Swing Check Valve Flange Type
Product Introduction
Swing Check Valve Flange Type autonomously regulates unidirectional fluid movement. Its pivoting disc design harnesses forward flow energy for effortless opening while sealing instantly against backflow. Crafted from corrosion-resistant ductile iron, this self-actuating solution protects pipelines in municipal water distribution, HVAC systems, and general industrial liquid transport. The streamlined internal geometry minimizes turbulence and pressure drop. Horizontal installation recommended for optimal disc response. Ideal for safeguarding pumps and preventing reverse flow in continuous operation systems with moderate pressure requirements.
Product Parameter
Product Name:Swing Check Valve Flange Type
Main Material:Ductile Iron(Cast Iron)
Working Temperature:0℃ to 80℃(32℉ to 176℉ )
Size:2" to 12"(DN50 to DN300)
Pressure Rating:1.0Mpa/1.6Mpa/2.5Mpa
Working Medium:Water/Sewage
Color:Blue/Red
Applications:Used both vertically and horizontally;Used in one-way flow pipeline to prevent the water from back flow
Product Material
Body
Ductile Iron,QT450-10
01
Crossbar/Stem
Stainless Steel 304
02
Disc
Ductile Iron covered by EPDM
03
Seal
NBR
04
Bolt
Stainless Steel 304
05
Product Features
Installation Versatility
Performs optimally horizontally; functions vertically under upward flow conditions
Flow Enhancement
Reduced energy loss through optimized channel design
Closure Modulation
Dampers regulate disc movement during flow reversal
Leak Prevention
Positive shutoff achieved through precision machining
Serviceability
Modular construction simplifies component replacement
Application Scope
Suitable for diverse media including water and neutral chemicals
FAQ
Q1: What's the primary function of a swing check valve?
Swing check valves automatically prevent reverse flow in pipelines using a disc that swings open with forward flow and closes by gravity/backflow. They're essential for protecting pumps, compressors, and equipment from damage caused by fluid reversal. Unlike manual valves, they operate without external controls, making them ideal for continuous processes in water systems, HVAC, and industrial applications where flow direction must be strictly maintained.
Q2:Can swing check valves be installed vertically?
Yes, but only with upward-flowing media. In vertical installations, gravity must assist closure – downward flow would hold the disc open. Horizontal mounting is preferred for optimal performance. Always verify flow direction arrows on the valve body. For vertical pipes with variable flow directions, consider spring-assisted check valves instead. Improper orientation causes failure to seal and accelerates wear.
Q3:What maintenance do swing check valves require?
Conduct annual:
1.Seal inspections: Check disc/seat wear via test ports
2.Hinge lubrication: Prevent sticking in gritty environments
3.Disc movement tests: Verify free rotation
4.Gasket replacement: Prevent flange leaks
Maintenance frequency increases with abrasive media or frequent cycling. Always isolate pressure before servicing.
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