Parts Ordering - Fisher 1301F Instruction Manual

Disassembly
The following procedure describes how to completely
disassemble the regulator. When part replacement
or inspection is required, complete only those steps
necessary to accomplish the job. Key numbers
referenced are shown in Figure 3 for the Type 1301F
regulator and in Figure 4 for the Type 1301G regulator
unless otherwise indicated.
1. Remove the closing cap (if one is used), and
loosen the locknut (key 18).
2. Turn the adjusting screw (key 15)
counterclockwise to remove spring compression.
3. Remove the bottom cap (key 3), bottom cap
O-ring (key 14), and spring (key 10).
4. Unthread the valve disk assembly (key 6) from the
yoke (key 4).
5. Remove the valve disk collar (key 22) from the
valve disk assembly.
6. Remove the spring case cap screws (key 16), and
separate the spring case (key 2) from the body
(key 1).
7. Remove the upper spring seat and spring (keys 9
and 11).
8. Refer to Figure 5. Unscrew the diaphragm locknut
(key 19), and remove the diaphragm plate (key 8),
the two diaphragms (key 7), and the diaphragm
plate gasket (key 13).
9. Remove the screws (key 17) from the yoke, and
take the lower and upper halves of the yoke out of
the body.
10. Unscrew the orifice (key 5). Examine seating
edge of orifice. Replace with a new part if worn
or nicked.
assembly
This procedure assumes that the regulator was
completely disassembled. If not, start these
instructions at the appropriate step. Key numbers
used are shown in Figure 3 for the Type 1301F
regulator and in Figure 4 for the Type 1301G
regulator unless otherwise indicated.
Types 1301F and 1301G
1. Screw the orifice (key 5) into the regulator.
2. Insert both halves of the yoke (key 4) into the
regulator, and fasten them together with the
screws (key 17).
3. The valve disk assembly (key 6) has two valve
disks, one on each end. Inspect both valve disks,
and select the one to be used. Thread the valve
disk assembly into the yoke so that the disk to
be used is positioned against the orifice. Thread
the valve disk collar (key 22) onto the exposed
end of the valve disk assembly.
4. Place the bottom cap O-ring (key 14) on the
bottom cap (key 3). Place the spring (key 10) in
the bottom cap, and thread it into the regulator.
5. Put the body gasket (key 12) on the regulator
body (key 1).
6. Refer to Figure 5. Place the diaphragm plate
gasket (key 13), two diaphragms (key 7), and
the diaphragm plate (key 8) on the yoke (key 4).
Make sure the diaphragm convolutions are toward
the spring, and secure the parts by threading the
diaphragm locknut (key 19) onto the yoke.
7. Place the regulator spring (key 11) and upper
spring seat (key 9) on the diaphragm plate.
8. Position the spring case (key 2) over the spring
and on the regulator body. Orient the spring case
vent or vents as necessary. Insert the cap screws
(key 16), and tighten them only finger-tight.
9. Thread the adjusting screw and locknut
(keys 15 and 18) into the spring case just far
enough to slightly compress the spring. Securely
tighten the cap screws (key 16), and refer to the
Startup section for adjustment procedures.

Parts Ordering

When corresponding with your local Sales Office about
this regulator, include the type number and all other
pertinent information stamped on the bottom cap and
on the nameplate. Specify the complete 11-character
part number from the following parts list when ordering
replacement parts.
5