MODEL
DCDF
4-way, 2-position, pilot-to-shift directional valve
SERIES 2 / CAPACITY: 38 - 120 L/min. / CAVITY: T-62A
X-Control, X-Spool X-Control, A-Spool
X-Control, B-Spool X-Control, C-Spool
X-Control, H-Spool X-Control, R-Spool
X-Control, T-Spool X-Control, W-Spool
X-Control, Y-Spool
Two-position, 4-way directional cartridges are spring-offset, 6-port directional valves that can be configured from a
choice of 9 different 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
Minimum Pilot Pressure Required to Shift Valve 10,5 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 30 cc/min.@70 bar
Pilot Volume Displacement 0,98 cc
Seal kit - Cartridge Buna: 990-062-007
Seal kit - Cartridge Polyurethane: 990-062-002
Seal kit - Cartridge Viton: 990-062-006
(X)CONTROL
X Not Adjustable
(X)SPOOL CONFIGURATION
X P to B and A to T Center
A A to T Center
B B to T Center
C Blocked Crossover
H Open Crossover
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
snhy.com/
DCDF
TECHNICAL FEATURES
All ports will accept 5000 psi (350 bar), including the x and y pilot ports (port 5 and port 6).
The reason for the different capacities, or performance limits, for the different spool configurations are flow forces. Flow forces are proportional to flow and pressure
drop. Typically, they resist the opening of a passage. Spool configurations that open passages as they spring center are the most susceptible. If the flow forces due
to the flow and pressure conditions exceed the centering spring force the valve may not shift completely. Higher flows may be used at lower pressures.
Leakage listed in technical data is for each path.
The pilot ports, 5 and 6, are positively sealed from the work ports.
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.
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
Model Code Example: DCDFXXNCONFIGURATION OPTIONS