Created on 12/07/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
DNDC
4-way, 3-position, solenoid-operated directional spool valve
SERIES 1 / CAPACITY: 20 L/min. / CAVITY: T-31A
C-Spool A-Spool
B-Spool H-Spool
R-Spool T-Spool
W-Spool Y-Spool
This direct acting, solenoid-operated, 4-way, 3-position spool valve is spring centered to the neutral position. When
coil A is energized, the flow is from port 3 (P) to port 2 (A) and from port 4 (B) to port 1 (T). When coil B is
energized, the flow is from port 3 to port 4 and from port 2 to port 1.
TECHNICAL DATA
Maximum Operating Pressure 350 bar
Response Time - Typical 50 ms
Maximum Valve Leakage at 110 SUS (24 cSt) 160 cc/min.@210 bar
Switching Frequency 15000 cycles/hr
Seal kit - Cartridge Buna: 990-431-007
Seal kit - Cartridge EPDM: 990-431-014
Seal kit - Cartridge Viton: 990-431-006
(X)CONTROL
X No Manual Override
(C)SPOOL CONFIGURATION
C Blocked Center
A A to T Center
B B to T Center
H Open Center
R Regen Center
T Tandem Center
W A and B Bleed to T Center
Y A and B to T Center
(N)SEAL MATERIAL
N Buna-N
E EPDM
V Viton
COIL *
No coil
212 DIN 43650 3 pin (Hirschman), 12 VDC
224 DIN 43650 3 pin (Hirschman), 24 VDC
712 Twin Lead, 12 VDC
724 Twin Lead, 24 VDC
912 Deutsch DT04-2P, 12 VDC
924 Deutsch DT04-2P, 24 VDC
* Additional coil options are available
snhy.com/
DNDC
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.
In differential flow circuits, the higher return flow should be directed through port 2 (A) to port 1 (T).
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.
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 are interchangeable with other Sun Series 1 solenoid products and can be mounted on the tube in either direction.
Coil connector options offer ratings up to IP69K. See individual coil product pages for details. Additional weatherized coils and kits are available for more complete
The two coils used in this assembly are interchangeable with one another, but once installed and wired, the coil closest to the hex body is considered Coil
A, and the coil closest to the coil nut is Coil B.
NOTES
Model Code Example: DNDCXCNCONFIGURATION OPTIONS
Created on 12/07/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
environmental protection.
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
RELATED ACCESSORIES
773-812 12 VDC weatherized coil with Metri-Pack, Series 150-2M connector
773-814 14 VDC weatherized coil with Metri-Pack, Series 150-2M connector
773-824 24 VDC weatherized coil with Metri-Pack, Series 150-2M connector
773-828 28 VDC weatherized coil with Metri-Pack, Series 150-2M connector
773-836 36 VDC weatherized coil with Metri-Pack, Series 150-2M connector
991-057 T-31A cavity, weatherized coil seal kit
