The Valve,diaphragm,stop, cataloged under National Stock Number 4810-01-305-7847, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Fisher Controls Co Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-305-7847 |
| Primary Part Number | 657-ES-1.5IN |
| Item Name | Valve,diaphragm,stop |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Fisher Controls Co Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 1.500 INCHES IN |
| Maximum Operating Temp | 180.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | -40.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Material | STEEL BODY |
| Material | STEEL STEM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 42A5250-1.5IN | Fisher Controls Co Inc (USA) |
| 657-ES-1.5IN PRIMARY | Fisher Controls Co Inc (USA) |
| 657-ES-ACME | Proconex Inc (USA) |
NSN 4810-01-305-7847 is a Valve,diaphragm,stop, manufactured by Fisher Controls Co Inc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-305-7847 has 3 manufacturer part numbers on file: 42A5250-1.5IN (Fisher Controls Co Inc), 657-ES-1.5IN (Fisher Controls Co Inc), 657-ES-ACME (Proconex Inc).
Key specifications for 657-ES-1.5IN: Style Designator: STRAIGHT THRU FLANGED ENDS; Valve Size: 1.500 INCHES IN; Maximum Operating Temp: 180.0 FAHRENHEIT SECOND RESPONSE DEGF; Maximum Operating Temp: -40.0 FAHRENHEIT FIRST RESPONSE DEGF. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.