WIL-10252-E-01
Wilden
®
20
Disassembly / Reassembly
Exploded View (Rubber Diaphragms)
Inner piston ring maximum torque rating: refer to Section 8D.
Exploded View (PTFE Diaphragms)
Gasket Kit / Installation
Only aluminum and cast iron pumps come standard with expanded PTFE
Gasket Kits (P/N 15-9500-99). Carefully prepare sealing surfaces by
removing all debris and foreign matter from diaphragm bead
and all mating surfaces. If necessary, smooth or deburr all sealing
surfaces. Mating surfaces must be properly aligned in order to ensure
positive sealing characteristics.
Step 1
Gently remove the adhesive covering from
the back of the PTFE tape. Ensure that the
adhesive strip remains attached to the
PTFE tape.
Step 2
Starting at any point, place the PTFE tape
in the center of the diaphragm bead groove
on the liquid chamber and press lightly on
the tape to ensure that the adhe- sive holds
it in place during assembly. Do not stretch
the tape during placement in center of
diaphragm bead groove.
Step 3
The ends of the tape should overlap
approximately 13 mm (1/2"). Proceed to
install the PTFE tape on the remaining
liquid chamber.
