Product Details | SAFETY RELIEF VALVE

4820-01-284-2177 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: 1910NC-1 AND 1900N 171T194PSI, 1910NC1AND1900N171T194PSI, 4820-01-284-2177, 01-284-2177, 4820012842177, 012842177

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 19 AUG 1988 01-284-2177

Drawings & Photos | NSN 4820-01-284-2177


Cross Reference | NSN 4820-01-284-2177

Part Number Cage Code Manufacturer
1910NC-1 AND 1900N 171T194PSI 16497 DRESSER, INC. DBA DRESSER EQUIPMENT GROUP

Request a Quote

What Our Customers Say

Compare

NSNs for Compare ( up to 4 ): Add 4820-01-284-2177

Technical Data | NSN 4820-01-284-2177

Characteristic Specifications
MATERIAL STEEL BODY
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED AIR 1ST RESPONSE STEAM 2ND RESPONSE WATER, FRESH 3RD RESPONSE
MAXIMUM OPERATING PRESSURE 150.0 POUNDS PER SQUARE INCH 1ST RESPONSE 300.0 POUNDS PER SQUARE INCH 2ND RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE FLANGE 1ST END FLANGE 2ND END
FLANGE SHAPE ROUND WITH HOLES 1ST END ROUND WITH HOLES 2ND END
NOMINAL OUTSIDE DIAMETER 11.000 INCHES 1ST END 10.000 INCHES 2ND END
NOMINAL THICKNESS 0.688 INCHES 1ST END 1.062 INCHES 2ND END
BOLT HOLE QUANTITY 8 1ST END 8 2ND END
BOLT HOLE NOMINAL DIAMETER 0.875 INCHES 1ST END 0.875 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER 9.500 INCHES 1ST END 7.875 INCHES 2ND END
FLANGE FACE DESIGN RAISED STRAIGHT 1ST END RAISED STRAIGHT 2ND END
RAISED FACE NOMINAL HEIGHT 0.062 INCHES 1ST END 0.062 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER 8.500 INCHES 1ST END 6.188 INCHES 2ND END
ADJUSTABLE PRESSURE RANGE 171.0 TO 194.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-284-2177

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 4820-01-284-2177

Category Code Description
Cognizance Codes9BNavy-owned stocks of 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 CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each