Customization: | Available |
---|---|
Media: | Oil |
Material: | Cast Steel, Stainless Steel |
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Product Features
1. The structure, based on eccentric principal, transmits to reach tighten, regulation, closure. The sealing is metal seal ring with hard faced.
2. The semi-ball is made of double metal, with alloy welded on the primary material, and the seat with special welding treatment. The seal surface can meet customer's various request
3. O leakage.
4. Seat can be replaced.
Material standards | |||||
NO | Parts | Standard | Stainless steel | Weak acid | Low temperature |
1 | Bottom stem | ASTM A182 F6a | ASTM A182 F304 | ASTM A182 F6a | ASTM A350 LF2/ENP |
2 | Body | ASTM A216 WCB | ASTM A351 CF8M | ASTM A216 WCB | ASTM A352 LCB |
3 | Ball | ASTM A216 WCB | ASTM A182 F304 | ASTM A216 WCB | ASTM A352 LCB |
4 | Seat ring | ASTM A105 | ASTM A182 F304 | ASTM A105/ENP | ASTM A350 LF2 |
5 | Top stem | ASTM A182 F6a | ASTM A182 F304 | ASTM A182 F6a | ASTM A350 LF2/ENP |
6 | Yoke | ASTM A216 WCB | ASTM A351 CF8M | ASTM A216 WCB | ASTM A350 LCB |
Pressure test | ||||
PN(MPa) | Max. applied pressure(MPa) | Pressure Test(MPa) | ||
Shell test | max. applied pressure | Low pressure seal | ||
1.6 | 1.6 | 2.4 | 1.76 | 0.6 |
2.5 | 2.5 | 3.75 | 2.75 | |
4 | 4 | 6 | 4.4 |
Pressure test | ||||
Class | Max. applied pressure(MPa) | Pressure Test(MPa) | ||
Shell test | max. applied pressure | Low pressure seal | ||
150 | 2 | 3 | 2.2 | 0.6 |
300 | 5 | 7.5 | 5.5 |
Technical requirements | ||
Design standard | Design standard | API 608 |
End connection | ANSI B16.5 | |
Structure length | ANSI B16.10 | |
Test and inspect | API 608 | |
Applied conditions | Applied medium | Natural gas, liquefied petroleum gas |
Applied temperature | -196ºC~550ºC | |
Operation | Worm gear, Pneumatics, Electric, Pneumatic-hydraulic |