Seat Replacement; Gland Retainer Nut And Seat Retainer Screw Torques - Sahara -Pak HC-1260 Instruction Manual

Refer to the component drawing on page 2 of this cut sheet for parts identification. With the disc in the
closed position, remove the valve from the line.
1. Lay the valve down with the disc in the closed position and the seat retainer side facing up.
2. Remove the socket head cap screws (17), the seat retainer (16), and seat (15).
3. Carefully clean the seat area in the body and seat retainer. Remove foreign matter, dirt, etc. Check
disc seating area for nicks or scratches.
4. Place the new seat (15) on disc (2), carefully centering it in the recess in the body.
5. Align the holes in the seat retainer (16) with matching holes in body and carefully place in position on
top of seat (15).
CAUTION: Do not shift the retainer in order to align holes. It may shift from its correct position.
Lightly grease cap screw (17) threads and tighten down evenly, alternating from top to bottom and
side to side. Tighten to the torque values in Table 1 shown below.
6. Operate valve several times and examine seat for any damage before reinstalling the valve in the
line.
TABLE 1

GLAND RETAINER NUT AND SEAT RETAINER SCREW TORQUES

Valve Size
3"
4"
6"
8"
10"
12"
Reference CS029B
Page 4 of 6
VALVE

SEAT REPLACEMENT

Gland Nut
150 300
60 60
60 60
80 120
80 140
110 190
130 220
Seat Retainer Screws
150 300
100 100
175 175
100 175
175 175
175 300
300 300
Rev 1
08/08/2013