Dover WILDEN PSG Equalizer ISD1520, Engineering, Operation & Maintenance, Page: 15 / 24

WIL-19013-E-02 15
ISD DAMPENER REASSEMBLY
For 1 ʺ ISD Dampener

O-ring Pick

9/16 ʺ Socket Wrench

9/16
ʺ
Wrench

1/8 ʺ Allen Wrench
For 1-1/2 - 3 ʺ ISD Dampener

O-ring Pick
 5/8
ʺ
Socket Wrench

5/8 ʺ Wrench

1/8
ʺ
Allen Wrench

Retaining Ring Pliers (3 ″ Only)
CAUTION: Before installing an ISD dampener into operation, review cautions and
warnings as well as ensure that the materials of construction are suitable for the
application. Refer to Wilden’s Chemical Resistance Guide for more information.
NOTE: The model pictured in this section is a metal ISD220 (1 ʺ ) integrated surge
dampener. Your specific dampener model may vary from the configuration shown.
However, the disassembly procedure will be the same.
NOTE: Replace worn parts with genuine Wilden parts for reliable performance.
Step 1 Step 2 Step 3
Install the control valve O-rings into the
bottom of the shaft using the O-ring pick.
Check that the O-ring is not damaged
during installation. Apply 2-3 drops of Vibra-Tite123 (or
similar thread locking compound) to the
shaft threads.
Install the shaft on the backing diaphragm
until hand tight.
DISASSEMBLY / REASSEMBLY