Product Details | SAFETY RELIEF VALVE

4820-01-420-4122 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.

Part Alternates: PLC11701, PLC-11701, 157A PLC-11701, 157APLC11701, 4820-01-420-4122, 01-420-4122, 4820014204122, 014204122

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 16 OCT 1995 01-420-4122

Drawings & Photos | NSN 4820-01-420-4122


Cross Reference | NSN 4820-01-420-4122

Part Number Cage Code Manufacturer
157A PLC-11701 99565 ADMIRAL VALVE, LLC DBA CPV MANUFACTURING
PLC-11701 99565 ADMIRAL VALVE, LLC DBA CPV MANUFACTURING

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Technical Data | NSN 4820-01-420-4122

Characteristic Specifications
MATERIAL NICKEL ALLOY BODY
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE BALL
MAXIMUM OPERATING PRESSURE 6000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE UNTHREADED INTERNAL TUBE ALL ENDS
CONNECTION STYLE G20A SOCKET ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED 1.330 INCHES 1ST END 0.855 INCHES 2ND END
ADJUSTABLE PRESSURE RANGE 1500.0 TO 3500.0 POUNDS PER SQUARE INCH
SPECIAL FEATURES TEFLON O-RINGS; 0.156 IN. BALL ORIFICE
III END ITEM IDENTIFICATION SUPPLY CLASS AOE

Restrictions/Controls & Freight Information | NSN 4820-01-420-4122

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
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
NMF Description 127220 PRESSURE REG/RED/RELIEF VALVES NOI
Less than car load rating
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code AX Defense Supply Center Columbus
Columbus, OH 43216-5000
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 4820-01-420-4122

Category Code Description
Cognizance Codes3BNavy-owned stocks of field level repairable DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
ReparabilityDField Level Reparables
Acquisition Advice CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each