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Model # 1790 Official Watts 1" water pressure reducing valve
Here are the diagrams and repair parts for Official Watts 1790 1" water pressure reducing valve, as well as links to manuals and error code tables, if available.
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1790 1" Water Pressure Reducing Valve
#22C
Replacement parts diagram
Union seal
Part #35C103
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Service kit
Part #5B
The manufacturer no longer makes this part, and there's no substitute part
#19B
Replacement parts diagram
Plug
Part #37A2-1
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Service kit
Part #5A
The manufacturer no longer makes this part, and there's no substitute part
#20A
Replacement parts diagram
Strainer
Part #27Y77
The manufacturer no longer makes this part, and there's no substitute part
#21A
Replacement parts diagram
Union nut
Part #35A140
The manufacturer no longer makes this part, and there's no substitute part
#10A
Replacement parts diagram
Diagram
Part #135A20
The manufacturer no longer makes this part, and there's no substitute part
#20B
Replacement parts diagram
Strainer
Part #4500A77
The manufacturer no longer makes this part, and there's no substitute part
#9A
Replacement parts diagram
Plate
Part #135A66-M2
The manufacturer no longer makes this part, and there's no substitute part
#18B
Replacement parts diagram
Gasket
Part #1-1/16X1-1/4
The manufacturer no longer makes this part, and there's no substitute part
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