The Demand Regulator,valve, cataloged under National Stock Number 4240-00-770-0266, 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 Mine Safety Appliances Company. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-00-770-0266 |
| Primary Part Number | 91793 |
| Item Name | Demand Regulator,valve |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM CAST BODY; WITH SCHRADER ADAPTER AND AMERICAN STD PIPE THREAD FITTINGS; DIAPHRAGM ACTUATED VALVE DELIVERS AIR TO FACEPIECE DURING INHALATION; THREADED CAP; BELT CLIP INCLUDED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 01-91793 | Mine Safety Appliances Company (USA) |
| 91793 PRIMARY | Mine Safety Appliances Company (USA) |
| 73765-54X3RAPCF21 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 73765-54X3PCF21 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
NSN 4240-00-770-0266 is a Demand Regulator,valve, manufactured by Mine Safety Appliances Company, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-00-770-0266 has 4 cross-referenced part numbers: 01-91793 (Mine Safety Appliances Company), 91793 (Mine Safety Appliances Company), 73765-54X3RAPCF21 (Electric Boat Corporation Div General Dynamics Electric Boat), 73765-54X3PCF21 (Electric Boat Corporation Div General Dynamics Electric Boat).
There are 5 known substitutes for 4240-00-770-0266: 4730-00-287-1537, 4510-00-477-8273, 5930-00-532-6058 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 91793: End Item Identification: MSA DEMAND FLOW AIR-LINE RESPIRATORS; General Characteristics Item Description: ALUMINUM CAST BODY; WITH SCHRADER ADAPTER AND AMERICAN STD PIPE THREAD FITTINGS; DIAPHRAGM ACTUATED VALVE DELIVERS AIR TO FACEPIECE DURING INHALATION; THREADED CAP; BELT CLIP INCLUDED. 2 total characteristics are documented in the Federal Logistics Information System.