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2018 Sun Hydraulics Corporation 1 of 2
MODEL
DRBMX
2-way, direct-acting, fixed setting, directional valve with drain to
port 4 - normally open
SERIES 1 / CAPACITY: 28 L/min. / CAVITY: T-21A
(F)SHIFTING PRESSURE
F 100 psi (7 bar)
(N)SEAL MATERIAL
N Buna-N
V Viton
NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.
Normally open, direct-acting, 2-way directional cartridges are switching devices typically used
in moderate flow circuits. They can be used by themselves or to actuate larger pilot operated
directional cartridges or logic cartridges. The valve shifts when the pressure differential
between port 1 and port 4 exceeds the setting.
TECHNICAL DATA
Cavity T-21A
Series 1
Capacity 28 L/min.
Factory Pressure Settings Established at 15 L/min.
Maximum Operating Pressure 350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 30 cc/min.
Valve Hex Size 22,2 mm
Valve Installation Torque 41 - 47 Nm
Seal kit - Cartridge Buna: 990021007
Seal kit - Cartridge Polyurethane: 990021002
Seal kit - Cartridge Viton: 990021006
Model Weight 0.15 kg.
snhy.com/
DRBMX
Model Code Example: DRBMXFNCONFIGURATION OPTIONS
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2018 Sun Hydraulics Corporation 2 of 2
TECHNICAL FEATURES
Port 3 can be used as a work port.
The flow path between port 2 and port 3 is bidirectional.
Because of their direct-acting design, these cartridges feature low internal leakage and low pilot flow consumption.
Direct-acting and pilot-operated versions of these valves are interchangeable. They fit the same cavities and have the same flow
paths.
Pressure at port 4 is directly additive to the setting of the valve.
This valve is not bistable; it is capable of modulating between the two positions shown.
Maximum pressure at port 3 should be limited to 3000 psi (210 bar). This is due to fatigue strength limits not hydraulic operating limits.
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 MODELS
DRBM 2-way, direct-acting, directional valve with drain to port 4 - normally open
