The Valve,check, cataloged under National Stock Number 4820-01-651-9553, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-651-9553 |
| Primary Part Number | WARREN-853-S 1.50IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Warren Alloy Valve and Fitting Co Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 1.50 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A105N ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A182 GR.F6A ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Valve Size | 1.50 INCHES IN |
| Disk Loading Method | WEIGHT |
| Bonnet Attachment Method | BOLTED |
| Face to Face Distance | 4.65 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Valve Operation Method | AUTOMATIC |
| 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-853-S 1.50IN | W & O Supply Inc (USA) |
| WARREN-853-S 1.50IN PRIMARY | Warren Alloy Valve and Fitting Co Inc (USA) |
| WARREN-853-S-DN40 | Warren Alloy Valve and Fitting Co Inc (USA) |
| Reference | Meaning |
|---|---|
| WARREN-853-S | D/9 Drawing number reference only Warren Alloy Valve and Fitting Co Inc |
NSN 4820-01-651-9553 is a Valve,check, manufactured by Warren Alloy Valve and Fitting Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-651-9553 has 3 manufacturer part numbers on file: WARREN-853-S 1.50IN (W & O Supply Inc), WARREN-853-S 1.50IN (Warren Alloy Valve and Fitting Co Inc), WARREN-853-S-DN40 (Warren Alloy Valve and Fitting Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-652-2308. Verify interchangeability with system specifications before substitution.
Key specifications for WARREN-853-S 1.50IN: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 1.50 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 14 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.