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SUN HYDRAULICS CORP
CKIFSCV
Load Holding

Cartridge

$353.30

SUN HYDRAULICS CORP

MATERIAL:  CKIFSCV

SUMMARY:  Cartridge

Quantity in stock: 2

Quantity Details:
  • Hydrotech Stock: 0 can ship March 28, 2024
  • Factory Stock: 2 can ship June 27, 2024
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This valve is a pilot to open check valve. It has a sealed pilot, a steel seat, and is vented. It allows free flow from the valve (port 2) to the load (port 1) and blocks flow in the opposite direction. Pressure at the external pilot port will open the valve from port 1 to port 2. Pilot pressure needed to open the valve is directly proportional to the load pressure at port 1. The valve is insensitive to pressure at port 2 because the spring chamber references the vent (port 3).

  • There is a positve seal between ports 2 and 3.
  • These valves should be considered service items only. New applications should use valves from the CV*V family.
  • This valve has a proportional pressure reducing characteristic that limits the pressure developed at port 1 to about 75% of the pressure at port 2.
  • Pilot pressure as low as 15 psi (1 bar) higher than the pressure at the vent can prevent the valve from closing.
  • Provides hose break protection, prevents loads from drifting and positively locks pressurized loads.
  • Sealed pilot for use in circuits where cross port leakage is undesirable.
  • Pilot-to-open check cartridges are locking valves, not motion control valves. For motion control applications, use counterbalance valves.
  • Extremely low leakage. If the load drifts due to the valve, the seat has probably been damaged by contamination and the valve should be replaced.
  • This 3 port pilot-to-open check valve is not physically interchangeable with other 3 port pilot-to-open check valves or counterbalance valves due to the different pilot/vent configuration.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.

Cavity T-19A
Series 4
Capacity 120 gpm480 L/min.
Pilot Ratio 3:13:1
Maximum Operating Pressure 5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 1 drops/min.0,07 cc/min.
Valve Hex Size 1 5/8 in.41,3 mm
Valve Installation Torque 350 - 375 lbf ft474 - 508 Nm
Model Weight 2.80 lb1,30 kg
Seal kit - Cartridge Viton: 990-019-006

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