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Specifications
Class 150 Cast Steel Trunnion Type Ball Valve
Specifications
Class 150 Cast Steel Trunnion Type Ball Valve
Trunnion Mounted Ball Valve
Forged steel & Cast steel
ANSI class 150 to 2500L
Characteristics of API Ball Valve
1. Design and manufacture of product according to American state standard ANSI B16.34, American petroleum institute standard API608 API6D.
2. Liquid resistance smallest of all type of valve.
3. Open quickly, only turn on 90 degree may finish open and close.
4. Seat material use teflon or R-teflon, low friction, seal reliable open and close lightly.
5. Movement of ball on the middle of valve seat has wipe function so may suit medium of suspending granule.
6. Stem use back seal and hyperbatic structure which may prevent medium to striking stem on the condition of pressure.
7. According to the need of consumer, may design for anti-static electricity, fireproof and use a locker to prevent wrong operator.
8. Body of ball can be floated or fixed accordance with the of strength of opening and closing. Seat of fixed ball valve floatable realize seal purpose depend on piston effect of medium pressure so to lighten the strength of open and close.
| Type | Desing And Manufacture | Face to face /End to end | Flange Dimension | Pressure and Temperature | lnspection and test |
| Split flange ball valve | BS5351 API6D | ASME B16.10 | ASME B16.5 | ASME B16.34 | API598 |
| Fixed flange valve | API6D |
Pressure Test
| Nominal Pressure | Shell Test | Water Seal Test | Air Seal Test | |||
| MPa | Lbf/in2 | MPa | Lbf/in2 | MPa | Lbf/in2 | |
| 150 | 3.1 | 450 | 2.2 | 315 | 0.5-0.7 | 60-100 |
| 300 | 7.8 | 1125 | 5.6 | 815 | ||
| 600 | 15.3 | 2225 | 11.2 | 1630 | ||
| 900 | 23.1 | 3350 | 16.8 | 2440 | ||
| 1500 | 38.4 | 5575 | 28.1 | 4080 | ||
Main Part Material
| Body | ASTM A216 WCB | ASTM A351 CF8 | ASTM A351 CF3 | ASTM A351 CF8M | ASTM A351 CF3M |
| Ball stem | F6a F304 F316 | F304 F316 | F304L | F316 | F316L |
| Sealing face | Reinforced TFE | ||||
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