TEMPERATURE LIMITS:
Polypropylene 0°C to 79°C
32°F to 175°F
PVDF
–12°C to 107°C
10°F to 225°F
PTFE PFA
–28 .9°C to 148 .9°C –20°F to 300°F
Neoprene
–17 .8°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
Polyurethane 12 .2°C to 65 .6°C
10°F to 150°F
Saniflex™ –28 .9°C to 104 .4°C –20°F to 220°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
components . 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
temperatures . Consult engineering guide for
chemical compatibility and temperature limits .
CAUTION: Always wear safety glasses when
operating pump . If diaphragm rupture occurs,
material being pumped may be forced out air
exhaust .
WARNING: Prevention of static sparking — If static
sparking occurs, fire or explosion could result .
Pump, valves, and containers must be properly
grounded when handling flammable fluids and
whenever discharge of static electricity is a hazard .
CAUTION: Do not exceed 8 .6 bar (125 psig) air
supply pressure .
CAUTION: Plastic series pumps are made of virgin
plastic and are not UV stabilized . Direct sunlight
for prolonged periods can cause deterioration of
plastics .
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 pipe line
debris is clear . Use an in-line air filter . A 5µ (micron)
air filter is recommended .
NOTE: Tighten clamp bands prior to installation .
Fittings may loosen during transportation .
NOTE: When installing PTFE diaphragms, it is
important to tighten outer pistons simultaneously
(turning in opposite directions) to ensure tight fit .
NOTE: Before starting disassembly, mark a line
from each liquid chamber to its corresponding air
chamber . This line will assist in proper alignment
during reassembly .
CAUTION: Verify the chemical compatibility of
the process and cleaning fluid to the pump’s
component materials in the Chemical Resistance
Guide (see E4) .
CAUTION:
Only explosion proof (NEMA 7)
solenoid valves should be used in areas where
explosion proof equipment is required .
NOTE: Non lube-free pumps must be lubricated .
Wilden suggests an arctic 5 weight oil (ISO
grade 15) . Do not over-lubricate air supply . Over-
lubrication will reduce pump performance .
NOTE: P1 Plastic PTFE-fitted pumps come standard
from the factory with expanded PTFE gaskets . (See
Gasket Kit Installation in Section 8E .)
CAUTION: Do not over-tighten the air valve bolts .
Too much torque on the air valve bolts may damage
the air valve muffler plate . Do not exceed 3 .3 N•m
(29 in-lbs) .
1
WILDEN PUMP & ENGINEERING, LLC
S e c t i o n 1
C A U T I O N S — R E A D F I R S T !
WIL-10140-E-08
Summary of Contents for Wilden Original P1
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