PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R37Valve,inhalation

Square D Co Monroe Plant · NSN 4240-01-250-8984 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-250-8984 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-250-8984. Primary manufacturer part number: R37.
Features
  • Valve,inhalation — FSC 4240
  • Criticality Code Justification: TEXT
  • General Characteristics Item Description: RUBBER; SOLE SOURCE REQUIRED BY STATUTE 6.302
  • 1 verified cross-reference
  • Primary manufacturer: Square D Co Monroe Plant
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,inhalation, cataloged under National Stock Number 4240-01-250-8984, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Square D Co Monroe Plant. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-250-8984
Primary Part NumberR37
Item NameValve,inhalation
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerSquare D Co Monroe Plant
StatusACTIVE
Criticality Code JustificationTEXT
General Characteristics Item DescriptionRUBBER; SOLE SOURCE REQUIRED BY STATUTE 6.302
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3020-00-017-2589560-2-1200 INTERCHANGEABLE
Gear-Slip Clutch,spur
Cae Usa Inc.
4320-00-336-8917R37 INTERCHANGEABLE
Rotor Assy
Circor Naval Solutions Llc Dba Warren Pumps
5905-00-683-2179280-6003P3 INTERCHANGEABLE
Resistor,fixed,film
Raytheon Company Dba Raytheon Co
3455-01-041-8813716-062369 INTERCHANGEABLE
Cutter,milling,end
Doall Baltimore Company
5305-01-314-4521 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
R37 PRIMARY Square D Co Monroe Plant (USA)
Related Parts
3020-00-017-2589INTERCHANGEABLE
GEAR-SLIP CLUTCH,SPUR
560-2-1200
4320-00-336-8917INTERCHANGEABLE
ROTOR ASSY
R37
5905-00-683-2179INTERCHANGEABLE
RESISTOR,FIXED,FILM
280-6003P3
3455-01-041-8813INTERCHANGEABLE
CUTTER,MILLING,END
716-062369
5305-01-314-4521INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 4240-01-250-8984?

NSN 4240-01-250-8984 is a Valve,inhalation, manufactured by Square D Co Monroe Plant, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-250-8984?

NSN 4240-01-250-8984 has 1 cross-referenced part number: R37 (Square D Co Monroe Plant).

What NSN replaces 4240-01-250-8984?

There are 5 known substitutes for 4240-01-250-8984: 3020-00-017-2589, 4320-00-336-8917, 5905-00-683-2179 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R37?

Key specifications for R37: Criticality Code Justification: TEXT; End Item Identification: AMERICAN OPTICAL SERIES R2090N,R4000,R5000,R6000 AND R8000 RESPIRATOR; General Characteristics Item Description: RUBBER; SOLE SOURCE REQUIRED BY STATUTE 6.302. 3 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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