CK125 – Pilot Check Valve
Description
General
| Description | pilot check valve |
|---|---|
| Construction | Screw-in Cartridge construction for cavity |
| Tightening Torque | 100 Nm |
| Ambient Temp. | -20°C to +50°C |
| Cartridge Material | Working: Hardened, ground steel; External: Zinc plated |
| Manifold Material | Aluminium or SG Iron |
| Cavity | TH877 |
| Weight | CK125 Cartridge: 0.08 kg CK125 3W N 3: 0.37 kg CK125 3W N 3 IN1: 0.42 kg CK2 125 3W N 3: 0.67 kg |
Hydraulic
| Hydraulic Fluid | Mineral oils. Contact sales office for other fluids. |
|---|---|
| Max. Pressure | 350 bar |
| Peak Pressure | 400 bar |
| Max. Flow | 150 lpm |
| Rated Flow | 125 lpm |
| Leakage | Less than 0.3 ml/min (5 dpm) |
| Max. Contamination Level | ISO 4406 18/16/13 (25 µm nominal) |
| Viscosity Range | 5 to 500 cSt |
| Hydraulic Fluid Temp. | -20°C to +90°C (Standard Seals) |
| Seal Kit Number | Contact sales office |
| Ordering example | CK125 6W N 3 IN1 |
|---|---|
| Datasheet | 5-520 |
Application
Pilot check valves allow flow to pass in one direction, with a low pressure drop, then prevent reverse flow until pilot pressure is applied. There are many applications for this valve type, the most common being to lock and hold a cylinder, or another hydraulic actuator, in position. The CK125 is a cartridge valve ideally suited for fitting directly into a cylinder, giving economy of installation, direct control of cylinder movement and ease of servicing.
Operation
Pressure on the valve port causes the poppet to lift against the spring force, allowing the flow to the cylinder port. Reverse flow is prevented by the poppet reseating. Pressure applied to the pilot port will overcome the cylinder port pressure and lift the poppet from its seat, allowing flow from the cylinder to valve port.
Features
Hardened and ground poppet gives excellent flow capability for valve size, positive sealing and long working life. Cartridge construction allows installation in actuators, manifold blocks and hydraulic Integrated Circuits. The valve fits the same cavity as the counterbalance valve. Seal on piston prevents leakage between Port 2 and Port 3.
Available on request. Ask an engineer →
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