Grand Terrace, CA – February 13, 2013 — Wilden®, the worldwide leader in air-operated
double-diaphragm (AODD) pump technology, is pleased to announce that the High-Pressure
models of its Advanced ™ Series Metal Air-Operated Double-Diaphragm (AODD) Pumps feature
operational capabilities that make them ideal for the loading, unloading and transfer of resins,
solvents and additives in Paint & Coatings manufacturing applications.
Specifically, Wilden High-Pressure AODD Pumps can generate up to 20.7 bar of pressure (300
psi), which is a core requirement for the reliable transfer of Paint & Coatings resins, solvents and
additives that are viscous or solid-laden. Wilden offers three models of Advanced High-Pressure
AODD Pumps:
• H200: This 25mm (1”) duplex pump uses both liquid chambers to
pump fluid. It is constructed of ductile iron and creates a 3:1
pressure ratio with a maximum inlet air pressure of 6.9 bar (100 psi)
and maximum discharge pressure of 20.7 bar (300 psi) while
delivering flow rates up to 94 L/min (25 gpm). It can handle solids
up to 6.4mm (1/4”) at operating temperatures to 225ºF (107ºC).
• H400S: This 38mm (1-1/2”) simplex pump uses only one liquid
chamber to pump fluid while the second is used as a pressureamplification chamber. It is constructed of aluminum or stainless
steel and creates a 2:1 pressure ratio with a maximum air inlet
pressure of 8.6 bar (250 psi) and maximum discharge pressure of
17.2 bar (250 psi) while delivering flow rates up to 242 L/min (64
gpm). It can handle solids up to 8mm (5/16”) at operating temperatures to 225ºF (107ºC).
• H800: This 51mm (2”) duplex pump uses both liquid chambers to pump fluid. It is
constructed of stainless steel or ductile iron and creates a 3:1 pressure ratio with a
maximum air inlet pressure of 5.9 bar (85 psi) and maximum discharge pressure of 17.2
bar (250 psi) while delivering flow rates up to 359 L/min (95 gpm). It can handle solids up
to 12.7mm (1/2”) at operating temperatures to 225ºF (107ºC).
All three models are available with Wil-Flex
™
Diaphragms, which are ideal for resin, solvent and
additive transfer. Wil-Flex diaphragms feature a flat-profile design that eliminates the need to
invert the diaphragm when rebuilding a pump, which allows for easy, cost-effective installation
and maintenance, along with increased flex life.
