Category:

Cartridge valve

Special function valve

液控逻辑阀


MLOFA


Features These valves have positive seals between port 2 and the pilot area Because these valves are unbalanced, operation is pressure dependent. Opening and closing of the poppet are functions of the force balances on three areas: Port 1 = 100%, Port 2 = 80%, and the Pilot Area = 180%. All ports will accept 5000 psi (350 bar)


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Product Details


MLOFAMLOFA

Specifications
Operating Pressure 350BAR
Flow 200L/min
Internal Leakage 0.7 ml/min.max.at 24cst
Temperature -30°C to +120°(-22°F to+250°F)
Area Ratio 3 to 11.81
3 to 22.251
Cavity T-2A see page K-1
Fluids Mineral-based fluids with viscosities of 7.4 to 420 cSt.
Features
These valves have positive seals between port 2 and the pilot area
Because these valves are unbalanced, operation is pressure
dependent. Opening and closing of the poppet are functions of the
force balances on three areas: Port 1 = 100%, Port 2 = 80%, and
the Pilot Area = 180%.
All ports will accept 5000 psi (350 bar)
Operation
These unbalanced, vent-to-open logic valves are 2-way switching elements
that are spring-biased closed and have port 1 as a pilot source. With port 3
blocked, the valve will remain in the closed position in the 1 to 2 direction and
will function as a check valve from 2 to 1. 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 2 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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