Active Member
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[China]
Address: Tonghai Road, Yongqian Hi-tech Park, Longwan, Wenzhou City, Zhejiang Province, China
Contact name:Jenny Xiao
zhejiang teyi valve co.,ltd. |
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Carbon Steel 3PC Trunnion Electric Actuator Ball Valve Gearbox BS 5351 PN64
Design Features:
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 by bearings.
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.
7. Actuaction
Hand operated valves are supplied either with a lever or gear operated
Actuacted valve can be supplied with Electrice actuator, Pneumatic Actuactor. Gear operators can be easily removed in-service and replaced with actuactors.
Material(Partial)
| Item | Part Name | Standard | Low Temperature | Stainless Steel |
| 1 | Body | ASTM A216 WCB | ASTM A352 LCC | ASTM A351 CF8M |
| 2 | Seat | PTFE/RPTFE | PTFE/RPTFE | PTFE/RPTFE |
| 3 | Ball | ASTM A105+ENP | ASTM A350 LF2+ENP | ASTM A182 F316 |
| 4 | Gasket | SS304/SS316+Graphite | ||
| 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 |
| 11 | Packing | Graphite/PTFE | ||
| 12 | Gland | ASTM 276 410 | ASTM 276 410 | ASTM 276 316 |
| 13 | Gland Flange | ASTM A216 WCB | ASTM A352 LCC | ASTM A351 CF8 |
| 14 | Lever | Carbon Steel | ||
| 15 | Bolt | ASTM A193 B7/B7M | ASTM A320 L7/L7M | ASTM A193 B8 |
| 16 | Thrust Washer | PTFE | ||
**Gear Operator, Electrical Operator, Hydraulic operator and etc,are avaliable
Note: Other materials are available upon request.
Design Standard:
Certified Quality
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.
