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4CKD90 Series Single Pilot Operated Cartridge Check Valves, Up To 6000 PSI & 24 GPM

Description & Features

Application & Operation	A decompression pilot check can be used in most applications that use a standard pilot operated check. Free flow in one direction and load holding in the other. The decompression feature allows locked-in pressure to decay in a controlled fashion, reducing hydraulic noise and instability caused by the rapid loss of energy from the actuator. The valve is effective in clamping circuits and when used with intensifiers or when there are high load induced pressures.
Cartridge	Model 4CKD90, sold seperately
Flow Rating	24 GPM
Housing	Cavity Size A12336, sold separately.
Maximum Operating Pressure	Cylinder Port 1: 6000 psi, Ports 2 & 3: 5000 psi
Pilot Ratios	25:1 decompression stage, 3:1 main stage
Recommended Filtration	18/13
Temperature Range	-22° to +194°F

Products

Model Number	Part Number	Pilot Ratio	Seal Material	Price	Action
4CKD901S3 4CKD90 Series Cartridge Valve	401AA00006A	25:1	Nitrile

Product Questions & Answers (1)

Question by: Clint M on Feb 13, 2026, 8:33 AM

So this thing'll keep my cylinder from driftin' when the valve's sittin' neutral, right? Just wanna make sure before I order.

Answer by: Customer Support on Feb 14, 2026, 7:15 PM

That's exactly what it's designed to do. These pilot-operated check valves are made to lock a cylinder in place without any leakage when your control valve is in the neutral position.