
DeZURIK
D10322
Page 24
November 2020
Seat Replacement
(Continued)
Fyre-Block Seat Options (RTS2, TTS2, TIS2, and RIS2)
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 control ring (A22) in the
groove in the new PTFE seat (A21).
d. Center the PTFE seat (A21), 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 actuator connection was
loosened in step a, tighten the
connection.
h. Adjust the packing gland nuts (A15) as described in the
Packing Adjustment
section.
i. Continue with step 7 on page 24.
Figure 13
— Seat Options
(RTS2, TTS2, TIS2, and RIS2)