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		                        | National Stock Number:
 4820-00-825-1608
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008251608
 
 Description:
 VALVE,SAFETY RELIEF
 
 Detail:
 A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.
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 Manufacturer Information:
 
 | 174A-1-1/4-30PSI | 79227 | WATTS REGULATOR CO |  | 174A1-1-4 | 79227 | WATTS REGULATOR CO |  | 174A11-4X11-4 | 79227 | WATTS REGULATOR CO | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | ANGLE |  | VALVE OPERATION METHOD | AUTOMATIC OR |  |  | MANUAL |  | MATERIAL | COPPER ALLOY BODY |  | FLOW CONTROL DEVICE | POPPET |  | MEDIA FOR WHICH DESIGNED | WATER, FRESH SINGLE RESPONSE |  | MAXIMUM OPERATING PRESSURE | 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MAXIMUM OPERATING TEMP | 212.0 DEG FAHRENHEIT SINGLE RESPONSE |  | CONNECTION TYPE | THREADED INTERNAL PIPE ALL ENDS |  | CONNECTION STYLE | PLAIN,OPTIONAL END(PIPE) ALL ENDS |  | NOMINAL PIPE SIZE ACCOMMODATED | 1.250 INCHES 1ST END |  | THREAD SERIES DESIGNATOR | NPT ALL ENDS |  | NOMINAL THREAD SIZE | 1.250 INCHES ALL ENDS |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | BONNET TYPE | INSIDE SPRING |  | BONNET ATTACHMENT METHOD | BOLTED |  | DISK LOADING METHOD | SPRING |  | OPENING PRESSURE SETTING | 30.0 POUNDS PER SQUARE INCH |  | FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE | 
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