Double Disc Wafer Check Valve

Description

Check valves shall be double disc, wafer type, with torsion spring sensing to close. Double Disc Check Valves are constructed with stainless steel trim for years of trouble-free operation. Double flap check valves can be installed in horizontal or vertical pipelines that carry clean water or air. The valve is not suitable for conveying solids-containing fluids such as untreated sewage or waste water. This valve is not suitable for fluids containing harmful gases. Double Disc Check Valves are designed to provide flow in the direction of the arrow marked on the external nameplate and close immediately upon sensing a flow reversal. The nameplate will also indicate the valve size, model, working pressure and material of construction.

Wafer type double flap check valve is used in pure pipelines and industrial, environmental protection, water treatment, high-rise building water supply and drainage pipelines to prevent medium backflow. The check valve adopts the wafer type, the disc is two semicircles, and the spring is forced to reset.

Wafer type double disc check valve is composed of valve body, valve disc, valve stem and spring, etc., and adopts wafer connection. Due to the short closing stroke of the disc and it is spring loaded, water hammer is significantly reduced. The valve is mainly suitable for urban, industrial and high-rise building water supply and drainage network. Because its structural length is shorter than that of general check valves, it is suitable for places with limited installation space. KA offers retainerless wafer valve body designs in carbon steel, stainless steel and other special cast alloys.

Wafer double flap check valve product Features:

1. The double-flap butterfly check valve has a short structural length, and its structural length is only 1/4~1/8 of the traditional flange check valve;

2. Small size and light weight, its weight is only 1/4~1/20 of the traditional flange check valve;

3. The disc of the double-clip butterfly check valve closes quickly and the water hammer pressure is small;

4. Both horizontal pipes and vertical pipes can be used, and the installation is convenient;

5. The double-clip butterfly check valve can flow smoothly and the fluid resistance is small;

6. The action is sensitive and the sealing performance is good;

7. The double disc butterfly check valve has a short disc stroke and low impact force;

8. The overall structure is simple and compact, and the shape is beautiful;

9. Long service life and high reliability.

Advantages

The double-plate wafer check valve is installed in the pipeline system, and its main function is to prevent the backflow of the medium. The check valve is an automatic valve that depends on the medium pressure to open and close. In the past, the H44 flanged swing check valve and the H41 flanged lift check valve were commonly used in China. These traditional check valves are bulky, large in fluid resistance, and water hammer pressure when the valve is closed. High, difficult to install and maintain, and short service life.

Design Features

The streamlined channel

Swing valve

Oil the hinge pin / through a highe pin

The weight of the bar design

Manufacturing Scope

Diameter: 2"~48"

Pressure: ANSI 150LB~2500LB

Operating Performance

Body Material: Carbon steel. Stainless steel, Alloy steel, Composite steel

Trim Material: According to API600

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