Carbon Steel 3PC Trunnion Electric Actuator Ball Valve Gearbox BS
1. Trunnion-mounted Ball:
The ball is fixed and the seat rings are floating, free to move
along the valve axis.
Side load generated by the pressure acting on the ball is abosorbed
At low pressure the seat sealing action is achieved by the thrust
of the springs acting on the seat rings. As the pressure increase
the fluid pressure pushes the seat rings against the ball.
2. Independent ball and stem
The ball and stem are independent to minimize the effect of the
side thrust generated by the pressure acting on the ball
3. Anti-Static Design
The electrical conductance continuity between all the metallic
conponents is guaranteed and certified.
4. Soft Seat valves:
In valves designed for standard service, a resilient material is
inserted into the metal seat holder to provide a soft seating
action in addition to the metal to metal seating between the ball
and the seat rings
5. Metal Seat Valves
Valves designed for abrasive service or for operation in
temperatures that prohibit the use of resilient meterial have
seating action provided by the metal to metal contact between the
ball and the seat rings. Seating faces are hardface.
6. Fire Safe
Trunnion-mounted ball valves are designed fire safe to API6FA,
API607 ,BS6755 Part 2.
Hand operated valves are supplied either with a lever or gear
Actuacted valve can be supplied with Electrice actuator, Pneumatic
Actuactor. Gear operators can be easily removed in-service and
replaced with actuactors.
|Item||Part Name||Standard||Low Temperature||Stainless Steel|
|1||Body||ASTM A216 WCB||ASTM A352 LCC||ASTM A351 CF8M|
|3||Ball||ASTM A105+ENP||ASTM A350 LF2+ENP||ASTM A182 F316|
|5||Bonnet||ASTM A216 WCB||ASTM A352 LCC||ASTM A351 CF8M|
|6||Bolt||ASTM A193 B7/B7M||ASTM A320 L7/L7M||ASTM A193 B8M|
|7||Nut||ASTM A194 2H/2HM||ASTM A194 7/7M||ASTM A194 8M|
|8||Anti Satic Ball||SS304||SS304||SS316|
|9||Anti Satic Spring||SS304||SS304||SS316|
|10||Stem||AISI 1040+ENP/AISI 1045+ENP||AISI 4140+ENP||ASTM A276 36|
|12||Gland||ASTM 276 410||ASTM 276 410||ASTM 276 316|
|13||Gland Flange||ASTM A216 WCB||ASTM A352 LCC||ASTM A351 CF8|
|15||Bolt||ASTM A193 B7/B7M||ASTM A320 L7/L7M||ASTM A193 B8|
**Gear Operator, Electrical Operator, Hydraulic operator and
Note: Other materials are available upon request.
- Design and manufacture: BS 5351/API 608/API 6D/ASME B16.34
- Face to Face Dimensions: ASME B16.10/API 6D
- Flange Ends Dimensions: ASME B16.5
- BW Ends Dimensions: ASME B16.25
- Pressure-Temperature Ratings: ASME B16.34
- Fire Safe Design: API 607/API 6FA
- Inspection and test Standard: API6D/API598
All of our pressure tests and meterial checks are witnessed by an
inspector who signs off on their accuracy. A laminated card is then
attached to the valve with each test and material check indicated,
as certification to our customer that these procedures have been
followed. Eevery valve come with a certificate.