4820-01-431-6669 PISTON,VALVE Index 4820-01-431-6671 DISK,VALVE

National Stock Number:
4820-01-431-6670

Federal Supply Class:
4820

National Item Identification Number:
014316670

Description:
DIAPHRAGM,VALVE,FLAT

Detail:
An item in the form of one or more thin flexible sheets normally designed to form a tight seal between chambers of a valve, and to transmit motion to a valve disk either directly or through a mechanical linkage. The surface of the item(s) may not be formed or molded to have a beaded or rolled edge, ribs, or any other raised surfaces. The item may contain bolt holes and/or a center hole. Excludes DIAPHRAGM, VALVE, SPECIAL SHAPED and GASKET.


Manufacturer Information:
6983468-PIECE 2053711NAVAL SEA SYSTEMS COMMAND
803-698346853711NAVAL SEA SYSTEMS COMMAND
803-6983468-PC02053711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER2.800 INCHES NOMINAL
CENTER HOLE DIAMETER0.320 INCHES MINIMUM AND 0.360 INCHES MAXIMUM
HOLE DIAMETER0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM
MATERIAL THICKNESS0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM
MATERIALPLASTIC POLYAMIDE (NYLON)
MEDIA FOR WHICH DESIGNEDWATER, SALT
PRESSURE RATING450.0 POUNDS PER SQUARE INCH NOMINAL
OUTSIDE DIAMETER3.200 INCHES NOMINAL
STYLE DESIGNATORFLAT
TEMP RATING165.0 FAHRENHEIT MAXIMUM


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