The assortment of stainless steel check valves

Swing check valves

Swing Check Valves with the humble hinge institutions, there is also a like the door of the disc is free to depend on the inclined surface of the seat. In order to ensure that each disc to seat the appropriate location, in valve design hinge agencies, in order to have enough plug valve kai xuan space, and the valve genuine and comprehensive engagement with the seat. All disc can be made from metal, can be embedded in the metal on leather, rubber, or synthetic coverage, depending on the use of performance requirements. Swing check valves in the fully open conditions, almost unimpeded fluid pressure, so the pressure drop across the valve is relatively small.

Lift check valve

Lift check valve is located in the body of the valve seat valve seal surface. In addition to this check valve can be freely valve movements, like the rest of the cut-off valve, fluid pressure from the valve seat valve seal surface lift, medium return led to the disc back to seat, and cut off the flow. According to the conditions of use, valve can be all-metal structure, can be embedded in the disc on the shelf rubber mat or rubber ring form. As cut-off valve, fluid lifting of check valve through the channel is narrow, so that the lift check valve through the pressure drop than the swing check valve is big, and swing check valves are very few restrictions.

Stainless steel check valve

1) and the original plastic check valve production principles are the same. Overall is stainless steel or stainless iron. Need stiletto installation, advantage is that have the effect of the unidirectional fire, smoke prevention effect.

2) is the latest card button to install the new check valve, stainless steel or stainless iron is the whole, the vane type hinge type opening and closing valve sealing performance is better. Installation is more simple, the only is insufficient, or one-way fire. Could not reach the requirements of state administration of fire control.