PIPELINE VALVES --- DUAL PLATE WAFER CHECK VALVE


 
Design and Manufacturing Standards:
Basic Design: API 6D / API 594
Face to Face Dimension: API 6D / ANSI B16.10
Pipe Flange standard: ANSI B16.5
Inspection & Testing to: API 6D / API 598




  Valve Features:
1. Dual Plate, Swing type disc
2. Two torsion springs are used excreting on each of the pair valve plates, which close the plates quickly and automatically.
3. The quick-close action prevents the medium from flowing back and eliminates water-hammer effect.
4. This valve is short in length, so that it is rigid and easy to mount.
5. It is easy to install on pipeline which is laid horizontally or vertically.
6. This valve is tightly sealed without leakage under the pressure water test.
7. Safe and reliable in operation, high interference-resistance.
8. The hinge pin of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeline, for vertical installation the direction of flow should be downward.
9. metal to metal seal or metal seal are both available.
10. Long Pattern type.
 
Pressure Class and Size Range:
ANSI Class
Nominal Size
150
2" to 20"
300
2" to 16"
600
2" to 10"







Standard Material List:
No.
Part Name
Material
No.
Part Name
Material
1
Body
ASTM A216-WCB
5
Washer
ASTM A182-F316
2
Plug
Steel
6
Hook Screw
Steel
3
Stop Pin
ASTM A182-F316
7
Spring
ASTM A276-316
4
Hinge Pin
ASTM A182-F316
8
Plate Disc
ASTM A351-CF8M

Note: For dimension details, please order Tekval e-Catalogs or call for free CD catalogs


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