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Trunnion Mounted Ball Valves

Oswal's Trunnion Mounted Ball Valve is the result of Innovative engineering. It embodies all the quality, Performance, value and safety features required for critical applications.

In Trunnion Mounted Ball Valve, the ball rotates without moving on the horizontal axis, where as seats are floating and free to move on the same axis. As the pressure increases the force on the seat ring by the pressure pushes towards the ball giving 'BIDIRECTIONAL' sealing.

Thrust due to (Fluid Pressure + spring) both on the upstream and downstream, pushes seat ring towards the ball for positive sealing under all conditions.

When the valve is in closed position, the fluid trapped in the body cavity is subjected to thermal expansion and the valve cavity pressure increases. The excessive pressure buildup within the valve cavity is relieved automatically when the pressure inside exceed the spring load on the seat. Internal Trunnion reduces the chance of fluid leakage to the atmosphere as in the case of external Trunnion Mounted ball Valves.

Product Range For Cast And Forged Ball Valves

Valve Type Class Rating Size Range Shell Material As Per Specification
Trunnion Mounted Ball Valves 150# 1/2" to 36"
ASTM A216 Gr. WCB
ASTM A217 Gr. WC1
ASTM A217 Gr. WC6

ASTM A216 Gr. WCB
ASTM A217 Gr. WC1
ASTM A217 Gr. WC6
ASTM A217 Gr. WC9
ASTM A217 Gr. C5
ASTM A217 Gr. C12
ASTM A351 Gr. F8
ASTM A351 Gr. F3
ASTM A351 Gr. F8M
ASTM A351 Gr. CF3M
ASTM A351 Gr. CN7M
ASTM A351 Gr. CF8C
ASTM A351 Gr. CD4Mcu
ASTM A351 Gr. CK3MCuN
ASTM A352 Gr. LCA
ASTM A352 Gr. LCB
ASTM A352 Gr. LCC
ASTM A494 Gr. CW6MC
ASTM A494 Gr. CW2M
ASTM A494 Gr. CW2M
ASTM A494 Gr. CY40
ASTM A494 Gr. CU5MCuC
ASTM A995 Gr. 1A
ASTM A995 Gr. 4A
ASTM A995 Gr. 5A
ASTM A995 Gr. 6A
NACE malt. Grade to NACE MR0175/NACE MR

Trunnion Mounted Ball Valve 300# 1/2" to 36"
Trunnion Mounted Ball Valve 600# 1/2" to 36"
Trunnion Mounted Ball Valve 900# 1/2" to 16"
Trunnion Mounted Ball Valve 1500# 1/2" to 12"
Floating Ball Valve 150# 1/2" to 8"
Floating Ball Valve 300# 1/2" to 8"
Floating Ball Valve 600# 1/2" to 8"
Ball Valve - Cryogenic 150# 2" to 24"
Ball Valve - Cryogenic 300# 2" to 24"
Ball Valve - Cryogenic 600# 2" to 24""

Note:
  • Valves can be supplied with actuator,pad lock and other accessories like limit switch,position indicator,solenoid valve as per requirement
  • Stem extention,underground service features are available
  • Design standard upto 24" is api 600 and above 24" is bs 1414

Standards

Design Standard API 6D/ASME B16.34
Testing Standard API 6D/API 598
Face To Face ASME B 16.10/API 6D
End Connection Flanged End - ASME B 16.5
Butt Weld End – ASME B 16.25
Pressure – Temperature Chart ASME B 16.34

Valve Operation

Lever
2” – 3” - Class 150, 300, 600
Gear Operator
6” & Above - Class 150, 300, 600

Material

STRUCTURE End Connection Flanged End Raised Face, Butt Weld End, RTJ,. ETC
Operation lever, Gear Operator, Electrical Actuator, Pneumatic, Hydraulic
MATERIAL Shell WCB, WC1, WC6, WC9, LCB, LCC, LC3, C5, C12, CF8, CF8M, CF3, CF3M, CF8C, CN7M, CD4MCu,
Hastelloy, Inconel, Duplex Stainless Steel
Trim 13% Cr Steel, 304 , 304L, 316, 316L, 321, 347, F51, Monel