2CI – Double Pilot Operated Check Valve
The Polyhydron 2CI Series refers to a line of Double Pilot Operated Check Valves designed to provide pressure holding for hydraulic actuators (typically cylinders) in both directions.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The Polyhydron Double Pilot Operated Check Valve – 2CI is designed to provide pilot-operated check valve functionality on either port A, port B, or both ports. It allows controlled flow in one direction while ensuring secure locking in the opposite direction. Reverse free flow is achieved through hydraulic opening using internal pilot pressure from the opposite working port, ensuring reliable performance and load holding in hydraulic systems.
| Feature | Specification Details |
|---|---|
| Construction | Seat type, internally pilot operated |
| Mounting Style | Threaded port body (Factory standard) |
| Service Ports | A1 and B1 (Pressure holding facility) |
| Max. Working Pressure | 315 bar (for all ports) |
| Max. Flow Capacity | 80 L/min |
| Cracking Pressure | 1, 3, or 5 bar (Options available) |
| Area Ratio | 3.5 : 1 (Pilot piston : Decompression poppet) |
| Hydraulic Medium | Mineral Oil |
| Temperature Range | -20°C to +80°C |
| Viscosity Range | 10 cSt to 380 cSt |
| Fluid Cleanliness | ISO 4406 20/18/15 or better |
| Mass (Approx.) | 2.0 kg to 2.1 kg (model dependent) |
Key Features & Specifications
- Function:Â These valves allow free flow in one direction and offer leak-free closure in the opposite direction until pilot pressure is applied from the opposite line. They are primarily used to lock a load in both push and pull positions.
- Series Models: Common models include 2CI10T (Threaded) and versions with various port options like A, B, or both A and B.
- Operating Pressure: Typically rated for a working pressure up to 315 bar.
- Flow Capacity: The Size 10 model (2CI10T) handles flow up to 80 L/min.
- Mounting: Generally available as Threaded port models, often factory standard for easy integration.
- Temperature & Fluid: Designed for mineral oil with a temperature range of -20°C to +80°C.
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