# NSN 4820-01-728-6178: Valve, Regulating, System Pressure

NSN 4820-01-728-6178 (also written 4820017286178; NIIN 01-728-6178) is a valve, regulating, system pressure in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4820-01-728-6178 (4820017286178)
- NIIN: 01-728-6178 (017286178)
- Item name: VALVE,REGULATING,SYSTEM PRESSURE
- Federal Supply Class: [FSC 4820 Valves, Nonpowered](https://nsnexplorer.com/fsc/4820/)
- Federal Supply Group: [FSG 48](https://nsnexplorer.com/group/48/)
- Acquisition method suffix code: AMSC Q: the government lacks adequate data or rights, but breakout to competition is expected. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AEVA | OUTLET PRESSURE RANGE | POUNDS PER SQUARE INCH (PSI) 0.0 TO 350.0 |
| AEVN | REGULATION TYPE | MANUAL SINGLE STAGE |
| AEVQ | VALVE STEM DESIGN | SINGLE SEAT |
| AEVR | VALVE LOADING METHOD | BELLOWS |
| AEVZ | MAXIMUM INLET PRESSURE RATING | POUNDS PER SQUARE INCH (PSI) 350.0 |
| ADQU | FLOW CONTROL DEVICE | STEM AND INTEGRAL DISK |
| ADQZ | END CONNECTION QUANTITY | 1 |
| ADZJ | MOUNTING FACILITY | INTERNAL THREAD |
| AAQL | BODY STYLE | — |
| ADQM | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | INCHES NOMINAL 1.81 |
| ADQN | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | INCHES NOMINAL 1.81 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | CAPACITY COMPRESSOR VALVE |
| FEAT | SPECIAL FEATURES | OVERALL LENGTH 9.03 INCH;OVERALL HEIGHT 3.38 INCH;OVERALL WIDTH 3.50 INCH;SERVICE REFRIGERANT HFC-134A;VALVE WEIGHT 9.8 POUNDS |
| MEDA | MEDIA FOR WHICH DESIGNED | REFRIGERANT, NONCORROSIVE |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |
| CCFG | VALVE SIZE | INCHES 1.50 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| M4637-3079 | 0ASY6 | DERBYSHIRE MARINE PRODUCTS, LLC DBA DERBYSHIRE MARINE PRODUCTS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MPL3079 | 0ASY6 | DERBYSHIRE MARINE PRODUCTS, LLC DBA DERBYSHIRE MARINE PRODUCTS LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-06 | $7,889.05 | 2 | DERBYSHIRE MARINE PRODUCTS, LLC DBA DERBYSHIRE MARINE PRODUCTS LLC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820017286178) |
| 2026-09-22 | $7,889.05 | 3 | DERBYSHIRE MARINE PRODUCTS, LLC DBA DERBYSHIRE MARINE PRODUCTS LLC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820017286178) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-06 | [SPE7MC27V0085](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820017286178) | VALVE, REGULATING, SYSTEM PRESSURE | DERBYSHIRE MARINE PRODUCTS, LLC DBA DERBYSHIRE MARINE PRODUCTS LLC | $15,778.10 |
| 2026-09-22 | [SPE7MC26V4521](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820017286178) | VALVE, REGULATING, SYSTEM PRESSURE | DERBYSHIRE MARINE PRODUCTS, LLC DBA DERBYSHIRE MARINE PRODUCTS LLC | $23,667.15 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820017286178&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820017286178
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4820-01-728-6178/
JSON: https://nsnexplorer.com/api/nsn/4820-01-728-6178.json