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The PULSA Series features diaphragm designs for every application.
Pulsafeeder's PULSA Series diaphragm metering pumps are offered with three different
diaphragms designs.
The FLAT DIAPHRAGM,
our most popular design, is ideal for almost any application. The diaphragm is designed with an
integral o-ring to ensure that no diaphragm stress is present, even under maximum bolt torque.
The HYDRATUBE
tubular diaphragm is the perfect offering for those applications where fluid viscosity is
excessive, or where particulates are suspended in the pumped media. The HYDRATUBE diaphragm
offers a straight flow path, ideal for handling such applications.
Our HYDRACONE
conical diaphragm is available on the 680, 200, and R1 models, and offers an excellent
alternative to the HYDRATUBE. The cons-shaped elastomeric diaphragm ensures stable hydraulics
even under extreme suction lift conditions due to the inherent memory retention of
the elastomeric diaphragms.
NOTE: The diaphragm animations are viewable using Apple's free Quicktime Player.
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The Versatile Flat Diaphragm Reagent Head...
Our Most Popular Design.
This easily primed, flow through head is a favorite for countless applications.
Typical liquid end construction is 316 stainless steel with a PTFE diaphragm. The
reagent head and valves are also available in alternative materials:
Alloy 20
Alloy C
Monel
Nickel
PVC
PTFE
Polypropylene
and other high alloy materials
The integral o-ring design of the diaphragm permits tightening the reagent
head bolts to maximum bolt torque without stressing the diaphragm material.
Other manufacturers offer daphragm designs requiring flat gaskets to prevent
leakage past the outer edge of a plastic diaphragm. This design relies on
compression to ensure leak-free operation. If the reagent head bolts are
over-tightened, the diaphragm may become compressed at the outer edge and be
unusable.
Flat diaphragms are also available in a variety of metal alloys and other
plastics. The metal diaphragms are recommended for extreme temperature conditions
(up to 371 °C / 700 °F) or for handling radioactive or gaseous materials.
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