Forged Wcb Gate Valve with Steel Socket Welding for Durability

PN is the pressure rating in European standards (e.g., DIN, GB), measured in bar (e.g., PN16 means 1.6 MPa). Class is used in American standards (ANSI/ASME), like Class 150. They differ due to distinct reference temperatures and material strength curves.

SS304 is a general-purpose stainless steel suitable for water, oil, gas, and non-corrosive media. SS316 includes Molybdenum, offering superior resistance to chloride corrosion and pitting, ideal for marine, chemical, or highly corrosive settings.

Swing Check Valves have a hinge-swung disc, allowing lower flow resistance, ideal for large pipes. Lift Check Valves have a vertically moving disc, offering better sealing but higher resistance, for smaller pipes.

Ball valves are for full-on/off service. In a half-open position, high-velocity flow erodes seats and causes 'wire drawing' on the ball, reducing lifespan. For throttling, use globe or control valves.

A Full Bore valve has a port diameter matching the pipe ID, allowing minimal resistance and 'pigging' operations. A Reduced Bore valve has a smaller port, cost-effective for systems where pressure drop isn't critical.