Check Valve – C (ISO)
The Polyhydron Check Valve – C (ISO) is a high-pressure, seat-type hydraulic valve designed for unidirectional flow control. Conforming to the ISO 5781 standard, it is primarily used in industrial hydraulic circuits to ensure fluid moves in one direction while preventing leakage or backflow in the reverse.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The polyhydron Check Valve – C (ISO) is a seat-type valve that allows free flow from port A to port B while ensuring leak-proof closure in the reverse direction. It is available in four standard interface sizes conforming to ISO 5781, IS 10187, and DIN 24340 standards. Each model is offered with four cracking pressure options: 0.5, 1.5, 3, and 5 bar, providing flexibility for different hydraulic applications.
| Feature | Specification |
|---|---|
| Construction | Seat-type, non-return valve |
| Mounting Interface | Conforms to ISO 5781, IS 10187, and DIN 24340 |
| Mounting Style | Subplate mounting (ISO models) |
| Maximum Working Pressure | 315 bar (for all ports) |
| Flow Direction | Free flow from Port A to Port B; Leak-free closure B to A |
| Cracking Pressure | 0, 0.5, 1.5, 3, and 5 bar |
| Hydraulic Medium | Mineral Oil |
| Viscosity Range | 10 cSt to 380 cSt |
| Temperature Range | -20°C to +80°C |
| Fluid Cleanliness | ISO 4406Â 20/18/15Â or better |
| Mounting Position | Optional |
Understanding the Model Code
The “C” model series is versatile and can be found in several configurations:
- Sizes:Â Generally available in four standard sizes (Size 10, 20, 30, etc.).
- Mounting Styles: Can be supplied for sub-plate mounting (standard for ISO models) or threaded/inline mounting.
- Construction:Â Typically made of durable metal (mild steel or stainless steel) often finished in chrome or powder coating to prevent corrosion.
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