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CKBB

Load holding valve from Sun Hydraulics.

Description

This valve is a pilot to open check valve. It has a non-sealed pilot, a steel seat, and is non-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 pilot (port 3) will open the valve from port 1 to port 2. Pilot pressure needed at port 3 to open the valve is directly proportional to the load pressure at port 1. Pressure at port 2 directly opposes pilot pressure.

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  • Provides hose break protection, prevents loads from drifting and positively locks pressurized loads.
  • Standard unsealed pilot allows air trapped in the pilot line to be purged from the circuit.
  • Extremely low leakage. The seat and poppet are heat treated for long life. If the load drifts due to the valve, the seat has probably been damaged by contamination and the valve should be replaced.
  • Note: Available only with 30 psi or 75 psi (2 bar or 5 bar) check valve cracking pressures.
  • Pilot-to-open check cartridges are locking valves, not motion control valves. For motion control applications, use counterbalance valves.
  • For models with manual load release control option, turn load release clockwise to release load.
  • 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.

Technical Data

Note: Data may vary by configuration. See CONFIGURATION section.

Cavity T-163A
Series 0
Capacity 7.5 gpm
Capacity (metric) 30 L/min.
Maximum Operating Pressure 5000 psi
Maximum Operating Pressure (metric) 350 bar
Pilot Ratio 3:1
Maximum Valve Leakage at 110 SUS (24 cSt) 1 drops/min.
Maximum Valve Leakage at 110 SUS (24 cSt) (metric) 0,07 cc/min.
Valve Hex Size 3/4 in.
Valve Hex Size (metric) 19,1 mm
Valve Installation Torque 20 – 25 lbf ft
Valve Installation Torque (metric) 27 – 33 Nm
Model Weight 0.20 lb.
Model Weight (metric) 0.09 kg.
Seal kit – Cartridge Viton: 990163006

Configuration Options

Control

X ★ Standard Pilot
L Manual Load Release

Cracking Pressure

C ★ 30 psi (2 bar)
E 75 psi (5 bar)

Seal Material

N ★ Buna-N
V Viton
E EPDM

Material/Coating

/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
Cavity: T-163A
Nominal Capacity: 30 lpm (7.5 gpm)
Pilot Ratio: 3:1
Downloads
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Possible variants

CKBBLCE, CKBB-LCE, CKBBLCN, CKBB-LCN, CKBBLCN/AP, CKBB-LCN/AP, CKBBLCN/LH, CKBB-LCN/LH, CKBBLCV, CKBB-LCV, CKBBLCV/AP, CKBB-LCV/AP, CKBBLCV/LH, CKBB-LCV/LH, CKBBLEE, CKBB-LEE, CKBBLEN, CKBB-LEN, CKBBLEN/AP, CKBB-LEN/AP, CKBBLEN/LH, CKBB-LEN/LH, CKBBLEV, CKBB-LEV, CKBBLEV/AP, CKBB-LEV/AP, CKBBLEV/LH, CKBB-LEV/LH, CKBBXCE, CKBB-XCE, CKBBXCN, CKBB-XCN, CKBBXCN/AP, CKBB-XCN/AP, CKBBXCN/LH, CKBB-XCN/LH, CKBBXCV, CKBB-XCV, CKBBXCV/AP, CKBB-XCV/AP, CKBBXCV/LH, CKBB-XCV/LH, CKBBXEE, CKBB-XEE, CKBBXEN, CKBB-XEN, CKBBXEN/AP, CKBB-XEN/AP, CKBBXEN/LH, CKBB-XEN/LH, CKBBXEV, CKBB-XEV, CKBBXEV/AP, CKBB-XEV/AP, CKBBXEV/LH, CKBB-XEV/LH