Pressure Seal Cover Swing Check Valve

The body is in carbon or stainless steel and is also available in many other CRA. It is carefully designed for total reliability, to keep the pressure drops to a minimum and simple maintenance. The basic dimensions, wall thickness, face to face and flanges, comply with the relevant BS, API and ASME standards. The body neck is cylindrical in order to host the pressure seal bonnet. The seat is welded in or threaded if required and an integral over-travel stop for the disc is incorporated. Two threaded bosses are provided for the location of the hinge pin, closed by threaded or welded plugs for absolute tightness in temperature. Valves are eventually provided with drain threaded or welded connection. The connection ends are typically butt-welding type for high temperature applications.