Silent Type Check Valve

Product Introduction:

The check valve is often used as the bottom valve of the pumping device to prevent the backflow of water. The combination of check valve and stop valve can play the role of safety isolation. The disadvantage is that the resistance is large and the sealing performance is poor when closed.

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Description

Technical Parameters

(1) Quality control of the main body blank. All parts of this valve are forgings. The forging process is carried out in strict accordance with the forging process regulations and process cards. The initial forging temperature, final forging temperature, deformation degree and deformation speed are strictly controlled, and the process regulations are specified The cooling method performs cooling. Chemical composition analysis, mechanical property test, intergranular corrosion test, metallographic analysis of the forged product, after analysis, test and determination, all meet the corresponding standards.

The quality of forgings is guaranteed by ultrasonic inspection and liquid penetration inspection. Forgings are 100% ultrasonically inspected and evaluated in accordance with RCC-M requirements, and liquid penetration inspections and evaluations are performed on all surfaces of the forgings.

Material	Body	Ductile Iron,QT450
	Screw	SS304 Stainless Steel
	Gasket	NBR
End Connections	Flange × Flange
Flanges	ANSI150LB, BS 5404,GB Standard
Available Size	DN50 thru DN300 (3" thru 12")
Type	Flexible Disc
Working pressure	16 bar
Color	Red/Blue
Media	Water

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1) Flange End:ANSI150LB/BS5404;

2) Screw Material:SS304 Stainless Steel;

3) Gasket Material:DUCTILE IRON;

4) Body Material:Ductile Iron,QT450;

5) Disc Material:Ductile Iron,QT450,COVERD BY NBR;

6) Surface Finishing:Epoxy Red or Blue.