PRECISION DISPENSING PUMPS

PRECISION DISPENSING PUMPS / SINGLE PILOT MODEL APSRR / VAPSRT Precision dispensing pumps model incorporates a 4-way Single Pressure Pilot Valve. A continuous pilot pressure applied to "IN" side of valve will move the piston its full stroke. When the pilot pressure is released, the piston will return to its original position. Pilot pressure is normally supplied through a 3-way N.C. Valve. Model is supplied with the rod normally retracted (pilot pressure to extend rod) pilot pressure must be at least 75% of the operating pressure.	Fig. Model APSRR / VAPSRT(Precision Dispensing Pumps)

PRECISION DISPENSING PUMPS / SINGLE PILOT MODEL VARR / VSAT (AUTOMATIC RETURN) Precision dispensing pumps model incorporates a 4-way Double Bleed Pilot Valve. A momentary (NOT continuous) actuation of a Bleeder Valve is required to move the piston Its full stroke. Upon reaching its FULL stroke, the piston will automatically return to its original position. This model is supplied with the rod normally retracted (manual bleed to extend rod) Due to internal construction and application requirements, there can be a loss of approximately 1/8" to 1/4" of stroke. Bleeder Valve Model BV100 is supplied on these models.	Fig. Model VARR / VSAT (AUTOMATIC RETURN)(Precision Dispensing Pumps)

PRECISION DISPENSING PUMPS / DOUBLE PILOT MODEL AP / VAPT Precision dispensing pumps model incorporates a 4-way Double Pressure Pilot Valve. A momentary or maintained pilot pressure applied to one side of the valve will move the rod its full stroke. The piston will remain in that position under pressure until a pilot pressure is released and applied to the other side, which will cause the piston to return to its original position. If a maintained pilot pressure is applied, it must be released before the other pilot pressure is applied. Pilot pressure must be at least 25% of the operating pressure.	Fig. Model AP / VAPT(Precision Dispensing Pumps)
Pneumatically controlled(explosion proof) air or gas operators (see Allenair.com) may be used on Allenair's air operated pumps, direct acting pumps and industrial dispensing pumps to control all of Allenair's self priming pumps.Self contained bleed screws control the speed of Allenair's piston pumps aiding in the positive displacement pumps output.Because of the wide range of Allenair's power pumps cylinder bore sizes(1-1/2" to 4"), heavy viscous liquid pumps have the power for the precision dispensing pumps of peanut butter,heavy crude oil,toothpaste or lard. For more information Precision Dispensing model
HALL EFFECT SWITCHES (CSA "NRTL/C" Listed): ALLENAIR Hall Effect switches are designed to be used with our 1-1/2" thru 4" bore Pumps. The Pumps must be ordered with the "RM" option. All switches have an LED indicator light, nine (9) foot leads, and an operating temperature range of - 22°F to +176 °F.

NOTES: 1) PNP output is Sourcing 2) NPN output is Sinking All models require a mounting strap purchased as a separate item based on the pump bore size.