Ductile Iron Swing Check Valve
Product Introduction
Ductile Iron Swing Check Valve serves as fundamental infrastructure for directional flow security. Its pendulum-style sealing surface responds organically to current variations - freely permitting forward passage while creating an impenetrable barrier against reflux. Cast in high-grade ductile iron for enduring performance in pressurized water networks, marine applications, and food-grade conveyance lines. The balanced pivot architecture prevents premature wear even with pulsating flows. As a passive safeguard requiring zero calibration, it outperforms complex control valves in reliability for flood prevention systems, shipboard piping, and bulk material transfer operations where simplicity ensures operational continuity.
Product Parameter
Product Name:Ductile Iron Silent Check Valve
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
Mounting Adaptability
Standard horizontal placement; vertical orientation feasible with directional compliance
Hydrodynamic
Efficiency: Minimal flow disturbance characteristics
Pulse Mitigation
Engineered to dissipate closure energy gradually
Sealing Solutions
Base metal sealing with performance-enhancing options
Maintenance Economy
Field-repairable without specialized tools
Infrastructure Application
Infrastructure Application: Water treatment plants, industrial fluid systems
FAQ
Q1：What is a flange swing check valve and how does it work?
A flange swing check valve allows fluid flow in one direction while preventing backflow. Its hinged disc automatically swings open with forward flow and closes when flow stops, making it ideal for water systems and industrial pipelines.
Q2：Why choose cast iron for swing check valves?
Cast iron offers excellent durability and cost-effectiveness for swing check valves. It withstands moderate pressure and temperature, making it suitable for municipal water supply, irrigation, and general industrial applications.
Q3：How do I install a swing-type check valve properly?
Install between two flanges with the valve arrow pointing in the flow direction. Ensure sufficient straight pipe upstream (5x diameter length) for optimal disc movement. No special tools required beyond standard flange gaskets and bolts.
Q4：What maintenance does a cast iron check valve need?
Our valves require minimal upkeep. Periodically check for debris accumulation and inspect the disc movement. No lubrication needed – the self-cleaning design prevents sediment buildup in most water applications.
Q5:How long do cast iron check valves typically last?
With proper installation and regular flow conditions, expect 8-12 years service life in water systems. Actual lifespan depends on water quality, operating frequency, and environmental factors.
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