The Valve,safety Relief, cataloged under National Stock Number 4820-01-181-8636, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-181-8636 |
| Primary Part Number | C13374 1IN150LB 1X0 SET60PSI |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Bolt Circle Nominal Diameter | 3.125 INCHES FIRST END IN |
| Bolt Hole Nominal Diameter | 0.562 INCHES FIRST END IN |
| Valve Size | 1.000 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Second Connection Face to Centerline Distance | 3.250 INCHES IN |
| Bonnet Attachment Method | BOLTED |
| First Connection Face to Centerline Distance | 3.250 INCHES IN |
| Opening Pressure Setting | 60.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.438 INCHES FIRST END 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 |
|---|---|
| C13374 1IN150LB 1X0 SET60PSI PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-181-8636 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-181-8636 has 1 manufacturer part number on file: C13374 1IN150LB 1X0 SET60PSI (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
Key specifications for C13374 1IN150LB 1X0 SET60PSI: Flow Control Device: DISK; Bolt Circle Nominal Diameter: 3.125 INCHES FIRST END IN; Bolt Hole Nominal Diameter: 0.562 INCHES FIRST END IN; Valve Size: 1.000 INCHES IN. 11 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.