
DeZURIK
November 2020
Page 23
D10322
Seat Replacement
(Continued)
Metal Seat Option (S2)
a. If the actuator is
connected to the valve
shaft, loosen the
connection so that the
valve shaft can rotate.
b. Loosen the packing gland
nuts (A15).
c. Place the seat support
ring (A29) in the body.
d. Center the gasket (A27)
and the metal seat (A28)
on the closed disc.
e. Apply a rust inhibitor such
as Never Seez to the
threads of the seat
retainer screws (A23).
f. With all components
centered, mount the seat retainer (A20) to the body with the seat retainer screws. Tighten the
screws as shown in Table D (page 24).
g. If the valve-to-actuator connection was loosened in step a, re-tighten the connection.
h. Adjust the packing gland nuts (A15) as described in the
Packing Adjustment
section. If the
packing is live-loaded, tighten the nuts as shown in Table A (page 17) for Class 150 valves, or
in Table B (page 18) for Class 300 valves.
i. Continue with step 7 on page 24.
Figure 12
— Metal Seat Option (S2)