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CKIB

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.
  • Optional external porting out of the hex end of the cartridge is available for external piloting. In this configuration, port 3 is blocked. See Control options E, and P.
  • Pilot-to-open check cartridges are locking valves, not motion control valves. For motion control applications, use counterbalance valves.
  • This 3 port pilot-to-open check valve and 3 port counterbalance valves are physically interchangeable (i.e. same cavities, same flow path for a given frame size). However, cartridge extension dimensions from the mounting surface may vary.
  • For models with manual load release control option, turn load release clockwise to release load.
  • Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
  • Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
  • 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-19A
Series 4
Capacity 120 gpm
Capacity (metric) 480 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 1 5/8 in.
Valve Hex Size (metric) 41,3 mm
Valve Installation Torque 350 – 375 lbf ft
Valve Installation Torque (metric) 474 – 508 Nm
Model Weight 2.65 lb.
Model Weight (metric) 1.20 kg.
Seal kit – Cartridge Viton: 990019006

Configuration Options

Control

X ★ Standard Pilot
L Manual Load Release
E External 4-SAE Pilot Port, Port 3 Blocked
G Slow Acting Pilot
P External 1/4 NPTF Pilot Port, Port 3 Blocked

Cracking Pressure

C ★ 30 psi (2 bar)
A 4 psi (0,3 bar)
B 15 psi (1 bar)
D 50 psi (3,5 bar)
E 75 psi (5 bar)
F 100 psi (7 bar)
Z 1 psi (0,07 bar)

Seal Material

N ★ Buna-N
V Viton
E EPDM

Material/Coating

/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
Cavity: T-19A
Nominal Capacity: 120 gpm (480 lpm )
Pilot Ratio: 3:1
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Possible variants

CKIBEAE, CKIB-EAE, CKIBEAN, CKIB-EAN, CKIBEAV, CKIB-EAV, CKIBEBE, CKIB-EBE, CKIBEBN, CKIB-EBN, CKIBEBV, CKIB-EBV, CKIBECE, CKIB-ECE, CKIBECN, CKIB-ECN, CKIBECV, CKIB-ECV, CKIBEDE, CKIB-EDE, CKIBEDN, CKIB-EDN, CKIBEDV, CKIB-EDV, CKIBEEE, CKIB-EEE, CKIBEEN, CKIB-EEN, CKIBEEV, CKIB-EEV, CKIBEFE, CKIB-EFE, CKIBEFN, CKIB-EFN, CKIBEFV, CKIB-EFV, CKIBEZE, CKIB-EZE, CKIBEZN, CKIB-EZN, CKIBEZV, CKIB-EZV, CKIBGAN, CKIB-GAN, CKIBGAV, CKIB-GAV, CKIBGBN, CKIB-GBN, CKIBGBV, CKIB-GBV, CKIBGCN, CKIB-GCN, CKIBGCV, CKIB-GCV, CKIBGDN, CKIB-GDN, CKIBGDV, CKIB-GDV, CKIBGEN, CKIB-GEN, CKIBGEV, CKIB-GEV, CKIBGFN, CKIB-GFN, CKIBGFV, CKIB-GFV, CKIBGZN, CKIB-GZN, CKIBGZV, CKIB-GZV, CKIBLAE, CKIB-LAE, CKIBLAN, CKIB-LAN, CKIBLAN/AP, CKIB-LAN/AP, CKIBLAN/LH, CKIB-LAN/LH, CKIBLAV, CKIB-LAV, CKIBLAV/AP, CKIB-LAV/AP, CKIBLAV/LH, CKIB-LAV/LH, CKIBLBE, CKIB-LBE, CKIBLBN, CKIB-LBN, CKIBLBN/AP, CKIB-LBN/AP, CKIBLBN/LH, CKIB-LBN/LH, CKIBLBV, CKIB-LBV, CKIBLBV/AP, CKIB-LBV/AP, CKIBLBV/LH, CKIB-LBV/LH, CKIBLCE, CKIB-LCE, CKIBLCN, CKIB-LCN, CKIBLCN/AP, CKIB-LCN/AP, CKIBLCN/LH, CKIB-LCN/LH, CKIBLCV, CKIB-LCV, CKIBLCV/AP, CKIB-LCV/AP, CKIBLCV/LH, CKIB-LCV/LH, CKIBLDE, CKIB-LDE, CKIBLDN, CKIB-LDN, CKIBLDN/AP, CKIB-LDN/AP, CKIBLDN/LH, CKIB-LDN/LH, CKIBLDV, CKIB-LDV, CKIBLDV/AP, CKIB-LDV/AP, CKIBLDV/LH, CKIB-LDV/LH, CKIBLEE, CKIB-LEE, CKIBLEN, CKIB-LEN, CKIBLEN/AP, CKIB-LEN/AP, CKIBLEN/LH, CKIB-LEN/LH, CKIBLEV, CKIB-LEV, CKIBLEV/AP, CKIB-LEV/AP, CKIBLEV/LH, CKIB-LEV/LH, CKIBLFE, CKIB-LFE, CKIBLFN, CKIB-LFN, CKIBLFN/AP, CKIB-LFN/AP, CKIBLFN/LH, CKIB-LFN/LH, CKIBLFV, CKIB-LFV, CKIBLFV/AP, CKIB-LFV/AP, CKIBLFV/LH, CKIB-LFV/LH, CKIBLZE, CKIB-LZE, CKIBLZN, CKIB-LZN, CKIBLZN/AP, CKIB-LZN/AP, CKIBLZN/LH, CKIB-LZN/LH, CKIBLZV, CKIB-LZV, CKIBLZV/AP, CKIB-LZV/AP, CKIBLZV/LH, CKIB-LZV/LH, CKIBPAN, CKIB-PAN, CKIBPAV, CKIB-PAV, CKIBPBN, CKIB-PBN, CKIBPBV, CKIB-PBV, CKIBPCN, CKIB-PCN, CKIBPCV, CKIB-PCV, CKIBPDN, CKIB-PDN, CKIBPDV, CKIB-PDV, CKIBPEN, CKIB-PEN, CKIBPEV, CKIB-PEV, CKIBPFN, CKIB-PFN, CKIBPFV, CKIB-PFV, CKIBPZN, CKIB-PZN, CKIBPZV, CKIB-PZV, CKIBXAE, CKIB-XAE, CKIBXAN, CKIB-XAN, CKIBXAN/AP, CKIB-XAN/AP, CKIBXAN/LH, CKIB-XAN/LH, CKIBXAV, CKIB-XAV, CKIBXAV/AP, CKIB-XAV/AP, CKIBXAV/LH, CKIB-XAV/LH, CKIBXBE, CKIB-XBE, CKIBXBN, CKIB-XBN, CKIBXBN/AP, CKIB-XBN/AP, CKIBXBN/LH, CKIB-XBN/LH, CKIBXBV, CKIB-XBV, CKIBXBV/AP, CKIB-XBV/AP, CKIBXBV/LH, CKIB-XBV/LH, CKIBXCE, CKIB-XCE, CKIBXCN, CKIB-XCN, CKIBXCN/AP, CKIB-XCN/AP, CKIBXCN/LH, CKIB-XCN/LH, CKIBXCV, CKIB-XCV, CKIBXCV/AP, CKIB-XCV/AP, CKIBXCV/LH, CKIB-XCV/LH, CKIBXDE, CKIB-XDE, CKIBXDN, CKIB-XDN, CKIBXDN/AP, CKIB-XDN/AP, CKIBXDN/LH, CKIB-XDN/LH, CKIBXDV, CKIB-XDV, CKIBXDV/AP, CKIB-XDV/AP, CKIBXDV/LH, CKIB-XDV/LH, CKIBXEE, CKIB-XEE, CKIBXEN, CKIB-XEN, CKIBXEN/AP, CKIB-XEN/AP, CKIBXEN/LH, CKIB-XEN/LH, CKIBXEV, CKIB-XEV, CKIBXEV/AP, CKIB-XEV/AP, CKIBXEV/LH, CKIB-XEV/LH, CKIBXFE, CKIB-XFE, CKIBXFN, CKIB-XFN, CKIBXFN/AP, CKIB-XFN/AP, CKIBXFN/LH, CKIB-XFN/LH, CKIBXFV, CKIB-XFV, CKIBXFV/AP, CKIB-XFV/AP, CKIBXFV/LH, CKIB-XFV/LH, CKIBXZE, CKIB-XZE, CKIBXZN, CKIB-XZN, CKIBXZN/AP, CKIB-XZN/AP, CKIBXZN/LH, CKIB-XZN/LH, CKIBXZV, CKIB-XZV, CKIBXZV/AP, CKIB-XZV/AP, CKIBXZV/LH, CKIB-XZV/LH

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