Composition:
It is mainly composed of valve body, valve cover, valve seat, valve flap, rocker, pin, bracket and other parts. It can be divided into single flap rotary check valve, suitable for large and medium calibre, large calibre single flap rotary check valve mostly adopts slow closing structure. Reduce the medium water hammer phenomenon, DN50-DN600. double flap rotary check valve, suitable for large and medium calibre, clamping double flap rotary check valve, structure length is short, light weight, can also be used in slow-closing structure. dn50-dn1200. multi-flap rotary check valve. Suitable for low pressure, extra large calibre pipelines.DN800-DN1800.
Material:
Valve body material customers can choose according to demand, ductile iron, stainless steel, these two are the most commonly used materials for swing check valve body, can meet most of the application requirements. And the valve sealing ring may be selected according to the requirements or medium temperature EPDM / bronze / NBR.
For the valve to enjoy the internal and external surface epoxy spraying.
Working Principle:
The valve flap rotates around the valve seat axis to achieve opening and closing. When the fluid flows from the inlet end, the valve flap is pushed open and rotates around the axis, and the fluid can pass through; when the fluid flows in the reverse direction, the valve flap closes under the action of fluid pressure, preventing the fluid from flowing backwards.
Advantages:
Swing check valve Small fluid resistance, strong flow capacity, suitable for high viscosity, solid particles in the fluid, opening and closing process with less noise. And it is applicable from low pressure to high pressure, GB/T12236, API6D, BS1868. all have specific application requirements for it, widely used.
Applications:
Swing check valves are suitable for piping systems where the medium flows faster and the calibre is larger. Due to its large opening angle, the swing check valve is usually installed on the horizontal pipeline in order to make full use of its structural features. In addition, the rotary check valve has a better sealing performance, suitable for occasions with high requirements for sealing. When selecting a check valve, comprehensive consideration should be given to the specific requirements of use and piping conditions to ensure the safe and efficient operation of the system.
Choose A Better Manufacturer
A wide range of gate valves
EATHU has been in the pipeline industry for many years, exporting thousands of tonnes of valves every year, we produce valves in various materials, ductile iron valves, stainless steel valves, brass valves, bronze valves, and we have several standard certificates, AWWA, ANSI, JIS, DIN, and WARS certificates. You can send your project to EATHU, we will provide you the most suitable valve solution.
Cost-effective
EATHU valves in the quality of strict compliance with the ISO9001 quality management system to ensure product quality, in EATHU, from the enquiry on a dedicated team to serve you, provide valve programme advice, the absolute advantage of the price, and the logistics company for long-term cooperation, can provide you with the most appropriate freight prices. A comprehensive quotation programme, our comprehensive valve programme than you go to separate quotation has the absolute price advantage.
