The Valve,safety Relief, cataloged under National Stock Number 4820-00-532-6903, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Natural Gas Solutions North America Llc Div Industrial Products Group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-532-6903 |
| Primary Part Number | 76012A045-SERIES 1254S-3400 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Natural Gas Solutions North America Llc Div Industrial Products Group |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Style Designator | ANGLE |
| Material Document and Classification | QQ-S-763,CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-S-763,CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Features Provided | BONNET PACKING |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Surface Treatment | CADMIUM LOCATION NOT OTHERWISE SPECIFIED |
| Bonnet Attachment Method | THREADED |
| Material | STEEL COMP 304 STEM |
| Material | STEEL BODY |
| Material | STEEL COMP 304 FLOW CONTROL DEVICE |
| Material | STEEL SEAT |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT FIRST END |
| Opening Pressure Setting | 3400.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 3342.0 CUBIC FEET PER MINUTE |
| 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 |
|---|---|
| 76012A045-SERIES 1254S-3400 PRIMARY | Natural Gas Solutions North America Llc Div Industrial Products Group (USA) |
| Reference | Meaning |
|---|---|
| 1254S-3400 | 5/9 Secondary reference Texsteam Inc Dba Txt or Rcs or Texsteam |
| 254S3400 | 5/9 Secondary reference Texsteam Inc Dba Txt or Rcs or Texsteam |
| RV11R-001 | 3/2 Design control — primary reference U.S. Government activity |
| 76012A045-SERIES 1254S-3400 | 5/9 Secondary reference Texsteam Inc Dba Txt or Rcs or Texsteam |
NSN 4820-00-532-6903 is a Valve,safety Relief, manufactured by Natural Gas Solutions North America Llc Div Industrial Products Group, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-532-6903 has 1 manufacturer part number on file: 76012A045-SERIES 1254S-3400 (Natural Gas Solutions North America Llc Div Industrial Products Group).
Key specifications for 76012A045-SERIES 1254S-3400: Flow Control Device: DISK; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE FIRST END; Connection Type: THREADED INTERNAL PIPE SECOND END. 25 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.