The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-287-4016, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rockwood Swendeman. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-287-4016 |
| Primary Part Number | 770NDGG-N |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rockwood Swendeman |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| Second End Nominal Pipe Size Accommodated | 1.500 INCHES IN |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| First End Nominal Pipe Size Accommodated | 1.500 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY STEM |
| Material | COPPER ALLOY SEAT |
| Material | COPPER AND COPPER ALLOY FLOW CONTROL DEVICE |
| Second End Connection Type | THREADED EXTERNAL PIPE |
| Adjustable Pressure Range | 190.0 TO 229.0 CAMERA MOUNT |
| 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 |
|---|---|
| 770NDGG-N PRIMARY | Rockwood Swendeman (USA) |
| Reference | Meaning |
|---|---|
| 510A2236 ITEM 10 | 5/9 Secondary reference Tyco Fire Products Lp |
| 510A2236 ITEM 10 | 5/9 Secondary reference Rockwood Swendeman |
| 508-0013-21 | 5/9 Secondary reference Tyco Fire Products Lp |
| 508-0013-21 | 5/9 Secondary reference Rockwood Swendeman |
NSN 4820-01-287-4016 is a Valve,relief,pressure and Temper, manufactured by Rockwood Swendeman, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-287-4016 has 1 manufacturer part number on file: 770NDGG-N (Rockwood Swendeman).
Key specifications for 770NDGG-N: First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Body Style: ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS; Second End Nominal Pipe Size Accommodated: 1.500 INCHES IN. 15 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.