Created on 03/07/2016
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2016 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 1
MODEL
LHDA
Bypass/restrictive, priority modulating element
SERIES 1 / CAPACITY: 60 L/min. / CAVITY: T-31A
Bypass/restrictive modulating elements, when combined with an external orifice, create a bypass/restrictive flow
control. Input flow (port 3) is directed to the priority or control flow at port 2. Once the priority requirements are met,
excess flow is bypassed out port 4. The after-orifice signal is connected to port 1. The before-orifice design allows
both pressure and flow to be controlled on the priority side of the circuit regardless of pressure in the bypass circuit.
These valves work equally well in either closed or open center systems. Their main use is to allow after-market
accessories to be driven off the host machine's hydraulic system without adding an additional pump.
TECHNICAL DATA
Maximum Operating Pressure 350 bar
Seal kit - Cartridge Buna: 990-031-007
Seal kit - Cartridge Polyurethane: 990-031-002
Seal kit - Cartridge Viton: 990-031-006
(X)CONTROL
X Not Adjustable
(F)DIFFERENTIAL PRESSURE
F 100 psi (7 bar)
E 75 psi (5 bar)
(N)SEAL MATERIAL
N Buna-N
E EPDM
V Viton
snhy.com/
LHDA
TECHNICAL FEATURES
Bypass flow is not available until priority flow requirements are satisfied.
Priority flow can be turned on or off with a pilot sized solenoid valve on port 1.
Bypass pressure at port 4 can be higher than pressure at control port 2.
Cartridges with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
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.
Model Code Example: LHDAXFNCONFIGURATION OPTIONS
