two way check valve Description
Two-way check valve is a specially designed automatic valve that can prevent medium backflow in both directions and is suitable for fluid systems that require two-way control. Its core functions include:
Two-way sealing: Through the double valve disc structure, it can block medium backflow in both forward and reverse directions, protecting pipelines and equipment from reverse pressure shock;
Multi-function control: Supports one-way cutoff, full-pass or specific direction flow limitation to meet complex working conditions;
System stability: Reduce water hammer effect and pressure fluctuations, and extend the life of hydraulic pumps, cylinders and other equipment.
Structure and key components
Core structure
Dual disc design: symmetrically distributed discs (such as metal or rubber materials) are used, each disc corresponds to a flow direction and seals independently; Spring assistance: high-strength springs are configured to ensure that the disc quickly resets and closes when there is no medium pressure (response time ≤0.5 seconds; Valve body material: stainless steel, aluminum alloy or carbon steel are mostly used, suitable for high pressure (Class 150~300) and corrosive media environments. Sealing technology
Double sealing ring: high-pressure resistant rubber (such as NBR) or metal seals are used, and the leakage is ≤0.1% of the diameter; Redundant protection: some industrial-grade valves integrate fireproof or anti-stuck structures (such as anti-eccentric sliding grooves) to improve reliability under extreme working conditions.
two way check valve Specification
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ITEM |
Two Way Check Valve |
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Material |
Stainless Steel |
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Sealing material |
PTFE |
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Port Size |
DN200, 8" |
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Pressure |
PN16 Check Valve |
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Working Temperature |
-10°C~180°C |
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Power |
Manual |
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Type |
Stainless Steel Check Valve |
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Structure |
Check |
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End Connection |
Flange Check Valve |
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Optional Actuation |
Pneumatic Actuated or Electric Actuated |
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two way check valve
Applications
| Area | Applications | Problems solved |
|---|---|---|
| Hydraulic system | Hydraulic pump outlet and cylinder circuit to prevent oil backflow causing pump idling or pressure imbalance | Avoid equipment overload and oil line pollution |
| Chemical pipeline | Multi-directional media delivery pipeline to prevent cross contamination of acid and alkali liquids or uncontrolled reactions | Ensure process safety and medium purity |
| Water treatment system | Backwash filter to control water flow direction and avoid backflow of impurities | Reduce filter clogging and maintenance costs |
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