LLOHD-XDN
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A cartridge-style, vent-toopen, spring biased closed, unbalanced poppet logic element with pilot source from port ① or port ②
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Technical Feature
OPERATION:
These unbalanced, vent-to-open logic valves are 2-way switching elements that are
spring-biased closed and incorporate an integral shuttle so that the higher of pressures
at either port ① or port ② can be used as a pilot source. With port ③ blocked, the valve
is held in the closed position by the spring force. With port ③ vented, the valve will open
provided there is sufficient pressure to overcome the spring force. The force generated at
port ③ , plus the spring force, must be greater than the sum of the forces acting at port ①
and port ③ for the valve to remain closed. NOTE: The pilot area (port ③ ) is 1.8 times the
area at port ① and 2.25 times the area at port ② .
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PerformanceCurves
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Technical Data
Operating Pressure350barFlowSee PRESSURE DROP VS.FLOW graph.CavitySUN T-17AFiltrationRefer to "Cleanliness of Hydraulic Fluid"Internal Leakage10 drops/min. max.Temperature-40ºF to +250ºF(-40ºC to +120ºC)FluidsMineral-based fluids with viscosities of 7.4 to 420 cSt.Body MaterialSteel & Ductile iron rated to 350bar -
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