WIL-10131-E-01
1
WILDEN PUMP & ENGINEERING, LLC
CAUTION:
Do not apply compressed air to the exhaust
port — pump will not function.
CAUTION:
Do not over lubricate air supply — excess
lubrication will reduce pump performance.
TEMPERATURE LIMITS:
Polypropylene
0°C to 79°C
32°F to 175°F
PVDF
–12°C to 107°C
10°F to 225°F
Neoprene
–17.7°C to 93.3°C
0°F to 200°F
Buna-N
–12.2°C to 82.2°C
10°F to 180°F
EPDM
–51.1°C to 137.8°C –60°F to 280°F
Viton
®
–40°C to 176.7°C –40°F to 350°F
Wil-Flex™
–40°C to 107.2°C –40°F to 225°F
Saniflex™
–28.9°C to 104.4°C –20°F to 220°F
Polyurethane –12.2°C to 65.6°C
10°F to 150°F
Tetra-Flex™
4.4°C to 107.2°C
40°F to 225°F
PTFE
4.4°C to 104.4°C
40°F to 220°F
CAUTION:
When choosing pump materials, be sure
to check the temperature limits for all wetted compo-
nents. Example: Viton
®
has a maximum limit of 176.7°C
(350°F) but polypropylene has a maximum limit of only
79°C (175°F).
CAUTION:
Maximum temperature limits are based
upon mechanical stress only. Certain chemicals will
significantly reduce maximum safe operating tempera-
tures. Consult engineering guide for chemical compat-
ibility and temperature limits.
CAUTION:
Always wear safety glasses when operat-
ing pump. If diaphragm rupture occurs, material being
pumped may be forced out air exhaust.
Plastic series pumps are made of virgin plastic and are
not UV stabilized. Direct sunlight for prolonged periods
can cause deterioration of plastics.
WARNING:
Prevention of static sparking — If static
sparking occurs, fire or explosion could result. Pump,
valves, and containers must be grounded when
handling flammable fluids and whenever discharge
of static electricity is a hazard. To ground the Wilden
“Champ,” all clamp bands must be grounded to a
proper grounding point.
CAUTION:
Do not exceed 8.6 bar (125 psig) air supply
pressure.
CAUTION:
Before any maintenance or repair is
attempted, the compressed air line to the pump should
be disconnected and all air pressure allowed to bleed
from pump. Disconnect all intake, discharge and air
lines. Drain the pump by turning it upside down and
allowing any fluid to flow into a suitable container.
CAUTION:
Blow out air line for 10 to 20 seconds
before attaching to pump to make sure all pipeline
debris is clear. Use an in-line air filter. A 5µ
micron air
filter is recommended.
NOTE:
When installing PTFE diaphragms, it is impor-
tant to tighten outer pistons simultaneously (turning in
opposite directions) to ensure tight fit.
NOTE:
P8 and PX8 PVDF pumps come standard from
the factory with expanded PTFE gaskets installed in
the diaphragm bead of the liquid chamber, in the
T-section and in the ball and seat area. PTFE gaskets
cannot be re-used. Consult PS-TG for installation
instructions during reassembly.
NOTE:
Before starting disassembly, mark a line from
each liquid chamber to its corresponding air cham-
ber. This line will assist in proper alignment during
reassembly.
CAUTION:
The P8 Plastic pump is not submersible. If
your application requires your pump to be submersed,
the PX8 model can be used with the submersible
option.
CAUTION:
Pumps should be flushed thoroughly with
water before installation into process line.
CAUTION:
Tighten all hardware prior to installation.
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C A U T I O N S – R E A D F I R S T
