Type SR8
8
Parts List
Key Description Part Number
Parts Kits
Diaphragm Kits (includes keys 3, 5, and 7. Stainless steel kits
include key 6, qty 2) Does not include all applicable parts for
changing between elastomer and metal diaphragm constructions.
See parts list for differences.
1/2 and 3/4-inch (DN 15 and 20) bodies
EPDM diaphragm and O-ring RSR58X00E12
316L SST Diaphragm and PTFE/FKM O-rings RSR58X00S12
PTFE/FKM Diaphragm and O-rings RSR58X00V12
1 and 1-1/2-inch (DN 25 and 40) bodies
EPDM diaphragm and O-rings RSR58X00E22
316L SST Diaphragm and PTFE/FKM O-rings RSR58X00S22
PTFE/FKM Diaphragm and O-rings RSR58X00V22
2 and 3-inch (DN 50 and 80) bodies
EPDM diaphragm and O-rings RSR58X00E32
316L SST Diaphragm and PTFE/FKM O-rings RSR58X00S32
Soft Seat Kits (includes keys 26, 27, and 28)
1/2-Inch (DN 15) body
PTFE/316L SST GE06788X012
PEEK/316L SST GE06788X022
3/4-Inch (DN 20) body
PTFE/316L SST GE06797X012
PEEK/316L SST GE06797X022
1-Inch (DN 25) body
PTFE/316L SST GE06323X012
PEEK/316L SST GE06323X022
1-1/2-Inch (DN 40) body
PTFE/316L SST GE06324X012
PEEK/316L SST GE06324X022
2 and 3-Inch (DN 50 and 80) bodies
PTFE/316L SST GE14009X012
PEEK/316L SST GE14009X022
1 Body
1/2-Inch (DN 15) body GE07951X012
3/4-Inch (DN 20) body GE07952X012
1-Inch (DN 25) body GE07949X012
1-1/2 Inch (DN 40) body GE07950X012
1-1/2 x 1-Inch (DN 40 x 25) body GE07776X012
2-Inch (DN 50) body GE13988X012
3-Inch (DN 80) body GE13989X012
2 Plug (metal seat)
1/2-Inch (DN 15) body GE06786X012
3/4-Inch (DN 20) body GE06795X012
1-Inch and 1-1/2 x 1-Inch
(DN 25 and 40 x 25) bodies GE06039X012
1-1/2 Inch (DN 40) body GE06191X012
2 and 3-Inch (DN 50 and 80) bodies GE14007X012
3 Plug O-Ring
1/2 and 3/4-Inch (DN 15 and 20) bodies
Elastomer diaphragms
EPDM 1H2919X0022
PTFE/FKM 1P8453X0042
316L Stainless Steel diaphragms
PTFE GE10788X012
EPDM 14B1935X032
1 and 1-1/2 Inch (DN 25 and 40) bodies
Elastomer diaphragms
EPDM 1D2888X0042
PTFE/FKM 1C7822X0142
316L Stainless Steel diaphragms
PTFE/FKM 16A6903X022
EPDM 14A1968X042
Note
Lubricate the adjusting screw (key 18)
threads and the sanitary clamp bolt threads
(key 15) to reduce galling of stainless steel.
Factory recommends Bostik Never Seez
white food grade lubricant.
Keep even spacing between clamp halves
when tightening clamp nuts. This will
ensure even loading of the diaphragm. If
clamp halves touch, please contact factory
for a replacement clamp.
9. Follow Startup and Adjustment procedures.
Soft Seat Maintenance
Take care not to damage the internal/wetted surface
nish when performing Soft Seat Maintenance.
1. Disassemble the regulator as stated in the
prior section.
2. To access soft seat (key 28), unscrew the
lower plug (key 27) from the upper plug (key 26). If
damaged, replace with new part. Apply Loctite 246 or
equivalent to male thread before tightening. Proper
torque for the assembly is 6 to 8 in•lbs (0,7 to 0,9 N•m)
for the 1/2-inch and 3/4-inch (DN 15 and 20); 8 to
10 in•lbs (0,9 to 1,1 N•m) for the 1-inch and 1-1/2 x 1-inch
(DN 25 and 40 x 25); and 5 to 7 ft•lbs (7 to 9 N•m) for the
1-1/2 inch (DN 40). Torque for 2 and 3-inch (DN 50 and
80) is 23 to 25 ft•lbs (31 to 34 N•m).
3. Reassemble as stated in the prior section.
Parts Ordering
When corresponding with your Fisher sales ofce or
sales representative about this equipment, always
reference the equipment serial number and FS
number that can be found on the nameplate.
When ordering replacement parts, reference the key
number of each needed part as found in the following
parts list. Separate kits containing all recommended
spare parts are available.
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