Check Valve

We are a leading Manufacturer of wafer check valve, swing check valve, dual plate check valve and cast iron wafer check valve from Chennai, India.

Wafer Check Valve

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Product Details:

Brand	JD Controls
Body Material	Cast Iron, Cast Steel, Forged Steel etc
Size	42 inch
Suitable For	Horizontal, Vertical Line
Body Design	Single Plate
Design Standard	API 6D
Pressure Rating	150 PSIG

Design:

It has short face-to-face dimensions and low weight allows a simple space saving installation between the companion flanges.
The valves are suitable to mounting between weld neck or slip on type companion flanges of different standards.
They are specially developed for applications where a low-pressure loss is essential.

Principle:

Opening and closing of the valve will take place at an extremely low-pressure difference over the valve disc.
The eccentric disc shaft combination with the disc seat guarantees a positive shut off returning media.
Wafer check valves are becoming the preferred type of check valve for most applications, due to their compact design and relatively low cost.

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Product Details:

Size	42 inch
Brand	JD Controls
Media	Water
End Connection	Flanged End
Material	Carbon Steel, Stainless Steel, Mild Steel
Temperature	100 deg C
Pressure Rating	20 Kg/Cm2
Seat Leakage	Zero Leakage
Design Standard	BS 1868
Suitable For	Horizontal, Vertical Line

About Product:

They are bolted cover design and above pressure seal design.
It is designed for long service life and maintenance free operation.
It has a full-flow area body and is equipped with a disc arm with dual precision pins for optimum disc connection and protection against damage due to vibration.

Principle:

A swing check valve consists of a flap or disc of the same diameter as the pipe bore, which hangs down in the flow path.
With flow in the forwards direction, the pressure of the fluid forces the disc to hinge upwards, allowing flow through the valve.
Reverse flow will cause the disc to shut against the seat and stop the fluid going back down the pipe.
In the absence of flow, the weight of the flap is responsible for the closure of the valve; however, in some cases, closure may be assisted by the use of a weighted lever.

Salient Features:

Body & Cover made from high quality casting with liberal sections. The castings are precision machined for high performance.
Body Seat Ring & Disc machined to close Tolerances providing smooth action and accurate seating.
Seat Ring Screwed in to the body are replaceable type. Seal welded type Seat Ring & Integral Seat cab also be offered on special request.
Stellited Seat Ring & Disc also be offered on special request.
In built wear life for long duration in service.

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