Product Details | FLUID PRESSURE REGULATING VALVE

4820-01-203-5448 A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes REGULATOR, PRESSURE, MEDICAL GAS ADMINISTRATION APPARATUS; REGULATOR, OXYGEN, BAROMETRIC CONTINUOUS FLOW; REGULATOR, OXYGEN DEMAND; REGULATOR, OXYGEN DILUTER DEMAND; and valve(1), fluid pressure regulating, aircraft.20248100015Valves, Powered48200018Valves, Nonpowered

Part Alternates: N-581, YB2310J722, N581, 1146F208T-.275IN, 1146F208T275IN, 30 N581 25T60PS, 30 N581 25TO60P, 30 N581 25TO60PSI, 30N58125T60PS, 30N58125TO60P, 30N58125TO60PSI, 4820-01-203-5448, 01-203-5448, 4820012035448, 012035448

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 15 MAR 1985 01-203-5448

Drawings & Photos | NSN 4820-01-203-5448


Demand History | NSN 4820-01-203-5448

Part Number Request Date QTY Origin
N-581 2025-06-177 1 DIBBS
YB2310J722 2025-06-177 1 DIBBS
N-581 2024-05-137 2 DIBBS
YB2310J722 2024-05-137 2 DIBBS
N-581 2024-04-116 1 DIBBS
YB2310J722 2024-04-116 1 DIBBS
N-581 2023-11-332 1 DIBBS
YB2310J722 2023-11-332 1 DIBBS
N-581 2023-04-107 1 DIBBS
YB2310J722 2023-04-107 1 DIBBS
N-581 2023-04-96 1 DIBBS
YB2310J722 2023-04-96 1 DIBBS
N-581 2022-06-160 1 DIBBS
YB2310J722 2022-06-160 1 DIBBS
4820-01-203-5448 2018-05-126 1 DIBBS
4820-01-203-5448 2016-01-03 2 DIBBS
4820-01-203-5448 2015-07-197 5 DIBBS
4820-01-203-5448 2015-07-186 5 DIBBS
4820-01-203-5448 2015-05-134 1 DIBBS
4820-01-203-5448 2015-02-32 1 DIBBS
4820-01-203-5448 2014-10-281 1 DIBBS
4820-01-203-5448 2014-06-175 2 DIBBS
4820-01-203-5448 2013-10-274 2 DIBBS
4820-01-203-5448 2013-08-213 2 DIBBS

Cross Reference | NSN 4820-01-203-5448

Part Number Cage Code Manufacturer
1146F208T-.275IN 76364 MILWAUKEE VALVE COMPANY, INC. DBA HAMMOND
30 N581 25T60PS 35795 LESLIE CONTROLS, INC.
30 N581 25TO60P 35795 LESLIE CONTROLS, INC.
30 N581 25TO60PSI 35795 LESLIE CONTROLS, INC.
N-581 35795 LESLIE CONTROLS, INC.
YB2310J722 35795 LESLIE CONTROLS, INC.

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Technical Data | NSN 4820-01-203-5448

Characteristic Specifications
BODY MATERIAL COPPER ALLOY
SEAT MATERIAL RUBBER, CHLOROPRENE
STEM MATERIAL NICKEL COPPER ALLOY
FLOW CONTROL DEVICE DISK
FLOW CONTROL DEVICE MATERIAL RUBBER, CHLOROPRENE
END CONNECTION QUANTITY 2
FIRST END CONNECTION TYPE PLAIN FACE FLANGE
FIRST END STYLE DESIGNATOR G1 PLAIN
FIRST END FLANGE SHAPE STYLE 3 ROUND
FIRST END BOLT HOLE QUANTITY 6
FIRST END FLANGE OUTSIDE DIAMETER 6.125 INCHES NOMINAL
FIRST END FLANGE THICKNESS 0.250 INCHES NOMINAL
FIRST END BOLT HOLE DIAMETER 0.688 INCHES NOMINAL
FIRST END BOLT CIRCLE DIAMETER 5.000 INCHES NOMINAL
SECOND END RELATIONSHIP WITH FIRST END IDENTICAL
BODY STYLE A1 STRAIGHT THRU
FACE TO FACE DISTANCE 11.750 INCHES NOMINAL
MEDIA FOR WHICH DESIGNED ANY ACCEPTABLE
REGULATION TYPE AUTOMATIC SINGLE STAGE
VALVE LOADING METHOD SPRING
MAXIMUM INLET PRESSURE RATING 375.0 POUNDS PER SQUARE INCH
OUTLET PRESSURE ACCURACY RATING NOT RATED
FILTER NOT INCLUDED

Restrictions/Controls & Freight Information | NSN 4820-01-203-5448

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 132740 VALVES GRAVITY FUEL OIL FLOW
Less than car load rating
Less than truck load rating M 85.0
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 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 4820-01-203-5448

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