5
4 To disassemble diaphragm assembly, remove nut 11a.
When reassembling, note that abrasive side of emery cloth
washers face against diaphragm.
5 Screw diaphragm assembly back into place.
11h screws into 12b until it bottoms, then back off 1/2 to 1
full turn – this is important.
6 Note: single seat balanced valve does not require
any lock-up adjustment.
7 Carefully reinstall upper diaphragm case 21. Diaphragm must
not be pinched between upper and lower cases 21 and 24.
Make sure travel indicator 45 is working. Tighten
bolts 23-22 evenly.
8 Insert spring 9. Be sure it nests correctly into part 11b.
Replace remaining parts removed under Step 1 above
and return adjustment to original setting.
Condensed Parts List
All Models
Illustration Part
Number Description Number
1 Seal Cap 143-16-005-00
1a Seal Cap 121-10-005-52
1b Seal Cap 090-00-005-02
2* O-Ring 951357
2a
Tetraseal (or O-Ring)
906534
1-1/2" x 1-5/8"
2b
Tetraseal (or O-Ring)
904092
1-3/4" x 2"
3* Adjustment Spring Button 143-16-009-00
3a Spring Adjusting Screw 090-16-007-00
4 Hex Nut, 1/2" – 13 906537
4a Hex Steel Nut, 5/8" – 11 921407
5 Housing Cover 121-10-005-51
5a Housing Cover 091-16-080-53
7a Top Spring Button 121-10-009-51
7b
Thrust Bearing, stainless steel
930510
ball, 3/8" dia.
7c Top Spring Button 091-16-009-00
8
Cap Screws, Hex Hd.,
9210029
5/16" – 18 x 7/8" lg.
9 Spring – See Table
*Minimum Recommended Spare Parts
All Models
Illustration Part
Number Description Number
1" Double Seat Valve Assembly,
091-16-515-01
brass trim, Buna-N
1" Double Seat Valve Assembly,
091-16-515-03
stainless steel trim, Buna-N
1" Double Seat Valve Assembly,
091-16-515-11
brass trim, Red Polyurethane
1" Double Seat Valve Assembly,
stainless steel trim, 091-16-515-13
Red Polyurethane
11/16" Double Seat Valve Assembly,
091-16-515-00
brass trim, Buna-N
12 11/16" Double Seat Valve Assembly,
091-16-515-02
stainless steel trim, Buna-N
11/16" Double Seat Valve Assembly,
091-16-515-10
brass trim, Red Polyurethane
11/16" Double Seat Valve Assembly,
stainless steel trim, 091-16-515-12
Red Polyurethane
1" Single Seat Valve Assembly,
stainless steel trim, 091-16-515-51
Red Polyurethane
11/16" Single Seat Valve Assembly,
stainless steel trim, 091-16-515-50
Red Polyurethane
12a* O-Ring, 3/8" x 1/2" 934007
Male Valve Stem, 5-1/16" lg.,
brass, for 1" & 11/16" double 091-16-116-02
12b
seat assembly
Male Valve Stem, 5-1/16" lg.,
stainless, for 1" & 11/16" 091-16-116-00
double seat assembly
*Minimum Recommended Spare Parts
Over-Pressurization Protection
Protection must be provided for the downstream piping system
and the regulator's low pressure chambers to assure against the
potential of over-pressurization due to a regulator malfunction
or a failure of the regulator to lock up. The allowable over-
pressurization is the lowest of the maximum pressures permitted
by federal codes, state codes, Sensus bulletin RDS-1498,
or other applicable standards. The method of providing
over-pressure protection could be a relief valve, a monitor
regulator, a shut off device or any similar device.
Temperature Limits
The regulator models 461-S, 461-12S, and 461-8S can be used
for flowing temperatures from -20°F to 150°F.
Buried Service
The regulator models 461-S, 461-12S, and 461-8S
are not recommended for buried service.
Installation and Maintenance Instructions
Model 461-S, 461-8S, and 461-12S Regulator
To Next Page
Loading...
Need help?
General
