Vickers | 4CKKD95-18T-S
4CKKD95-18T-S
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The 4CKKD95-18T-S check valve belongs to the Check Valves series manufactured by Vickers. This pilot operated check valve permits free flow toward actuators and locks the circuit when pressure reverses, supporting controlled motion in hydraulic automation. Designed as a screw-in cartridge, it mounts directly in a manifold to minimize line connections. The aluminum housing reduces mass while still enduring 350 bar system pressure. A 25:1 pilot ratio converts a small pilot signal into sufficient force to open the poppet, allowing remote release of the lock. The valve passes up to 90 L/min through its SAE ports, so it fits medium-capacity circuits without excessive pressure drop.
The body provides four SAE ports that align with four internal flow paths, enabling parallel pilot and main flow management inside one component. Static leakage is limited to 0.3 cc/min, keeping actuators in position when the valve is closed even during long dwell periods. There is no pilot piston seal, which simplifies maintenance while relying on precise clearances for sealing. Overall dimensions of 5 in length and 2.75 in height create a compact form that occupies only 20.625 in³ in a manifold cavity, and a weight of 0.54 lb eases handling during assembly. Together these characteristics allow the valve to deliver secure load holding and quick release without adding significant bulk to hydraulic manifolds.
Technical Specifications
Flow Rate
90 L/min
Housing Material
Aluminum
Installation Type
Screw-In Cartridge
Leakage
0.3 cc/min
Number Of Housing Ports
4
Number Of Valve Ports
4
Pilot Piston Seal
No
Pilot Ratio
25:1
Port Type
SAE
Pressure Rating
350 bar
Product Height
2.75 in
Product Length
5 in
Product Volume
20.625 in³
Product Weight
0.54 lb
Valve Type
Pilot Operated Check Valve
1620 Old Apex Road
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