Created on 06/18/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
CKBD
Pilot-to-open check valve with sealed pilot
CAPACITY: 30 L/min. / CAVITY: T-163A
This valve is a pilot to open check valve. It has a 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.
TECHNICAL DATA
Pilot Ratio 3:1
Maximum Operating Pressure 350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 0,07 cc/min.
Seal kit - Cartridge Buna: 990-163-007
Seal kit - Cartridge Polyurethane: 990-163-002
Seal kit - Cartridge Viton: 990-163-006
(X)CONTROL
X Standard Pilot
L Manual Load Release
(C)CRACKING PRESSURE
C 30 psi (2 bar)
E 75 psi (5 bar)
(N)SEAL MATERIAL
N Buna-N
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
snhy.com/
CKBD
TECHNICAL FEATURES
Provides hose break protection, prevents loads from drifting and positively locks pressurized loads.
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.
Sealed pilot for use in circuits where cross port leakage is undesirable.
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.
PERFORMANCE CURVES
Model Code Example: CKBDXCNCONFIGURATION OPTIONS
Created on 06/18/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
