lug type check valve

lug type check valve

lug type check valve is designed for: 1)Oil & gas production;2)Petroleum refining ; 3)Petrochemical ; 4)Pulp & paper ; 5)Shipbuilding. when the bumper of each plate collides, there is an equal and opposite force acting on the plates which prevents significant bending moments acting on the hinge pin of the plate. Plate bumpers are supplied as standard on all sizes, pressures and types of VETZ Dual Plate Check Valves. Clearance on the bumper allow and ensure the plates to hit each other rather than the stop pin. This helps prevent large forces being exerted on the stop pin which could cause damage.

Design Features of lug type check valve can be summarized as: 1)Dual plate or single plate ;2)Light-weight & compact design ;3)Spring loaded disc ;4)Resilient or Metal seated. Due to the clearance between the plate hinge and the hinge pin the heel of the plate lifts with the initial flow, as the foot of the spring acts beyond the center of pressure of the plate, as the flow then increases through the valve the plates open without the heels of the plate scuffing the body seat, which lengthens the seat life.

Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, and/or inexpensive. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.