Wafer Lug Swing Slot End Flanged Cast Iron Stainless Steel Check Valve For Water Fire Protection
Media: Fresh Water, Sea Water
Temperature: Ordinary Temperature
Material: Stainless Steel
Connection Form: Flange
Structure: Butterfly
Pressure: Ordinary Pressure
Product Introduction
Product Description
Flanges according to ASME B/16.4716.5, Class 125 / 150; DIN 2501, PN10 / PN16
ASME B16.1/B16.2
Size: DN40-DN900/ 1.5"-36"
Materials:
Body: Cast Iron / Ductile Iron / Cast steel / Stainless steel / Aluminum bronze
Disc: Ductile Iron / Stainless steel / Aluminum bronze
Spring: Stainless stee(SS304, SS316, Inconel)
Stem: Stainless steel
Seat: EPDM / NBR / VITON / Stainless steel
Working pressure: 1.5"-12" 16 bar; 14"-24" 10 bar/16BAR; 28"-36" max 10 bar
Pressure test according to standards: API 598
The structure of wafer check valves includes several key features:
Body: The body of a wafer check valve is typically made of cast iron, carbon steel, or stainless steel. It is designed to be compact and lightweight, and to fit between two flanges in a pipeline.
Disc: The disc of a wafer check valve is typically made of a hard, corrosion-resistant material such as stainless steel, and is designed to be lightweight and easy to operate. It is typically held in place by a hinge pin or spring.
Hinge pin: The hinge pin is a small metal pin that holds the disc of the check valve in place. It allows the disc to swing freely, and ensures that it closes tightly against the valve seat when there is backflow in the pipeline.
Spring: Some wafer check valves are equipped with a spring that helps to close the valve when there is backflow in the pipeline. The spring provides additional force to ensure that the disc closes tightly against the valve seat.
Valve seat: The valve seat is the part of the check valve that the disc closes against when there is backflow in the pipeline. It is typically made of a soft, resilient material such as rubber or silicone, which helps to create a tight seal.
Flanges: Wafer check valves are designed to be installed between two flanges in a pipeline. The flanges are typically bolted together, and the check valve is held in place by the pressure of the fluid flowing through the pipeline.
Overall, the structure of a wafer check valve is designed to be compact, lightweight, and easy to install between two flanges in a pipeline. The key features of a wafer check valve include the body, disc, hinge pin, spring (if present), valve seat, and flanges.
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