©2017 Sun Hydraulics Corporation2 www.sunhydraulics.com
FLeX Series
1
z All FLeX Series valves incorporate the Sun oating-style construction to minimize the possibility of internal
parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
z Designed and tested to 10 million on-o operational cycles.
z Meets new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
z Higher ow rates than competing valves of similar size.
z Extremely low leakage ‒ 0.004 in
3
(0.07 cc
3
)/min (1 drop/min)
z Designed using CFD uid simulation for optimized geometries.
z Zinc-nickel plating standard for 1000-hour salt fog protection.
z Direct actuated and requires no minimum hydraulic pressure for operation.
z Can be used to pilot larger Sun cartridge valves that have an integral T-8A control cavity.
z Available with a manual push-version override option.
z Suitable for load-holding applications when using the normally closed option. In the event of power failure,
the valve will close.
z A wide variety of coil termination and voltage options are available, with and without surge protection. See
the CONFIGURATION section.
z Normally closed DTAF valves can be used with any of the FLeX coils, which includes low-power, high-power
and explosion-proof coils. Normally open DTAF valves can be used with the high-power and explosion-
proof coils.
z Coil connector options oer ratings up to IP69K. See individual coil product pages for details.
TECHNICAL FEATURESS
DTAF
SERIES P, CAVITY: T-8A2WAY, DIRECTACTING, SOLENOIDOPERATED
DIRECTIONAL BLOCKING POPPET VALVE
The 2/2 directional poppet valves are direct acting and feature
a pressure-balanced design. Both ports can be loaded with an
operating pressure up to 5000 psi (350 bar). They comprise a
hex body (3), solenoid with coil (2), poppet (5), pin (4), spring
(6), and coil nut (1).
DTAF-*H* (normally open)
Function: When the coil (2) is de-energized, the spring (6)
holds the poppet (5) away from the seat (3), allowing bi-direc-
tional ow. When energized, the poppet is pushed into the
seat by the solenoid, and the valve is closed, blocking ow.
TECHNICAL FEATURES
DTAF-*C* (normally closed)
Function: When de-energized, the poppet (5) is pulled
against the valve seat (3) by the spring (6), closing the valve
and blocking ow. When energized, the solenoid with coil (2)
pushes the poppet o the seat and opens the valve, allowing
bi-directional ow.
2
3
5
4
6
2
PORT
PORT
1
2
3
5
4
6
2
PORT
PORT
1
1