Product Details | SAFETY RELIEF VALVE

4820-01-050-9075 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: 20263, 20263B51SS, 4820-01-050-9075, 01-050-9075, 4820010509075, 010509075

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 16 NOV 1977 01-050-9075

Drawings & Photos | NSN 4820-01-050-9075


Demand History | NSN 4820-01-050-9075

Part Number Request Date QTY Origin
2026301S0015 2024-08-228 2 DIBBS
20263B51SS 2024-08-228 2 DIBBS
2026301S0015 2024-07-208 2 DIBBS
20263B51SS 2024-07-208 2 DIBBS
2026301S0015 2024-05-137 2 DIBBS
20263B51SS 2024-05-137 2 DIBBS
2026301S0015 2021-12-361 2 DIBBS
20263B51SS 2021-12-361 2 DIBBS
2026301S0015 2021-11-334 2 DIBBS
20263B51SS 2021-11-334 2 DIBBS
20263 2019-05-151 4 DIBBS
20263B51SS 2019-05-151 4 DIBBS
20263 2019-05-140 4 DIBBS
20263B51SS 2019-05-140 4 DIBBS
20263 2019-04-101 3 DIBBS
20263B51SS 2019-04-101 3 DIBBS
20263 2019-02-52 1 DIBBS
20263B51SS 2019-02-52 1 DIBBS
20263 2019-02-45 4 DIBBS
20263B51SS 2019-02-45 4 DIBBS
20263 2019-02-34 4 DIBBS
20263B51SS 2019-02-34 4 DIBBS
4820-01-050-9075 2018-07-211 5 DIBBS
4820-01-050-9075 2018-06-165 2 DIBBS
4820-01-050-9075 2017-07-199 2 DIBBS
4820-01-050-9075 2017-04-116 2 DIBBS
4820-01-050-9075 2017-03-89 2 DIBBS
4820-01-050-9075 2016-09-273 1 DIBBS
4820-01-050-9075 2016-02-46 2 DIBBS
4820-01-050-9075 2015-12-354 1 DIBBS
4820-01-050-9075 2014-07-196 2 DIBBS
4820-01-050-9075 2014-03-77 2 DIBBS
4820-01-050-9075 2010-08-243 2 DIBBS
4820-01-050-9075 2009-12-336 5 DIBBS

Cross Reference | NSN 4820-01-050-9075

Part Number Cage Code Manufacturer
20263 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20263 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
20263B51SS 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20263B51SS 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM

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Technical Data | NSN 4820-01-050-9075

Characteristic Specifications
MATERIAL STEEL BODY STEEL COMP 303 FLOW CONTROL DEVICE STEEL COMP 303 SEAT STEEL COMP 303 STEM
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A216,GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY QQ-S-764,COMP 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE QQ-S-764,COMP 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE SEAT QQ-S-764,COMP 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 3.250 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 3.250 INCHES
VALVE SIZE 0.500 INCHES
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED STEAM SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 450.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE 235.0 POUNDS PER HOUR
VALVE OPERATION METHOD AUTOMATIC OR MANUAL
CONNECTION TYPE FLANGE ALL ENDS
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
NOMINAL OUTSIDE DIAMETER 3.500 INCHES ALL ENDS
NOMINAL THICKNESS 0.440 INCHES ALL ENDS
BOLT HOLE QUANTITY 4 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.625 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 2.375 INCHES ALL ENDS
FLANGE FACE DESIGN RAISED STRAIGHT ALL ENDS
RAISED FACE NOMINAL HEIGHT 0.625 INCHES ALL ENDS
RAISED FACE NOMINAL DIAMETER 1.375 INCHES ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD BOLTED
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 15.0 TO 19.0 POUNDS PER SQUARE INCH
III END ITEM IDENTIFICATION SHIP,OHIO CLASS SSN(TRIDENT)

Restrictions/Controls & Freight Information | NSN 4820-01-050-9075

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: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
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 576 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 B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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 4820-01-050-9075

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 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