Technical Datasheet -- Trunnion Mounted Ball Valve -- API 6D SS316

Trunnion Mounted Ball Valve -- API 6D SS316

Technical Datasheet -- Split-Body Trunnion Ball Valve for Oil & Gas Pipeline Service

Document No.SV-DATA-TMBV-001

RevisionA

DateMay 2026

ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India

Trunnion-mounted split-body ball valves for critical oil & gas pipeline isolation service. Double block and bleed (DBB) capability with independent spring-loaded seats on both upstream and downstream sides. Fire-safe per API 607 / ISO 10497. Full bore or reduced bore per API 6D. Suitable for onshore and offshore pipeline applications including LNG and sour gas.

Technical Specifications

Parameter	Specification
Product Type	Trunnion Mounted Ball Valve (Split Body)
Category	Ball Valves
Size Range	2" to 24" (DN50 to DN600) -- other sizes on request
Pressure Class	Class 150 to Class 2500 per ASME B16.5 / API 6D
End Connections	RF / RTJ flanged per ASME B16.5 or butt-weld per ASME B16.25
Body Material	ASTM A216 WCB / ASTM A351 CF8M (SS316) / ASTM A352 LCC (low temp)
Ball Material	SS316 with ENP (electroless nickel plating) or solid SS316
Seat Material	PTFE / RPTFE / PEEK / Devlon / SS316 + graphite (fire-safe)
Stem Material	SS316 with anti-blowout design
Trunnion	SS316 trunnion blocks with PTFE / bronze bearings
Face-to-Face	API 6D long pattern or ASME B16.10
Bore	Full bore (FB) or reduced bore (RB) per API 6D
Operation	Lever (up to 6 inch) / Gear operator (8 inch and above) / Pneumatic / Electric / Hydraulic actuator
Leakage Class	API 598 / EN 12266-1 Class A -- zero leakage for soft seats
Fire Safe	API 607 / ISO 10497 -- secondary metal/graphite seat maintains shutoff after fire exposure
DBB Feature	Double block and bleed -- independent seat isolation with body cavity vent

Materials of Construction

Component	Material
Carbon Steel	ASTM A216 WCB, A105, A350 LF2 (low temperature)
Stainless Steel	ASTM A351 CF8M (SS316), CF3M (SS316L), A182 F316 / F316L
Low Alloy Steel	ASTM A217 WC6, WC9 (high temperature)
Low Temperature	ASTM A352 LCC, A350 LF2 (-46 deg C)
Seats	PTFE, RPTFE, PEEK, Devlon V-API, SS316 + graphite (fire-safe)

Testing & Inspection

Test	Requirement
Testing	Hydrostatic shell test 1.5 x WP per API 6D / API 598; Seat leakage test 1.1 x WP -- zero visible leakage; Functional test -- torque, full stroke, DBB verification; NDT: RT/UT/MT/PT per API 6D / ASME B16.34
Certification	ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports, fire-safe test certificate, API 6D monogram (on request)

Applicable Standards

Standard	Description
Design Standard	API 6D Pipeline Valves, API 607 Fire-Safe, ISO 17292

Notes

All valves are manufactured by Supreme Valves India as per our standard specifications.
Bore type (full bore FB or reduced bore RB) must be specified by the purchaser.
For sour gas service (H2S > 50 ppm), material upgrade to NACE MR0175 compliant SS316L or duplex SS is required.
For cryogenic service (below -50 deg C), extended bonnet, cryogenic packing, and low-temperature materials (ASTM A352 LCC) are required.
For subsea service, submarine-grade materials and double-barrier sealing are required -- contact engineering.
All valves are factory-tested per API 6D: hydrostatic shell test 1.5 x design pressure, seat leakage test 1.1 x design pressure (zero visible leakage for soft-seated valves), functional test (torque, full stroke, DBB verification), NDT per API 6D / ASME B16.34.
API 6D monogram available on request with third-party audit.