Created on 08/15/2016

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

MODEL

DAAH

2-way, hydraulically-operated, spool directional valve - pilot capacity

SERIES P / CAPACITY: 1 L/min. / CAVITY: T-8A

C-Spool

H-Spool

These pilot-stage, directional, 2-position, 2-way valves are hydraulically operated, spring-return cartridges and are

available in either a normally open or normally closed configuration. These cartridges are designed for pilot flow

applications and utilize Sun's T-8A cavity so they can be used in conjunction with Sun's pilot-operated, main-stage

valves.

TECHNICAL DATA

Cavity T-8A

Series P

Capacity 1 L/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 0,3 cc/min.

Minimum Pilot Pressure to Operate See Technical Features

Pilot Control Port See Control Options

Valve Hex Size 22,2 mm

Valve Installation Torque 27 - 33 Nm

Seal kit - Cartridge Buna: 990-508-007

Seal kit - Cartridge Viton: 990-508-006

(B)CONTROL

B External 4-SAE Port

A External 1/8 NPTF Port

D External 1/8 BSPP Port

(C)SPOOL CONFIGURATION

C Normally Closed

H Normally Open

(N)SEAL MATERIAL

N Buna-N

V Viton

MATERIAL/COATING

Standard Material/Coating

/AP Stainless Steel, Passivated

snhy.com/DAAH

TECHNICAL FEATURES

Utilizes the Sun T-8A 2-port cavity making it the ideal choice to use in conjunction with Sun's main stage pilot or vent-to-operate cartridges. Separate pilot lines are

eliminated and only one cavity needs to be machined to accommodate both the control and primary function. Note: All 2-position, 2-way pilot stage control

cartridges utilize the same cavity and are physically interchangeable. Functionality is the only consideration.

Note: The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required

torque value.

The preferred flow path through the valve is port 2 to port 1.

Different pilot control port options are available. See Option Selection for details.

All ports will accept 5000 psi (350 bar) including the pilot control port.

Hardened spool and sleeve provide consistent operation, low spool leakage rates and superior wear characteristics.

The minimum pilot pressure required to operate the valve is determined by the following formula: pilot pressure = 85 psi + pressure @ Port 1 times .023. This results

in a pilot pressure range of 85 to 200 psi. In metric; pilot pressure = 6 bar + pressure @ Port 1 times 0,023. This results in a pilot pressure of 6 to 14 bar.

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.

Model Code Example: DAAHBCNCONFIGURATION OPTIONS