API Cast Steel Check Valve
Screwed 、Clamp 、Welded vavle The American standard cast steel check valve has hard alloy welded on the guide rib by buildup welding. The guide sleeve of the upper cavity of the valve body is made of stainless steel to ensure smooth action of the valve flap; the valve flap and valve seat sealing faces are made of cobalt based hard alloy by plasma spray welding, and are thus high in hardness, erosion resistant and durable. With advanced pressure seal design and high purity graphite ring gasket, the valve is highly airtight. The middle cavity of the valve is of pressure self tightening seal structure; the higher the pressure in the cavity, the better the sealing performance is. The valve flap rotates along the pin outside of the valve seat to reduce impact at the moment of closing.
Keyword： API Cast Steel Check Valve
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Detail
Screwed 、Clamp 、Welded vavle
The American standard cast steel check valve has hard alloy welded on the guide rib by buildup welding. The guide sleeve of the upper cavity of the valve body is made of stainless steel to ensure smooth action of the valve flap; the valve flap and valve seat sealing faces are made of cobalt based hard alloy by plasma spray welding, and are thus high in hardness, erosion resistant and durable. With advanced pressure seal design and high purity graphite ring gasket, the valve is highly airtight. The middle cavity of the valve is of pressure self tightening seal structure; the higher the pressure in the cavity, the better the sealing performance is. The valve flap rotates along the pin outside of the valve seat to reduce impact at the moment of closing.
Design standards
Design and manufacture: BS 5352, ASME B16.34
Connecting size: ASME B16.11
Test and inspection: API 598
Performance Specification
Nominal diameter:1/2"(15mm)-40"(1000mm)
Nominal pressure:150~800LB
Strength test:15XPN MPa
Seal tese:1.1XPN MPa
Gas seal test:0.6MPa
Valve body material:WCB,CF8,CF8M
Suitable medium:water,steam,oil,products,nitric
Suitable temperature:-29°C~425°C
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