E-LOFC Pilot-to-close, spring-biased closed, unbalanced poppet logic element
SYMBOL
DESCRIPTION
The E-LOFC is a is a pilot-to-close, spring-biased closed, unbalanced poppet logic element.
OPERATION
These unbalanced, pilot-to-close logic valves are 2-way switching elements that are spring biased closed. Pressure at either work port 1 or 2 will oppose the spring and tend to open the valve while pressure at port 3 will tend to close it. 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.
FEATURES:
l These valves have positive seals between port 2 and the pilot area.
l 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%.
l All ports will accept 5000 psi (350 bar).
SPECIFICATIONS:
Working Pressure: 350 bar (5000 psi)
Flow Rating: 380 L/min (50 gpm)
Maximum Internal Leakage: 10 drops/min.at 110 SUS (24 cSt)
Temperature Range: - 30 °C to +120 °C (- 22 °C F to + 250 °C F)
Fluids: Mineral based fluids with viscosities of 7.4 to 420 cSt (50 to 2000 ssu)
Cavity: T-2A
PERFORMANCE:
DIMENSIONS:
ORDER CODE:
AAK Hydraulic Valve is a top manufacturer for Hydraulic Cartridge Directional Control Valves in Ningbo China since 2009.
We guarantee quality for 3 years for non-standard customized valves: No leakage, No Noise, No Vibration.
Contact us to customize your valves and promote your business with our premium quality!
