Trunnion Ball Valve
MVS Soft Seated and Metal Seated Trunnion Ball Valve is the result of Innovative engineering. It embodies all the quality, Performance, value and safety features required for critical applications.
In api 6d trunnion mounted ball valves, 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 metal seated trunnion mounted ball 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 metal seat. Internal Trunnion reduces the chance of fluid leakage to the atmosphere as in the case of external Trunnion Mounted ball Valves.
Special Alloy Trunnion Ball Valves : All MVS Trunnion Ball Valve are available in these Special Alloys like Titanium Alloy, Zirconium Alloy, Nickel Alloy, Hastelloy Alloy, Inconel Alloy, Incoloy Alloy, Monel Alloy, Aluminium Bronze and Duplex Steel.
PRODUCT RANGE FOR CAST AND FORGED TRUNNION BALL VALVE – FULL BORE and REDUCED BORE
| Valve Type | Class Rating | Size Range | Shell Material Spec. |
| Trunnion 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. CF8
ASTM A351 Gr. CF3
ASTM A351 Gr. CF8M
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 Ball Valves | 300# | 1/2″ to 36″ |
| Trunnion Ball Valves | 600# | 1/2″ to 36″ |
| Trunnion Ball Valve | 900# | 1/2″ to 16″ |
| Trunnion 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 extension, underground service features are available. Design standard up to 24″ is api 600 and above 24″ is bs 1414 |
STANDARDS AND VALVE OPERATION :
| DESIGN STANDARD | : API 6D / ASME B 16.34 |
| TESTING STANDARD | : API 6D / API 598 |
| FACE TO FACE | : ASME B 16.10 / API 6D |
| PRESSURE TEMPERATURE CHART | : ASME B 16.34 |
| END CONNECTION | : Flanged Ends – ASME B 16.5 |
| : Butt Weld Ends – ASME B 16.25 |
| VALVE OPERATION | : Lever Operated 2”- 3” |
| (Class 150, 300, 600) | : Gear Operated 6” & Above |
MATERIAL OF CONSTRUCTION :
| 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 |