Created on 06/29/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
DSIH
Low side, 3-position, hot oil shuttle valve
SERIES 4 / CAPACITY: 320 L/min. / CAVITY: T-34A
Low-side (hot oil) shuttle cartridges allow hot oil to be diverted from the low pressure side of a closed loop system.
When both work ports (ports 2 and 4) are at equal pressures the valve is spring-centered to an all-ports-blocked
position. When one of the work ports (port 2 or 4) sees a higher pressure the opposite work port is connected to
the common port (port 3).
TECHNICAL DATA
Maximum Operating Pressure 350 bar
Pilot Flow 0,75 L/min.
Seal kit - Cartridge Buna: 990-034-007
Seal kit - Cartridge Polyurethane: 990-034-002
Seal kit - Cartridge Viton: 990-034-006
(X)CONTROL
X Not Adjustable
(H)SHIFTING PRESSURE
H 200 psi (14 bar)
G 150 psi (10,5 bar)
(N)SEAL MATERIAL
N Buna-N
V Viton
snhy.com/DSIH
TECHNICAL FEATURES
The spool incorporates a hydraulic stop that eliminates mechanical impact and therefore the potential for internal damage.
The hydraulic stop results in a small pilot flow from the high side work port (port 2 or 4) to the common port (port 3).
A unique feature due to the hydraulic stop is that the hot oil relief setting can be confirmed with the transmission in neutral.
NOTE: Low shift values can potentially result in charge pump pressure alone inadvertently shifting the valve. Use care when selecting shift pressure.
Although this valve goes into a 4-port cavity, the nose (port 1) is not used.
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: DSIHXHNCONFIGURATION OPTIONS
Created on 06/29/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
