Created on 12/08/2016

 2016 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2

MODEL

CKCC

Pilot-to-open check valve with sealed pilot and Delrin seat

SERIES 1 / CAPACITY: 60 L/min. / CAVITY: T-11A

This valve is a pilot to open check valve. It has a sealed pilot, a Delrin 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

Cavity T-11A

Series 1

Capacity 60 L/min.

Pilot Ratio 3:1

Maximum Operating Pressure 175 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 0,07 cc/min.

Valve Hex Size 22,2 mm

Valve Installation Torque 41 - 47 Nm

Seal kit - Cartridge Buna: 990011007

Seal kit - Cartridge Polyurethane: 990011002

Seal kit - Cartridge Viton: 990011006

Model Weight 0.13 kg.

(X)CONTROL

X Standard Pilot

L Manual Load Release

(C)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)

(N)SEAL MATERIAL

N Buna-N

V Viton

snhy.com/

CKCC

Model Code Example: CKCCXCNCONFIGURATION OPTIONS

Created on 12/08/2016

 2016 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2

TECHNICAL FEATURES

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.

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.

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.

The Delrin seat is suitable for dirty, medium pressure systems that are not subjected to high flows or temperatures.

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.

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

RELATED MODELS

CKCCS Vented pilot-to-open check valve with SAE-4 external pilot port, sealed pilot, and Delrin seat

CKCCV Vented pilot-to-open check valve with 1/4 NPTF external pilot port, sealed pilot, and Delrin seat