 2024 Sun Hydraulics 1 of 4

MODEL

DBAF

3-way solenoid-operated directional spool valve - pilot capacity (740 Series)

SERIES P / CAPACITY: 1 L/min. / CAVITY: T-9A

X-Control, H-Spool X-Control, C-Spool

M-Control, C-Spool M-Control, H-Spool

D-Control, C-Spool D-Control, H Spool

L-Control, C-Spool L-Control, H-Spool

T-Control, C-Spool T-Control, H-Spool

NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.

This solenoid-operated 3-way, 2-position cartridge is a direct-acting, balanced spool pilot valve used to pilot other

full-flow valves. The valve is normally open between port 1 and port 2 or port 1 and port 3 and all flow paths are

bidirectional.

This valve is designed to be used with 740 and 747 Series coils.

TECHNICAL DATA

Cavity T-9A

Series P

Capacity 1 L/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 0,7 cc/min.@350 bar

Manual Override Force Requirement 66 N/100 bar @ Port 1

Manual Override Stroke 2,5 mm

Response Time - Typical 50 ms

Switching Frequency 15,000 max. cycles/hr

Solenoid Tube Diameter 16 mm

Valve Hex Size 22,2 mm

Valve Installation Torque 27 - 33 Nm

Seal kit - Cartridge Buna: 990009007

Seal kit - Cartridge EPDM: 990009014

Seal kit - Cartridge Polyurethane: 990009002

Seal kit - Cartridge Viton: 990009006

Model Weight 0.20 kg.

sunhydraulics.com/model/

DBAF

NOTES

Please verify cartridge clearance requirements when choosing a Sun manifold. Different valve controls and coils require different clearances.

An additional 2.00 inches (50,8 mm) beyond the valve extension is needed for coil installation and removal.

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(X)CONTROL

X No Manual Override

D Twist/Lock (Dual) Manual Override

L Twist/Lock (Detent) Manual Override

M Manual Override (Standard)

T Twist (Momentary) Manual Override

(H)SPOOL CONFIGURATION

H Normally Open

C Normally Closed

(N)SEAL MATERIAL

N Buna-N

E EPDM

V Viton

COIL *

No coil

* Additional coil options are available

TECHNICAL FEATURES

The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service.

This valve is direct actuated and requires no minimum hydraulic pressure for operation.

Valves exhibit extremely low leakage rates; less than 10 drops/min. @ 5000 psi (0,7 cc/min @ 350 bar).

This cartridge utilizes 740 Series low-power and high-power coils, and 747 Series hazardous location coils for both Normally Open and Normally Closed

configurations.

This cartridge has an option for manual override. See the CONFIGURATION section.

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.

All configurations of this valve include zinc-nickel plating as standard for 1000-hour salt fog protection.

Coil connector options offer ratings up to IP69K. See individual coil product pages for details.

On models equipped with the D or L control, the detent mechanism in the manual override is meant for temporary actuation. The D, L and T manual control

assemblies have a mechanical life expectancy of approximately 7,000 cycles.

A FULL DATA SHEET is available for this model using the link at the top of the page.

This valve utilizes a wet armature design. This means that the working fluid surrounds the armature and is exposed to the heat generated by the coil. This can be a

factor if the coil is energized for long periods of time. Some fluids, notably water/glycol mixtures, break down at these temperatures over time and form varnishes

that will affect the function of the cartridge.

A wide variety of coil termination and voltage options are available, with and without surge protection. See the CONFIGURATION section.

Coils can be mounted on the tube in either direction.

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: DBAFXHNCONFIGURATION OPTIONS

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RELATED MODELS

DBAFS 3-way, soft shift, solenoid-operated directional spool valve - pilot capacity (740 Series)