Product Details | SAFETY RELIEF VALVE

4820-01-221-8855 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: 20152, 20152JS91SS, 4820-01-221-8855, 01-221-8855, 4820012218855, 012218855

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 05 DEC 1985 01-221-8855

Drawings & Photos | NSN 4820-01-221-8855


Demand History | NSN 4820-01-221-8855

Part Number Request Date QTY Origin
4820-01-221-8855 2016-02-49 3 DIBBS
4820-01-221-8855 2015-05-145 3 DIBBS
4820-01-221-8855 2014-09-265 2 DIBBS
4820-01-221-8855 2014-09-253 2 DIBBS
4820-01-221-8855 2013-01-31 2 DIBBS
4820-01-221-8855 2012-01-25 4 DIBBS
4820-01-221-8855 2011-02-37 1 DIBBS
4820-01-221-8855 2010-03-88 1 DIBBS
4820-01-221-8855 2009-03-77 6 DIBBS

Cross Reference | NSN 4820-01-221-8855

Part Number Cage Code Manufacturer
20152 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20152 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
20152JS91SS 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20152JS91SS 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM

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Technical Data | NSN 4820-01-221-8855

Characteristic Specifications
MAXIMUM OPERATING PRESSURE 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE SIZE 1.000 INCHES
RAISED FACE NOMINAL HEIGHT 0.062 INCHES ALL ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 3.594 INCHES
BONNET ATTACHMENT METHOD BOLTED
BOLT HOLE NOMINAL DIAMETER 0.625 INCHES ALL ENDS
MATERIAL STEEL BODY
MATERIAL STEEL CORROSION RESISTING SEAT
RAISED FACE NOMINAL DIAMETER 2.000 INCHES ALL ENDS
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 3.344 INCHES
BOLT HOLE QUANTITY 4 ALL ENDS
MATERIAL STEEL CORROSION RESISTING FLOW CONTROL DEVICE
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
MEDIA FOR WHICH DESIGNED WATER-OIL-GAS SINGLE RESPONSE
NOMINAL THICKNESS 0.562 INCHES ALL ENDS
CONNECTION TYPE FLANGE ALL ENDS
FLANGE FACE DESIGN RAISED STRAIGHT ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 3.125 INCHES ALL ENDS
NOMINAL OUTSIDE DIAMETER 4.250 INCHES ALL ENDS
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING TEMP 100.0 DEG FAHRENHEIT SINGLE RESPONSE
MATERIAL STEEL CORROSION RESISTING STEM
ADJUSTABLE PRESSURE RANGE +89.0/+110.0 POUNDS PER SQUARE INCH
VALVE OPERATION METHOD AUTOMATIC
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
BONNET TYPE INSIDE SCREW

Restrictions/Controls & Freight Information | NSN 4820-01-221-8855

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 4820-01-221-8855

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
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