MODEL
MWGG
Vented, 4.5:1 pilot ratio, load reactive, load control valve
SERIES 3 / CAPACITY: 240 L/min. / CAVITY: T-23A
4-Port Vented
Vented, load reactive load control valves with pilot assist combine two valves; a check valve and a relief valve. The
check valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-acting, pilot-
assisted relief valve controls flow from port 1 to port 2. Pilot assist at port 3 lowers the effective setting of the relief
valve at a rate determined by the pilot ratio. Backpressure at port 2 does not affect the valve setting because the
spring chamber references the vent (port 4).
TECHNICAL DATA
Pilot Ratio 4.5:1
Maximum Recommended Load Pressure at Maximum Setting 260 bar
Maximum Setting 350 bar
Factory Pressure Settings Established at 30 cc/min.
Maximum Valve Leakage at Reseat 0,3 cc/min.
Check Cracking Pressure 1,7 bar
Adjustment - Number of Counterclockwise Turns to Increase Setting 9
Reseat >85% of setting
Seal kit - Cartridge Buna: 990-023-007
Seal kit - Cartridge Polyurethane: 990-023-002
Seal kit - Cartridge Viton: 990-023-006
(L)CONTROL
L Standard Screw Adjustment
(H)FUNCTIONAL SETTING RANGE
H 1000 - 4000 psi (70 - 280 bar), 3000 psi
(210 bar) Standard Setting
J 2000 - 5000 psi (140 - 350 bar), 3000 psi
(210 bar) Standard Setting
(N)SEAL MATERIAL
N Buna-N
V Viton
snhy.com/MWGG
TECHNICAL FEATURES
Set at least 1.3 times the maximum load induced pressure (1.5 times when the setting is less than 2000 psi or 140 bar).
Turn adjustment clockwise to decrease setting and release load.
Full clockwise setting is 1000 psi (70 bar) for the H range and 2000 psi (140 bar) for the J range.
These valves are capable of modulating over a broader range of flows than the pure poppet designs. The longer stroke allows us to incorporate a uni-directional
damping device that smooths the opening and lets the valve close quickly.
This valve is functionally a 4 port counterbalance valve. It seats as a poppet valve and modulates as a spool valve offering the best of both worlds.
All 4-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size).
Model Code Example: MWGGLHNCONFIGURATION OPTIONS