Pneumatic And Hydraulic Equipment Page 589

These 125 and 250 series valves are "super-sensitive" pilot-operated valves for operation at ultra-low pilot pressures. 125LA Super-sensitive pilot operated interface valve for operation at ultra-low pilot pressures. See Pilot Pressure Requirements Chart. A 125LA valve has a full 0.125-inch orifice. The pilot diaphragm chamber volume is 0.011 cubic inches when the diaphragm has moved its 0.015-inch stroke; provides for rapid response. 125AH Sensitive pilot operated interface valve for operation at low pilot pressures. See Pilot Pressure Requirements Chart. A 125AH valve has a full 0.125-inch orifice. The pilot diaphragm chamber volume is 0.011 cubic inches when the diaphragm has moved its 0.015-inch stroke; provides for rapid response. 250AL Super-sensitive pilot operated interface valve for operation at the ultra-low pilot pressures encountered in jet sensing and some fluidic applications. See Pilot Pressure Requirements Chart. A 250AL valve has a full 0.250-inch orifice. 250AH Sensitive pilot operated interface valve for operation at the low pilot pressures encountered in jet sensing and some fluidic applications. See Pilot Pressure Requirement Chart. A 250AH valve has a full 0.250-inch orifice. Part No. Port Size Price 250AL-3-10-21 1/4" $97.52 250AH-3-10-21 1/4" $97.52 INTERFACE VALVES LOW PILOT PRESSURE - AIR PILOT VALVES Pilot Pressure Requirements Minimum pilot pressures to open the valve at valved pressures of MAXIMUM HYSTER- MODEL PILOT ESIS 30 PSIG (Minimum) 80 PSIG 125 PSIG (Maximum) 125LA* 30 psig 20% A .4 B .8 C 1.2 A .4 B 1.2 C 1.7 A .6 B 1.8 C2.0 125AH 10 psig 30% 9 in. of water col. 9 in. of water col. *The speed at which the pilot signal is delivered to the valve is noted as, SLOWLY APPLIED PILOT SIGNALS (as some liquid level sensing applications)- A- At this minimum pressure the valve will start to open, thus connecting all ports (IN-CYL-EXH) until B-At this minimum pressure the valve is fuly open. RAPIDLY APPLIED PILOT SIGNALS- C-At this minimum pressure the valve if fully open. Once the valve is open, the valve will close when the minimum pilot pressure is reduced by the percentage shown. Air Flow to Atmosphere Weight 25 PSIG 125 PSIG ACTUAL MODEL CFM CFM LBS 125LA 3.6 18.0 0.24 125AH Pilot Pressure Requirements Minimum pilot pressures to open the valve at valved pressures of MAXIMUM HYSTER- MODEL PILOT ESIS 30 PSIG (Minimum) 80 PSIG 125 PSIG (Maximum) 250LA 10 psig 30% .8 in. of water col. 1.2 in. of water col. 2.1 in. of water col. 250AH 30 psig 30% 9 in. of water col. 9 in. of water col. Once the valve is opne, the valve will close when the minimum pilot pressure is reduced by the percentage shown. Air Flow to Atmosphere Weight 25 PSIG 125 PSIG ACTUAL MODEL CFM CFM LBS 250AL 16.0 40.0 0.77 250AH Part No. Port Size Price 125LA-3-10-21 1/8" $71.84 125AH-3-10-21 1/8" $64.56 H U M P H R E Y Humphrey JHF Catalog [ Volume 7 ] (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j hf.com 589 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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