The Valve,safety Relief, cataloged under National Stock Number 4820-01-735-8697, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is On Site Gas Systems Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-735-8697 |
| Primary Part Number | KSV10-1/4-150 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | On Site Gas Systems Inc |
| Status | ACTIVE |
| Material Document and Classification | ASTM B16 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B16 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY STEM |
| Material | RUBBER SILICONE CLASS Q DISK |
| Thread Series Designator | NPT SECOND END |
| 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 |
|---|---|
| KSV10-1/4-150 PRIMARY | On Site Gas Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| S9593GDMMO022TBL7-158FIG5-767-PS | 5/1 Secondary reference Pyrogenesis Inc. |
NSN 4820-01-735-8697 is a Valve,safety Relief, manufactured by On Site Gas Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-735-8697 has 1 manufacturer part number on file: KSV10-1/4-150 (On Site Gas Systems Inc).
Key specifications for KSV10-1/4-150: Material Document and Classification: ASTM B16 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE BODY; Material Document and Classification: ASTM B16 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE STEM; Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL SINGLE RESPONSE LBS; Nominal Thread Size: 0.250 INCHES SECOND END 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.