Flanged Ball Valve Supplier-GNEE
Ball valves and gate valves are the same type of valves. The difference is that the closing member is a sphere. The sphere rotates around the center line of the valve body to open and close. The flange ball valve standard GB/T21465-2008 "Valve Terminology" is defined as a valve in which the opening and closing parts (ball) are driven by the valve stem and rotate around the axis of the valve stem.
Ball valve flange type Specification
|
Size Range
|
1/2" to 6" |
|
Material
|
SS316 Cast Steel |
|
Working Pressure
|
10kg/cm² |
|
Flange Connections
|
ANSI 150# / 300# JIS 10K PN10 / PN16 |
|
Valve Body Material
|
Cast Steel A216 WCB SS316 / CF8M |
|
Applicable Medium
|
General Oil, Gas & Water Applications |
Flange valve materials
| Item | Description | Material |
|---|---|---|
| 1 | Body | ASTM A351-CF8M |
| 2 | Cap | ASTM A351-CF8M |
| 3 | Ball | ASTM A351-CF8M |
| 4 | Ball Seat | TFM 1600 |
| 5 | Body Seal | PTFE |
| 6 | Thrust Washer | PTFE |
| 7 | Packing | PTFE |
| 8 | Stem | ASTM A276-316 |
| 9 | Gland Nut | AISI 304 |
| 10 | Stop Pin | AISI 304 |
| 11 | Handle | AISI 304 |
| 12 | Handle Sleeve | PVC |
| 13 | Stem Nut | AISI 304 |
| 14 | Spring Washer | AISI 304 |
| 15 | Bolt | AISI 304 |
| 16 | Gland | AISI 304 |
| 17 | Stopper | AISI 304 |
| 18 | Circlips for Shaft | AISI 304 |
| 19 | Steel Tube | AISI 304 |
| 20 | Wrench Block | AISI 304 |
| 21 | Bolt | AISI 304 |
What are the structural characteristics of flange ball valves?
Flange ball valve structure features:
1, opening and closing without friction
This feature completely solves the problem of traditional valves affecting sealing due to mutual friction between sealing surfaces.
2,Top-mounted structure
The valve installed on the pipeline can be directly online inspection and maintenance, can effectively reduce the device stop, reduce costs.
3,Single valve seat design
Eliminate the problem that the medium in the cavity of the valve affects the safety of use due to abnormal pressurization.
4,Low torque design
Special structural design of the valve stem, just with a small handwheel valve can easily open and close.
5,Wedge seal structure
The valve is relying on the mechanical force provided by the valve stem, the ball wedge pressure to the valve seat and sealing, so that the sealing of the valve is not subject to changes in pipeline differential pressure, in a variety of operating conditions sealing performance are reliably guaranteed.
6,Self-cleaning structure of sealing surface
When the ball is tilted away from the seat, the fluid in the pipeline passes uniformly through 360° along the sealing surface of the ball, which not only eliminates the localized scouring of the valve seat by the high-speed fluid, but also washes away the accumulation on the sealing surface to achieve the purpose of self-cleaning.
Ball Valves Detail
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