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MODEL
DDHC
4-way, 3-position, pilot-to-shift directional valve
SERIES 4 / CAPACITY: 320 L/min. / CAVITY: T-54A
(X)CONTROL
X Not Adjustable
(C)SPOOL CONFIGURATION
C Blocked Center
B B to T Center
D Blocked Center, Regen, P to B and A to
T
H Open Center
R Regen Center
T Tandem Center
W A and B Bleed to T Center, Restrictive
Y A and B Bleed to T Center
(N)SEAL MATERIAL
N Buna-N
V Viton
C-Spool B-Spool
D-Spool
H-Spool
R-Spool T-Spool
W-Spool Y-Spool
NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.
Three-position, 4-way directional cartridges are spring-centered, 6-port directional valves that can be configured
from a choice of spool options. The supply port is port 3 and all ports will accept 5000 psi (350 bar). Capacity for
these pilot-to-shift valves is dependent on the spool type specified.
TECHNICAL DATA
Cavity T-54A
Series 4
Capacity 320 L/min.
Minimum Pilot Pressure Required to Shift Valve 14 bar
Maximum Operating Pressure 350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 80 cc/min.@70 bar
Pilot Volume Displacement 4,3 cc
Valve Hex Size 41,3 mm
Valve Installation Torque 474 - 508 Nm
Seal kit - Cartridge Buna: 990054007
Seal kit - Cartridge Viton: 990054006
Model Weight 2.47 kg.
snhy.com/
DDHC
Model Code Example: DDHCXCNCONFIGURATION OPTIONS
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TECHNICAL FEATURES
All ports will accept 5000 psi (350 bar), including the x and y pilot ports (port 5 and port 6).
Leakage listed in technical data is for each path.
Hardened spool and sleeve provide consistent and low spool leakage rates and excellent wear characteristics.
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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