The Valve,safety Relief, cataloged under National Stock Number 4820-01-618-9372, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circle Valve Technologies Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-618-9372 |
| Primary Part Number | M5132B-4M-10 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circle Valve Technologies Inc |
| Status | ACTIVE |
| Style Designator | SCREW-IN CARTRIDGE |
| Valve Size | 0.500 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Bonnet Attachment Method | WELDED |
| Material | COPPER ALLOY OVERALL |
| Opening Pressure Setting | 10.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| M5132B-4M-10 | Circle Valve Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 506-8418058 ITEM 14 | 5/1 Secondary reference Naval Sea Systems Command |
| M5132B-4M-10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-618-9372 is a Valve,safety Relief, manufactured by Circle Valve Technologies Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-618-9372 has 1 manufacturer part number on file: M5132B-4M-10 (Circle Valve Technologies Inc).
Key specifications for M5132B-4M-10: Style Designator: SCREW-IN CARTRIDGE; Valve Size: 0.500 INCHES IN; Bonnet Type: INSIDE SCREW; Bonnet Attachment Method: WELDED. 7 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.