &hot stab assemblies for subsea service subsea service