4820-00-875-1571 VALVE,GATE Index 4420-00-875-1575 COOLER,FLUID,INDUSTRIAL

National Stock Number:
4820-00-875-1574

Federal Supply Class:
4820

National Item Identification Number:
008751574

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:
8171A72352CURTISS-WRIGHT FLOW CONTROL CORPORATION


Techincal Specification:
BOLT HOLE NOMINAL DIAMETER0.687 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.875 INCHES 2ND END
BOLT HOLE QUANTITY12 2ND END
BOLT HOLE QUANTITY14 1ST END
BOLT CIRCLE NOMINAL DIAMETER10.625 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER11.062 INCHES 1ST END
BONNET ATTACHMENT METHODBOLTED
BONNET TYPEINSIDE SPRING
CONNECTION TYPEFLANGE 1ST END
CONNECTION TYPEFLANGE 2ND END
DISK LOADING METHODSPRING
FIRST CONNECTION FACE TO CENTERLINE DISTANCE9.187 INCHES
FLANGE FACE DESIGNPLAIN 1ST END
FLANGE SHAPEROUND WITH HOLES 2ND END
FLANGE SHAPEROUND WITH HOLES 1ST END
FLOW CONTROL DEVICEDISK
MATERIALSTEEL BODY
MATERIALSTEEL COMP 303 FLOW CONTROL DEVICE
MATERIALSTEEL COMP 416 PACKING
MATERIALSTEEL COMP 416 STEM
MAXIMUM OPERATING TEMP650.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE50.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MOUNTING FACILITYBRACKET
NOMINAL OUTSIDE DIAMETER12.500 INCHES 2ND END
NOMINAL OUTSIDE DIAMETER12.750 INCHES 1ST END
NOMINAL THICKNESS0.812 INCHES 1ST END
NOMINAL THICKNESS1.437 INCHES 2ND END
SECOND CONNECTION FACE TO CENTERLINE DISTANCE10.000 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE OPERATION METHODAUTOMATIC
VALVE SIZE8.000 INCHES


Click here to Register for Free 30-day Trial

© 2025 NSN-Now. All rights reserved.    Privacy Policy  |  Contact Us