 2020 Sun Hydraulics 1 of 4

MODEL

DLDF

2-way, solenoid-operated directional spool valve (740 Series)

SERIES 1 / CAPACITY: 45 L/min. / CAVITY: T-13A

(X)CONTROL

X No Manual Override

D Twist/Lock (Dual) Manual Override

L Manual Override - Adjustable

M Manual Override

T Twist (Momentary) Manual Override

(C)SPOOL CONFIGURATION

C Normally Closed

H Normally Open

(N)SEAL MATERIAL

N Buna-N

E EPDM

V Viton

COIL *

No coil

* Additional coil options are available

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

D-Control, C-Spool

D-Control, H-Spool

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

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

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

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

This solenoid-operated 2-way, 2-position cartridge is a direct-acting, balanced spool directional valve. The valve is

available in either a normally open or normally closed configuration and is designed to be used with 740 and 747

Series coils.

TECHNICAL DATA

Cavity T-13A

Series 1

Capacity 45 L/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 80 cc/min.@210 bar

Manual Override Force Requirement 33 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 41 - 47 Nm

Seal kit - Cartridge Buna: 990413007

Seal kit - Cartridge Viton: 990413006

Model Weight 0.24 kg.

sunhydraulics.com/model/

DLDF

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

NOTES

Model Code Example: DLDFXCNCONFIGURATION OPTIONS

 2020 Sun Hydraulics 2 of 4

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.

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.

This cartridge utilizes both 740 Series high-power and 747 Series hazardous location coils.

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

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.

The solenoid's unique magnetic design results in a high efficiency solenoid, yielding high spool actuating force per Watt expended, leading to reliable valve shifting.

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

 2020 Sun Hydraulics 3 of 4

 2020 Sun Hydraulics 4 of 4

RELATED MODELS

DLDFS 2-way, soft shift, solenoid-operated directional spool valve (740 Series)