H41W stainless steel non-return swing flange check valve-CE ISO ANSI JIS DIN high temperature pressure oil gas
Stainless steel flanged lift check valve is flange-connected. The internal piston disc lifts by medium pressure to open flow and drops by gravity to block reverse flow. Low flow resistance, tight sealing, widely used in water, oil and chemical pipelines to prevent backflow.
This valve stops medium back flow effectively.
Flange connection boosts its sealing and reliability.
Structural features
The valve disc moves vertically along the valve body.
Its sealing pair fits tightly and perfectly.
Alloy materials form the valve’s sealing surfaces.
These surfaces resist wear, heat and corrosion.
Diverse valve body materials fit various pipelines.
Working principle
Forward medium pressure lifts the valve disc up.
The movement opens the fluid passage fully.
Back flow makes the disc drop to the valve seat.
The closed disc blocks reverse medium flow.
Technical parameters
Its nominal pressure ranges PN1.6–10.0MPa.
It works at -29℃ to 550℃ temperatures.
Its diameter covers DN15 to DN1200mm.
It suits water, oil, steam and other media.
Installation and Maintenance
Align flow direction with the valve body arrow.
It fits horizontal or vertical pipeline mounting.
Check sealing surfaces for wear and corrosion.
Clean internal impurities regularly in the valve.
Keep the valve disc moving flexibly up and down.
Application fields
It serves petroleum, chemical and power industries.
It also applies to metallurgy pipeline systems.
It guarantees industrial equipment safe operation.
