All welded axial flow check valve can be used in crude oil, refined oil, natural gas, gas, oxygen, chemical, light industry, urban sewage and other industrial fields. All the welding axial flow check valve pressure class Class150 ~ Class2500, PN10 ~ PN420; valve specifications DN25 ~ DN1200; body materials are carbon steel, alloy steel, stainless steel and so on.
The main features of the fully welded axial flow check valve are as follows:
1, check valve body as a whole forging the standard spherical shape, even in the case of complex force, have to get the best resistance to deformation.
2, check valve body with narrow gap submerged arc welding (all welding), without any external leakage.
3, streamlined flow channel design, flow resistance is small, good flow.
4, ball valve front and rear support at both ends, opening and closing without jamming, reliable operation.
5, accurate spring design to ensure low pressure sealing and low pressure opening.
6, seat double seal design, "zero" leak.
7, compact structure, small size, the valve can be installed at any angle.
8, low noise, energy saving and environmental protection.
9, for a wide range of seats can be designed according to the needs of a soft seal or hard seal.