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LARGE ELECTRONICALLY ADJUSTABLE PROPORTIONAL PRESSURE COMPENSATED FLOW CONTROL ?LEFC?

LARGE ELECTRONICALLY ADJUSTABLE PROPORTIONAL PRESSURE COMPENSATED FLOW CONTROL ?LEFC?
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LARGE ELECTRONICALLY ADJUSTABLE PROPORTIONAL PRESSURE COMPENSATED FLOW CONTROL ?LEFC? - 1

ISO 9001:2008 WITH DESIGN Certificate #02.002.1 LARGE ELECTRONICALLY ADJUSTABLE PROPORTIONAL PRESSURE COMPENSATED FLOW CONTROL “LEFC” CONTROLLED FLOW (CF) EXCESS FLOW (EX) TANK (10 PSI MAX BACK PRESSURE) INLET (IN) FEATURES: PRECISION GROUND HEAT TREATED SPOOL that assures long life. DIAMOND HONED SPOOL BORE provides consistent spool fit with low leakage. EVERY LEFC IS TESTED for linearity and pressure compensation. STANDARD 3-PORT allows for pressure compensated flow out of two ports. OPTIONAL MANUAL OVERRIDE when electrical power is lost. SPECIFICATIONS: MATERIALS: See flow chart for capacity. Max. 3000 psi cartridge input pressure. Nominally Rated for 3000 psi (207 bar). Tank Port - #4 SAE (10 psi (0.69 bar) MAX. back pressure) Weight 32–3/4 lbs. (14.9 kg). 25-Micron Filtration or Better. Coil 12 VDC standard. 10.4 Ohms. 14 Watts. 1.15Amp max. Rated 100% continuous duty cycle Pulse Frequency (90 to 110 Hz) Operating Temperature: -20 to 210F (-30 to 100C) 05-10 Cast Iron Body. Heat Treated Steel Spools. Buna N O’Rings. Page B-15

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LARGE ELECTRONICALLY ADJUSTABLE PROPORTIONAL PRESSURE COMPENSATED FLOW CONTROL ?LEFC? - 2

Electric Flow Control LEFC – GENERAL INFORMATION The Brand, LEFC (large electronically adjustable proportional pressure compensated flow control) is an electronically controlled version of the original large FC51 style flow control valve. The LEFC performance as a flow control is very similar to the large FC51 because they both use the same spring and compensator spool. Thus, the control flow port (CF) and the excess flow port (EX) remain usable and pressure compensated. The main advantage of the LEFC over the large FC51 is that the flow can be adjusted proportionally with a solenoid...

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LARGE ELECTRONICALLY ADJUSTABLE PROPORTIONAL PRESSURE COMPENSATED FLOW CONTROL ?LEFC? - 3

Electric Flow Control LEFC FLOW & PRESSURE INFO: Controlled Flow vs. Solenoid Current Current vs. Dial Plate for EC-12-01, EC-12-01L, and EC-12-02 246 227 208 189 170 151 132 114 95 76 57 38 19 0 55 gpm Valve with 60 gpm Input 45 gpm Valve with 50 gpm Input 0.35 0.45 0.55 0.65 Solenoid Current (amps) 0.75 Readings may vary slightly for every control and valve combination. Data taken using EC-12-01 and LEFC coil. 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 0 0.85 30 40 50 60 70 Dial Plate (Percent) 80 90 100 3.4 40 2.8 30 2.1 Excess Flow 1.4 10 0.7 0 38 76 114 Flow (lpm) 151 189 227 265 303...

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LARGE ELECTRONICALLY ADJUSTABLE PROPORTIONAL PRESSURE COMPENSATED FLOW CONTROL ?LEFC? - 4

Electric Flow Control DIMENSIONAL DATA: CONTROL FLOW EXCESS FLOW 1" x 1" [25.4 x 35.4] (8 PLACES) MOUNTING PADS Ø11/32 [8.7] THRU (4 PLACES) EX CF 3.17" [80.5] 1.32" [33.6] 6.01" [152.5] #4 SAE TANK PORT (10 PSI MAX BACK PRESSURE) 5.38" [136.6] IN INLET MANUAL OVERRIDE 6.63" [168.3] REF. 8.44" [214.4] Page B-18 3.00" [76.3] 7.50" [190.4]

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