The Valve,safety Relief, cataloged under National Stock Number 4820-00-300-7767, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Puget Sound Commerce Center, Inc.. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 30 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-300-7767 |
| Primary Part Number | 32655-1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Puget Sound Commerce Center, Inc. |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +40.0 TO 140.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRING |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | INTEGRAL |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Material | COPPER ALLOY SEAT |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| H502 | Monarch Mfg Works Inc (USA) |
| 32655-1 PRIMARY | Puget Sound Commerce Center, Inc. (USA) |
| 44669SHEET6 PRIMARY | Puget Sound Commerce Center, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3-1601APC28 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| C713FPC51 | 5/9 Secondary reference Ames Iron Works |
| 3-858HPC28 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| 3-1569APC28 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| 671APC51 | 5/9 Secondary reference Ames Iron Works |
| 44669SHEET6PC182 | 5/9 Secondary reference Todd Shipyards Corp |
| 3-1425APC28 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| 3-1409CPC28 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| 3-1696APC28 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| 904167 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| 3-1569BPC28 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| G49BR | 5/9 Secondary reference Monarch Mfg Works Inc |
| 1-4SVB15X1 | 5/9 Secondary reference Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co. |
| 1-4SVB15X1 | C/1 Advisory reference — outside the item-of-supply concept Ames Iron Works |
| 817-25 | 5/9 Secondary reference Aqua-Chem Inc Cleaver-Brooks Div |
| 6421B2PC51 | 5/9 Secondary reference Ames Iron Works |
| A1PC51 | 5/9 Secondary reference Ames Iron Works |
| 11039M0G49BR100 | 5/9 Secondary reference Ames Iron Works |
| G49BR | 5/9 Secondary reference Todd Shipyards Corp |
| G49BR1-4 | 5/9 Secondary reference Monarch Mfg Works Inc |
NSN 4820-00-300-7767 is a Valve,safety Relief, manufactured by Puget Sound Commerce Center, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-300-7767 has 3 manufacturer part numbers on file: H502 (Monarch Mfg Works Inc), 32655-1 (Puget Sound Commerce Center, Inc.), 44669SHEET6 (Puget Sound Commerce Center, Inc.).
5 possible matches (shared part number, not a government interchangeability claim): 5120-01-211-3303, 6665-01-233-2599, 4730-01-307-1980. Verify interchangeability with system specifications before substitution.
Key specifications for 32655-1: Flow Control Device: DISK; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: ANGLE. 18 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.