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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All-Flo Pumps
PP Air Operated Double Diaphragm Pump
A050-SPP-TTPT-S70
$823.00PolyPro / Teflon Air AODD Pump 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. For handling large size solids order the Max-pass valve under...PolyPro / Teflon 1/2" Learn More -
Standard
Stainless Steel Diaphragm pump FDA
SPFG05PPP
$2,593.00Stainless Steel Diaphragm pump, air / pneumatic, double
FDA Compliant double diaphragm Pumps are specifically engineered for food and cosmetic applications and are constructed with the FDA CFR Title 21 approved materials for food contact. Each ai...
1/2" 316SS Learn More -
All-Flo Pumps
PP Air Operated Double Diaphragm Pump Bolted Series
PE-038
$400.87PolyPro Air AODD Pump 3/8" S038-SQP-SEPE-S70. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Click here to Learn How to Size your Diaphragm Pum... -
All-Flo Pumps
Conductive Nylon AODD Bolted Model
C038-SQY-TT3T-SF0
$728.46Diaphragm pump, Conductive Nylon. AODD pumps, Although the air powered pump eliminates ignition from electrical motors and internal combustion engines when pumping flammable fluids there is still the possibility of static electrical charge buil...3/8" Learn More -
All-Flo Pumps
Conductive Nylon AODD Bolted Model
CB-038
$416.46Although the air powered pump eliminates ignition from electrical motors and internal combustion engines when pumping flammable fluids there is still the possibility of static electrical charge build up on the outside of the pump. All-flo now p... -
All-Flo Pumps
Plastic Air Operated Diaphragm Pump
A050-SPP-GGPN-S70
$601.63PolyPro Air AODD Pump 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. Click here to Learn How to Size your Diaphragm Pump and for a Materi...PolyPro Learn More -
All-Flo Pumps
PP Air Operated Double Diaphragm Pump Bolted Series
S038-SQP-GNPN-S70
$422.99PolyPro Air AODD Pump 3/8". Max-Pass valve installed. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces previous model PB-038. Click here to ...
3/8" PP Learn More -
All-Flo Pumps
PP Air Operated Diaphragm Pump
PT-038
$631.40PolyPro Air AODD Pump 3/8". C038-SQP-TTPT-S70 Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. For handling large size solids order the Max-pass v...3/8" PP/TFE Learn More -
All-Flo Pumps
PP Air Operated Double Diaphragm Pump Bolted Series
PV-038
$432.09PolyPro Air AODD Pump 3/8". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. For handling large size solids order the Max-pass valve under accessor... -
All-Flo Pumps
Kynar Air Operated Double Diaphragm Pump Bolted Series
S038-SQK-SEKE-S70
$749.58Kynar Air AODD Pump 3/8". PVDF Kynar body, Santoprene elastomers, PTFE Teflon diaphragm. Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Often use...3/8" 9GPM Kynar Learn More