PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

404-01Valve,check

Spx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons Dba Use CAGE Code 3e2t9 for Cataloging · NSN 4820-01-094-6253 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-094-6253 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-094-6253. Primary manufacturer part number: 404-01.
Features
  • Valve,check — FSC 4820
  • Material: COPPER ALLOY OVERALL
  • Mounting Position: HORIZONTAL
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Connection Style: PLAIN (TUBE) SECOND END
  • Thread Series Designator: NPT SECOND END
  • Thread Class: 3A FIRST END A
  • Valve Operation Method: AUTOMATIC
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Valve,check, cataloged under National Stock Number 4820-01-094-6253, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Spx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons Dba Use CAGE Code 3e2t9 for Cataloging. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-094-6253
Primary Part Number404-01
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSpx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons Dba Use CAGE Code 3e2t9 for Cataloging
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Mounting PositionHORIZONTAL
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Connection StylePLAIN (TUBE) SECOND END
Thread Series DesignatorNPT SECOND END
Thread Class3A FIRST END A
Valve Operation MethodAUTOMATIC
Connection StyleFLARED (TUBE) FIRST END
Thread DirectionRIGHT-HAND SECOND END
Thread Series DesignatorUNF FIRST END
Nominal Thread Size0.438 INCHES FIRST END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Nominal Thread Size0.250 INCHES SECOND END IN
Thread DirectionRIGHT-HAND FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-036-338940401 INTERCHANGEABLE
Seat,valve
Northrop Grumman Systems Corporation Div Marine Systems
5360-00-179-650255811 INTERCHANGEABLE
Spring,helical,compression
Woodward Hrt Inc
5935-00-249-1679 INTERCHANGEABLE
Socket,plug-in Electronic Compon
3040-00-317-31974501-203 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
5950-00-509-1210 INTERCHANGEABLE
Transformer,pulse
2940-00-529-2738122-0037 INTERCHANGEABLE
Filter Element,fluid
Cummins Power Generation Inc.
5935-00-801-65284040-1 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Dri Relays Inc. Dba Dri Relays Inc
5930-00-820-954610670368 INTERCHANGEABLE
Switch,push
Us Army Aviation and Missile Command
6350-00-932-5546613906-1 INTERCHANGEABLE
Light Box Assy
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5935-00-986-74142067009 INTERCHANGEABLE
Socket,plug-in Electronic Compon
L3harris Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
404-01 Spx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons Dba Use CAGE Code 3e2t9 for Cataloging (USA)
723816-124AND125 Raytheon Company Div Rmd Strategic (USA)
55811 Keco Industries, Inc. (USA)
4820PL1031170 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
4820-00-036-3389INTERCHANGEABLE
SEAT,VALVE
40401
5360-00-179-6502INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
55811
5935-00-249-1679INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
3040-00-317-3197INTERCHANGEABLE
CONNECTING LINK,RIGID
4501-203
5950-00-509-1210INTERCHANGEABLE
TRANSFORMER,PULSE
2940-00-529-2738INTERCHANGEABLE
FILTER ELEMENT,FLUID
122-0037
5935-00-801-6528INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
4040-1
5930-00-820-9546INTERCHANGEABLE
SWITCH,PUSH
10670368
6350-00-932-5546INTERCHANGEABLE
LIGHT BOX ASSY
613906-1
5935-00-986-7414INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
2067009
3455-00-997-2423INTERCHANGEABLE
CUTTER,MILLING,ANGLE
16247
4730-01-253-7329INTERCHANGEABLE
NIPPLE,PIPE

Frequently Asked Questions

What is NSN 4820-01-094-6253?

NSN 4820-01-094-6253 is a Valve,check, manufactured by Spx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons Dba Use CAGE Code 3e2t9 for Cataloging, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-094-6253?

NSN 4820-01-094-6253 has 4 cross-referenced part numbers: 404-01 (Spx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons Dba Use CAGE Code 3e2t9 for Cataloging), 723816-124AND125 (Raytheon Company Div Rmd Strategic), 55811 (Keco Industries, Inc.), 4820PL1031170 (Jednolity Indeks Materialowy - Uniform Material Index).

What NSN replaces 4820-01-094-6253?

There are 12 known substitutes for 4820-01-094-6253: 4820-00-036-3389, 5360-00-179-6502, 5935-00-249-1679 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 404-01?

Key specifications for 404-01: Material: COPPER ALLOY OVERALL; Mounting Position: HORIZONTAL; Connection Type: THREADED EXTERNAL TUBE FIRST END; Connection Style: PLAIN (TUBE) SECOND END. 14 total characteristics are documented in the Federal Logistics Information System.

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