Reciprocating Pumps - Diaphragm, Piston, Plunger
These pumps have a diaphragm, piston or plunger which is
reciprocating back and forth through a fixed stoke length. The
diaphragm pumps use a circular semi-flat membrane that is flexed
from a concave to a convex shape within a sealed chamber. There is
no actual sliding contact of parts in the pumping chamber and
therefore these pumps can handle solids, slurries, fibrous and very
thick liquids quit well. Most diaphragm pumps are air operated, but
electric do exist. Electric models are typically very small with
several individual diaphragms working in series being driven by a
rotating angled cam or a single diaphragm being driven by a
mechanical connection to a solenoid. In this case, they are
typically designed as metering pumps. Piston pumps like the name
implies have a piston, ceramic typically, reciprocating within a
very tight tolerance cylinder. Because of their materials of
construction and mechanical design, they produce extremely high
discharge pressures. By making them with several pistons working
together in a single head a semi-steady flow can be obtained. With
any of these pumps special consideration must be given to the
cyclic pressure or hydraulic pulsation’s which
naturally occur.Typical Positive Displacement Reciprocating pumps
include AODD, single diaphragm, electric diaphragm, metering or
proportioning and piston to name a few.
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Pulsafeeder
METERING PUMP 192GPD/50 PSI
LPK7MA-PTC3
$1,954.53The Series E Plus offers the option to choose between4-20mAfor external pace inputs for automatic control.- 20 flow/pressure envelops
- 100:1 turn down ratio
- Optional 4-20mA with stop function
- Optional External Pacing with stop function
- Auto-off-Ma...
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Pulsafeeder
METERING PUMP 22GPD/150 PSI
LPD4MA-PTC1
$1,397.07The Series E Plus offers the option to choose between4-20mAfor external pace inputs for automatic control.- 20 flow/pressure envelops
- 100:1 turn down ratio
- Optional 4-20mA with stop function
- Optional External Pacing with stop function
- Auto-off-Ma...
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Pulsafeeder
METERING PUMP 240GPD/35 PSI
LPH7MA-PTC3
$2,592.02The Series E Plus offers the option to choose between4-20mAfor external pace inputs for automatic control.- 20 flow/pressure envelops
- 100:1 turn down ratio
- Optional 4-20mA with stop function
- Optional External Pacing with stop function
- Auto-off-Ma...
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Pulsafeeder
METERING PUMP 44GPD/100 PSI
LPE4MA-PTC1
$1,436.40The Series E Plus offers the option to choose between4-20mAfor external pace inputs for automatic control.- 20 flow/pressure envelops
- 100:1 turn down ratio
- Optional 4-20mA with stop function
- Optional External Pacing with stop function
- Auto-off-Ma...
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Pulsafeeder
Metering Pump 6 GPD/150 PSI
LPA2SA-PTC1
$928.53The Series E Plus offers manual control over stroke length andstroke rate.- 20 flow/pressure envelops
- 100:1 turn down ratio
- Auto-off-Manual selection switch with indicator lights
- Built in fuse
- Clear hinged cover over controls for water resistance...
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Pulsafeeder
Chemical Metering Pump
LB04SA-PTC1
$1,291.08Chemical metering pump. 25GPD The Series A Plus offers manual control over stroke length and stroke rate. Head mat'l is glass-filed PPL.- 4 distinct flow/pressure envelops
- 100:1 turn down ratio
- Internally dampened to reduce noise - ideal f...
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Pulsafeeder
Metering Pump 5 GPD/250 PSI
LPB2SA-PTC1
$848.16The Series E Plus offers manual control over stroke length andstroke rate.- 20 flow/pressure envelops
- 100:1 turn down ratio
- Auto-off-Manual selection switch with indicator lights
- Built in fuse
- Clear hinged cover over controls for water resistance...
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All-Flo Pumps
Aluminum Air Operated Diaphragm Pump
A150-NAA-GGPN-B30
$1,442.34Aluminum AODD Pump 1 1/2". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Models available in PP, PVDF, Nylon, Conductive Nylon, Al and 316SS fro...Geolast Diaphragm 1.5" Learn More -
Pulsafeeder
115V digital metering pump 192 GPD/50 PSI
LMK7KA-WTC3
$2,034.00Chemical metering injection pump. True microprossor controled instrument for precise and accurate metering control. 190GPD / 7.9GPH flow max. Packed with standard features, it includes automatic control via 4-20mA or 20-4mA inputs, external pace ... -
Pulsafeeder
15 GPD/100 PSI Metering Pump
015-XA-AAAAXXX
$832.6515 GPD 100 PSI metering pump 115 vac. 25 strokes / minute max. Turn Down Ratio: 10:1CHEM-TECH Series 100 Metering Pump 15 GPD @ 100 PSI, 115 VAC Manual Control Stroke length is manually adjustable. See Specifications and Downloads tabs for de...115v 0.63GPH Learn More