The Valve,check, cataloged under National Stock Number 4820-01-630-8283, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Warren Alloy Valve and Fitting Co Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-630-8283 |
| Primary Part Number | WARREN-3155F .75IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Warren Alloy Valve and Fitting Co Inc |
| Status | ACTIVE |
| Flange Shape | ROUND ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material Document and Classification | ASTM A105N ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Valve Size | 0.750 INCHES IN |
| Nominal Outside Diameter | 3.860 INCHES ALL ENDS IN |
| Face to Face Distance | 4.610 INCHES IN |
| Material | STEEL BODY |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.510 INCHES ALL ENDS IN |
| 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 |
|---|---|
| WARREN-3155F .75IN | W & O Supply Inc (USA) |
| WARREN-3155F .75IN PRIMARY | Warren Alloy Valve and Fitting Co Inc (USA) |
NSN 4820-01-630-8283 is a Valve,check, manufactured by Warren Alloy Valve and Fitting Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-630-8283 has 2 manufacturer part numbers on file: WARREN-3155F .75IN (W & O Supply Inc), WARREN-3155F .75IN (Warren Alloy Valve and Fitting Co Inc).
Key specifications for WARREN-3155F .75IN: Flange Shape: ROUND ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS; Material Document and Classification: ASTM A105N ASSN STD SINGLE MATERIAL RESPONSE BODY. 10 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.