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
115V digital metering pump 44 GPD/100 PSI
LME4TA-VHT1
$1,348.50Chemical metering injection pump. True microprocessor controlled instrument for precise and accurate metering control. 44GPD / 1GPH flow max. Packed with standard features, it includes automatic control via 4-20mA or 20-4mA inputs, external pace ... -
Pulsafeeder
100 GPD/60 PSI Metering Pump
100-XA-AAAAXXX
$971.10100 GPD/60 PSI metering pump 115 vac. 70 strokes / minute max. 1.0 Amps full load.Dimensions: 6.75" x 8.875" x 7.25" (H x W x D)
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Pulsafeeder
115V digital metering pump 240 GPD/35 PSI
LMH7KA-WTC3
$2,067.00Chemical metering injection pump. True microprossor controled instrument for precise and accurate metering control. 240GPD / 10GPH flow max. Packed with standard features, it includes automatic control via 4-20mA or 20-4mA inputs, external pace w... -
Pulsafeeder
115V digital metering pump 24 GPD/100 PSI
LMB4TA-VHT1
$1,273.50Chemical metering injection pump. True microprossor controled instrument for precise and accurate metering control. 24GPD / 1GPH flow max. Packed with standard features, it includes automatic control via 4-20mA or 20-4mA inputs, external pace wit... -
Pulsafeeder
Chemical Feed Pump 5GPD/250 PSI
LPB2MA-PTC1
$1,102.95Chemical Feed Pump. The Series E Plus offers the option to choose between 4-20mAfor external pace inputs for automatic control. Chemical Feed Pump or metering pump.- 20 flow/pressure envelops
- 100:1 turn down ratio
- 4-20mA with stop function
- Extern...
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Pulsafeeder
Chemical METERING PUMP 6GPD/150 PSI
LPA2MA-PTC1
$1,169.64Chemical metering pump. The Series E Plus offers the option to choose between 4-20mAfor 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 ...
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Pulsafeeder
Metering Pump - 12 GPD/80 PSI
LC03SA-VVC9
$778.05PULSAtron Series C with External pacing & degassing Head Assembly with momentary prime switch; Highly reliable timing circuit; EMI resistant; Thermally protected solenoid with auto-reset, Bleed valve assembly. Compact and rugged model with cap...12GPD 1/2GPH Manual Learn More -
Pulsafeeder
METERING PUMP 192 GPD/50 PSI
LPK7MA-WTC3
$2,540.90Metering pump by Pulsafeeder. The Series E Plus offers the option to choose between 4-20mA for external pace inputs for automatic control.- 8.0 GPH
- 100:1 turn down ratio
- 4-20mA with stop function
- Optional External Pacing with stop function ...
4-20mA control 8GPH Learn More -
Pulsafeeder
METERING PUMP 20GPD/250 PSI
LPF4MA-PTC1
$1,756.17The 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 240 GPD/35 PSI
LPH7MA-WTC3
$2,592.02The Series E Plus offers the option to choose between 4-20mAfor external pace inputs for automatic control.- 10GPH
- 100:1 turn down ratio
- 4-20mA with stop function
- Optional External Pacing with stop function
- Auto-off-Manual selection switch with i...