PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A14841Valve,diaphragm,stop

Mueller Brass Co. · NSN 4820-00-512-3601 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-512-3601 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-512-3601. Primary manufacturer part number: A14841.
Features
  • Valve,diaphragm,stop — FSC 4820
  • Valve Operation Method: MANUALMANUAL
  • Style Designator: STRAIGHT THRU
  • Connection Style: SOCKET (TUBE) ALL ENDSSOCKET (TUBE) ALL ENDS
  • Material: PLASTIC POLYAMIDE NYLON SEATCOPPER ALLOY BODY
  • Mounting Facility: BRACKET(S)BRACKET(S)
  • Media for Which Designed: REFRIGERANT 22 SECOND RESPONSE
  • Maximum Operating Temp: 275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polyamide Nylon Seatcopper Alloy Body construction
General Description

The Valve,diaphragm,stop, cataloged under National Stock Number 4820-00-512-3601, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mueller Brass Co.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-512-3601
Primary Part NumberA14841
Item NameValve,diaphragm,stop
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMueller Brass Co.
StatusCANCELLED
Valve Operation MethodMANUALMANUAL
Style DesignatorSTRAIGHT THRU
Connection StyleSOCKET (TUBE) ALL ENDSSOCKET (TUBE) ALL ENDS
MaterialPLASTIC POLYAMIDE NYLON SEATCOPPER ALLOY BODY
Mounting FacilityBRACKET(S)BRACKET(S)
Media for Which DesignedREFRIGERANT 22 SECOND RESPONSE
Maximum Operating Temp275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF
Media for Which DesignedREFRIGERANT 12 FIRST RESPONSE
MaterialPLASTIC POLYAMIDE NYLON SEATCOPPER ALLOY AND STEEL CORROSION RESISTING FLOW CONTROL DEVICE
Media for Which DesignedREFRIGERANT R-502 THIRD RESPONSE
MaterialCOPPER ALLOY AND STEEL CORROSION RESISTING FLOW CONTROL DEVICE
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
Operating Pressure500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Outside Diameter Tube Accommodated0.688 INCHES ALL ENDS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
1650-00-727-461314841 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
6610-00-796-30691484-1 INTERCHANGEABLE
Bi-Metal
Aerosonic Llc
3020-00-810-6909A15225-2 INTERCHANGEABLE
Gear,spur
L3 Technologies, Inc.
5360-00-839-8861 INTERCHANGEABLE
Spring,helical,extension
5330-01-034-554714841 INTERCHANGEABLE
Retainer,packing
Air & Liquid Systems Corporation Dba Buffalo Pumps
3020-01-037-4460A-15225-TY1 INTERCHANGEABLE
Gear,spur
L3 Technologies, Inc.
3040-01-185-8011 INTERCHANGEABLE
Shaft,shouldered
5342-01-282-5638 INTERCHANGEABLE
Door Access Flighte
5925-01-626-360614841 INTERCHANGEABLE
Circuit Breaker
Generac Mobile Products, Llc
Cross-Reference Index
Part NumberManufacturer
A14841 PRIMARY Mueller Brass Co. (USA)
A14863 Mueller Brass Co. (USA)
A-50913 Keco Industries, Inc. (USA)
A15225 Mueller Brass Co. (USA)
A15225 Keco Industries, Inc. (USA)
14841 Mueller Brass Co. (USA)
Related Parts
1650-00-727-4613INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
14841
6610-00-796-3069INTERCHANGEABLE
BI-METAL
1484-1
3020-00-810-6909INTERCHANGEABLE
GEAR,SPUR
A15225-2
5360-00-839-8861INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5330-01-034-5547INTERCHANGEABLE
RETAINER,PACKING
14841
3020-01-037-4460INTERCHANGEABLE
GEAR,SPUR
A-15225-TY1
3040-01-185-8011INTERCHANGEABLE
SHAFT,SHOULDERED
5342-01-282-5638INTERCHANGEABLE
DOOR ACCESS FLIGHTE
5925-01-626-3606INTERCHANGEABLE
CIRCUIT BREAKER
14841

Frequently Asked Questions

What is NSN 4820-00-512-3601?

NSN 4820-00-512-3601 is a Valve,diaphragm,stop, manufactured by Mueller Brass Co., classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-512-3601?

NSN 4820-00-512-3601 has 6 cross-referenced part numbers: A14841 (Mueller Brass Co.), A14863 (Mueller Brass Co.), A-50913 (Keco Industries, Inc.), A15225 (Mueller Brass Co.), A15225 (Keco Industries, Inc.) and 1 more.

What NSN replaces 4820-00-512-3601?

There are 9 known substitutes for 4820-00-512-3601: 1650-00-727-4613, 6610-00-796-3069, 3020-00-810-6909 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A14841?

Key specifications for A14841: Valve Operation Method: MANUALMANUAL; Style Designator: STRAIGHT THRU; Connection Style: SOCKET (TUBE) ALL ENDSSOCKET (TUBE) ALL ENDS; Material: PLASTIC POLYAMIDE NYLON SEATCOPPER ALLOY BODY. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-512-3601 still in active supply?

NSN 4820-00-512-3601 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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