PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

V33Air Entry,respirator

E. D. Bullard Company Dba Ed Bullard Co · NSN 4240-01-250-9128 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-250-9128 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-250-9128. Primary manufacturer part number: V33.
Features
  • Air Entry,respirator — FSC 4240
  • General Characteristics Item Description: 0.250 IN. W/BRASS NIPPLE; SOLE SOURCE REQUIRED BY STATUTE 6.302 IN
  • Criticality Code Justification: TEXT
  • 1 verified cross-reference
  • Primary manufacturer: E. D. Bullard Company Dba Ed Bullard Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Air Entry,respirator, cataloged under National Stock Number 4240-01-250-9128, 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 E. D. Bullard Company Dba Ed Bullard Co. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-250-9128
Primary Part NumberV33
Item NameAir Entry,respirator
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerE. D. Bullard Company Dba Ed Bullard Co
StatusACTIVE
General Characteristics Item Description0.250 IN. W/BRASS NIPPLE; SOLE SOURCE REQUIRED BY STATUTE 6.302 IN
Criticality Code JustificationTEXT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3030-00-269-9715190203 INTERCHANGEABLE
Belt,v
Dresser, Llc
4730-00-317-3814 INTERCHANGEABLE
Fitting,meter,oil V
4820-00-781-4951V33 INTERCHANGEABLE
Diaphragm,actuator Valve,special
Gast Mfg Corp
5961-00-983-7158V33 INTERCHANGEABLE
Semiconductor Device,diode
Micro-Metrics, Inc. Dba Aeroflex / Metelics - East Div Londonderry Operations
4820-01-294-5843 INTERCHANGEABLE
Valve,rotary,selector
6520-01-361-689624-310 INTERCHANGEABLE
Tip,evacuator,dental
Pascal Co, Inc
Cross-Reference Index
Part NumberManufacturer
V33 PRIMARY E. D. Bullard Company Dba Ed Bullard Co (USA)
Related Parts
3030-00-269-9715INTERCHANGEABLE
BELT,V
190203
4730-00-317-3814INTERCHANGEABLE
FITTING,METER,OIL V
4820-00-781-4951INTERCHANGEABLE
DIAPHRAGM,ACTUATOR VALVE,SPECIAL
V33
5961-00-983-7158INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
V33
4820-01-294-5843INTERCHANGEABLE
VALVE,ROTARY,SELECTOR
6520-01-361-6896INTERCHANGEABLE
TIP,EVACUATOR,DENTAL
24-310

Frequently Asked Questions

What is NSN 4240-01-250-9128?

NSN 4240-01-250-9128 is a Air Entry,respirator, manufactured by E. D. Bullard Company Dba Ed Bullard Co, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-250-9128?

NSN 4240-01-250-9128 has 1 cross-referenced part number: V33 (E. D. Bullard Company Dba Ed Bullard Co).

What NSN replaces 4240-01-250-9128?

There are 6 known substitutes for 4240-01-250-9128: 3030-00-269-9715, 4730-00-317-3814, 4820-00-781-4951 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of V33?

Key specifications for V33: General Characteristics Item Description: 0.250 IN. W/BRASS NIPPLE; SOLE SOURCE REQUIRED BY STATUTE 6.302 IN; End Item Identification: E. D. BULLARD MODEL 20-T HOOD SUPPLIED-AIR RESPIRATORS; Criticality Code Justification: TEXT. 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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