Product Details | PRESSURE AND TEMPERATURE RELIEF VALVE

4820-01-197-6861 A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also VALVE, SAFETY RELIEF and VALVE, REGULATING. TEMPERATURE.

Part Alternates: MDD44T16S40A, MDD-44T-16S-40-A, 4820-01-197-6861, 01-197-6861, 4820011976861, 011976861

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 24 DEC 1984 01-197-6861

Drawings & Photos | NSN 4820-01-197-6861


Cross Reference | NSN 4820-01-197-6861

Part Number Cage Code Manufacturer
MDD-44T-16S-40-A 78357 PARKER-HANNIFIN CORPORATION DBA SNAP TITE QD & V

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Technical Data | NSN 4820-01-197-6861

Characteristic Specifications
BODY STYLE A6 STRAIGHT THRU W/OFFSET
OFFSET DISTANCE 1.118 INCHES NOMINAL
BODY MATERIAL ALUMINUM
FLOW CONTROL DEVICE PISTON, SPRING LOADED
END CONNECTION QUANTITY 2
FIRST END CONNECTION TYPE THREADED INTERNAL PIPE
FIRST END STYLE DESIGNATOR G11 PLAIN
FIRST END NOMINAL PIPE SIZE ACCOMMODATED 1.000 INCHES
FIRST END THREAD DIRECTION RIGHT-HAND
SECOND END RELATIONSHIP WITH FIRST END IDENTICAL
TEMP ADJUSTABILITY NOT ADJUSTABLE
TEMP RATING NOT RATED
VALVE DISCHARGE FLOW RATE 3.0 GALLONS PER MINUTE
TEMP CONTROL DEVICE TYPE FUSIBLE
ADJUSTABLE PRESSURE RANGE 1000.0 TO 4000.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-197-6861

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information