Skewed disc rotary check valve is used in coal chemical industry, petroleum, pipeline transportation, petrochemical, pharmaceutical, thermal power, metallurgy, coal mine, new energy and other industrial fields. Its use in the pipeline system to prevent fluid reflux hazards, can protect mechanical equipment, both with the general check valve function characteristics, but also has to reduce water hammer hazards, reduce noise and open and close faster and other advantages.

Mute check valve consists of valve body, valve seat, conductor, valve flap, shaft tile and spring and other parts. The internal flow path adopts streamlined design, small pressure loss, short valve opening and closing stroke, can be closed when the pump stops to avoid water hammer sound, forming a mute. Mainly used in water supply, drainage, fire fighting, HVAC systems, can be installed at the outlet of the pump to avoid backflow of media and water hammer damage to the pump.

Female threaded check valve is to rely on the flow of the medium itself and automatically open and close the valve flap, used to prevent the medium backflow valve, also known as check valve, check valve, backflow valve, and back pressure valve. Female threaded check valve only allows the medium to flow in one direction, and prevent the direction of flow. Usually this valve is automatic, in a direction of flow of fluid pressure, valve open; fluid flow in the opposite direction, by the fluid pressure and the valve flap of the self-weighting valve flap action on the valve seat, thus cutting off the flow.

Lift check valve performance characteristics according to GB12235 standard, valve flap along the center positioning for lifting movement, the liner is made of materials with good performance and small friction coefficient, action, sealing performance is excellent. The products are used in petroleum, chemical, thermal power station and other various working conditions of the pipeline, applicable medium for water, oil, steam and so on. The main role is to prevent the medium backflow, to prevent the pump and its driving motor machine reversal, as well as the discharge of the medium in the container.

Double flap check valve is for the traditional use of swing check valve has a larger volume, the valve closes when the water hammer pressure is higher, the installation size is large and so on. Double flap check valve has the characteristics of short structure length, small volume, light weight, fast flap closing, small water hammer pressure, easy installation, sensitive action, good sealing performance, short flap stroke, simple and compact overall structure.

The sealing ring of rubber flap check valve adopts inclined design, short closing time, which can reduce the water hammer pressure.The flap is made of nitrile rubber and steel plate, which is resistant to scouring and has good sealing performance.The structure of rubber flap check valve is simple, and it is convenient for maintenance, repair and transportation. Mainly used in horizontal installation of water supply and drainage systems, can be installed in the pump outlet to avoid backflow and water hammer damage to the pump. Rubber flap check valve can also be installed in the reservoir inlet and outlet pipe bypass pipe, so as to avoid backflow of pool water into the water supply system.