Created on 12/14/2016

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

MODEL

CCIA

Standard capacity counterbalance valve without pilot assist

SERIES 4 / CAPACITY: 480 L/min. / CAVITY: T-19A

Counterbalance valves without pilot assist are meant to control an overrunning load. The check valve allows free

flow from the directional valve (port 2) to the load (port 1) while a direct-acting relief valve controls flow from port 1

to port 2.

TECHNICAL DATA

Cavity T-19A

Series 4

Capacity 480 L/min.

Pilot Ratio Zero

Maximum Recommended Load Pressure at Maximum Setting 215 bar

Maximum Setting 280 bar

Factory Pressure Settings Established at 30 cc/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at Reseat 0,3 cc/min.

Adjustment - Number of Counterclockwise Turns to Increase Setting 3.75

Operating Characteristic Standard

Reseat >85% of setting

Valve Hex Size 41,3 mm

Valve Installation Torque 474 - 508 Nm

Adjustment Screw Internal Hex Size 5,5 mm

Locknut Hex Size 19,1 mm

Locknut Torque 35 - 40 Nm

Seal kit - Cartridge Buna: 990019007

Seal kit - Cartridge Polyurethane: 990019002

Seal kit - Cartridge Viton: 990019006

Model Weight 1.36 kg.

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CCIA

Created on 12/14/2016

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

(L)CONTROL

L Standard Screw Adjustment

C Tamper Resistant - Factory Set

(H)FUNCTIONAL SETTING RANGE

H 1000 - 4000 psi w/25 psi Check (70 -

280 bar w/ 1,7 bar Check), 3000 psi

(210 bar) Standard Setting

A 1000 - 4000 psi w/4 psi Check (70 -

280 bar w/ 0,3 bar Check), 3000 psi

(210 bar) Standard Setting

B 400 - 1500 psi w/4 psi Check (28 - 105

bar w/ 0,3 bar Check), 1000 psi (70

bar) Standard Setting

I 400 - 1500 psi w/25 psi Check (28 -

105 bar w/ 1,7 bar Check), 1000 psi (70

bar) Standard Setting

(N)SEAL MATERIAL

N Buna-N

V Viton

TECHNICAL FEATURES

Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.

Turn adjustment clockwise to decrease setting and release load.

Full clockwise setting is less than 200 psi (14 bar).

These valves are modified versions of our pilot assisted counterbalance valves. The pilot assist area has been nullified internally. There is no connection to port 3.

Backpressure at port 2 is directly additive to the relief setting of the valve.

Lower pilot ratios (pilot gain) promote machine stability. This valve has a pilot ratio of zero. Stability is gained at the expense of efficiency.

Reseat exceeds 85% of set pressure when the valve is standard set. Settings lower than the standard set pressure may result in lower reseat percentages.

Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit.

Two check valve cracking pressures are available. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern.

All 3-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size).

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: CCIALHNCONFIGURATION OPTIONS