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MODEL

DTAFS

FLeX Series 2-way, soft shift, solenoid-operated directional poppet valve - pilot

capacity

SERIES P / CAPACITY: 28 L/min. / CAVITY: T-8A

(C)POPPET CONFIGURATION

C Normally Closed

H Normally Open

(N)SEAL MATERIAL

N Buna-N

V Viton

COIL *

No coil

* Additional coil options are available

M-Control, C-Poppet

M-Control, H-Poppet

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

This FLeX Series, solenoid-operated 2-way, 2-position cartridge is a direct-acting directional poppet valve with a

soft shift feature. Available in either normally open or normally closed configurations, these valves feature a

pressure-balanced design, low leakage, and allow flow or blocking in both directions.

This cartridge can be installed directly into a cavity in the end of many of Sun's pilot operated and ventable valves

to provide integrated pilot control.

TECHNICAL DATA

Cavity T-8A

Series P

Capacity 28 L/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 0,07 cc/min.@350 bar

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

Viscosity Range 2,8 - 380 cSt

Valve Hex Size 22,2 mm

Valve Installation Torque 27 - 33 Nm

Seal kit - Cartridge Buna: 990608007

Seal kit - Cartridge Viton: 990608006

Seal and nut kit - Coil Viton: 990740006

Model Weight 0.18 kg.

sunhydraulics.com/model/

DTAFS

Model Code Example: DTAFSCNCONFIGURATION OPTIONS

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TECHNICAL FEATURES

The soft shift cartridge is interchangeable with the standard cartridge, however, the performance limits are lower.

The soft shift feature can reduce shock due to valve actuation but should not be counted upon in applications where timing is critical. If you need accurate ramping

or timing control, consider Sun's electro-proportional valves.

The soft shift feature results in an increase in response time over Sun's standard solenoid. Response time is dependent on flow, pressure, coil voltage, oil viscosity

and ambient temperature.

For consistent soft shift performance, port 1 should be at a positive pressure.

Cartridge can be installed directly into a cavity in some Sun pilot operated and ventable cartridges to provide electrically operated pilot control functions. Separate

pilot lines are eliminated and only one cavity needs to be machined to accommodate both the control and primary function.

Suitable for load-holding applications when configured as Normally Closed. In the event of power failure, the valve will close.

Designed and tested to 10-million operational cycles at full-rated pressure.

Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.

Higher flow rates than competing valves of similar size.

Designed using CFD simulation for optimized geometries.

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

Normally Closed configuration can be used with any of the 740 Series coils, which include low-power, high-power, and 747 Series explosion-proof coils. Normally

Open configuration can be used with the high-power and explosion proof coils only.

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

This valve is available with a manual push-type override option.

This valve exhibits extremely low leakage - 0.004 in3 (0,07 cc)/min (1 drop/min).

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

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

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

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RELATED MODELS

DTAF FLeX Series 2-way, direct-acting, solenoid-operated directional blocking poppet valve