4820-00-893-2106 VALVE,PILOT RELIEF Index 5950-00-893-2112 COIL,ELECTRICAL

National Stock Number:
4820-00-893-2107

Federal Supply Class:
4820

National Item Identification Number:
008932107

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.


Manufacturer Information:
5330F04537ATWOOD & MORRILL CO. INC. DBA WEIR VALVES AND CONTROLS USA


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER2.625 INCHES FIRST END
BOLT CIRCLE NOMINAL DIAMETER3.500 INCHES SECOND END
BOLT HOLE NOMINAL DIAMETER0.625 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.750 INCHES SECOND END
BOLT HOLE QUANTITY4 FIRST END
BOLT HOLE QUANTITY4 SECOND END
CONNECTION TYPEFLANGE SECOND END
CONNECTION TYPEFLANGE FIRST END
CRITICALITY CODE JUSTIFICATIONZZZY
DISK LOADING METHODSPRING
FEATURES PROVIDEDVALVE STEM LOCK SHIELD
FLANGE FACE DESIGNRAISED STRAIGHT FIRST END
FLANGE FACE DESIGNRAISED STRAIGHT SECOND END
FLANGE SHAPEROUND WITH HOLES SECOND END
FLANGE SHAPEROUND WITH HOLES FIRST END
FLOW CONTROL DEVICEPOPPET
MATERIALCOBALT ALLOY BODY LINING
MATERIALNICKEL ALLOY BODY
MATERIALNICKEL ALLOY FLOW CONTROL DEVICE
NOMINAL OUTSIDE DIAMETER3.750 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER4.875 INCHES SECOND END
OPENING PRESSURE SETTING850.0 POUNDS PER SQUARE INCH
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSSELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEMS
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC


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