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.
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Fig. Model APSRR / VAPSRT(Precision
Dispensing Pumps)
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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.
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Fig. Model VARR / VSAT (AUTOMATIC
RETURN)(Precision Dispensing Pumps)
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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.
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Fig. Model AP / VAPT(Precision Dispensing
Pumps)
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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
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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.
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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.
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