# NSN 4820-01-571-5503: Valve, Stop-Check

NSN 4820-01-571-5503 (also written 4820015715503; NIIN 01-571-5503) is a valve, stop-check in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. The government has 1 open solicitation for it.

## Identification

- NSN: 4820-01-571-5503 (4820015715503)
- NIIN: 01-571-5503 (015715503)
- Item name: VALVE,STOP-CHECK
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-13)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE CELSIUS 121.0 |
| AGAV | END ITEM IDENTIFICATION | DIGITAL OPTS |
| AQLR | VALVE OPERATION METHOD | MANUAL |
| AWLS | CONNECTION TYPE | ALL ENDS THREADED INTERNAL PIPE |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 5000.0 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | VALVE SHUT OFF RETURN |
| FEAT | SPECIAL FEATURES | OPERATING TEMP; MINUS 40 DEGREES F TO PLUS 250 DEGREES F; .750 THREAD LENGTH 16 PER INCH; UNF SERIES |
| MATT | MATERIAL | FLOW CONTROL DEVICE ZINC ALLOY |
| MATT | MATERIAL | SEAT STEEL COMP 416 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| MV820SXB092 | 56529 | HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE7MC-27-T-0590 | 2 | 2026-10-23 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015715503&category=nsn) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-16 | $696.34 | 2 | HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015715503) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-16 | [SPE7MC27V0235](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015715503) | VALVE, STOP-CHECK | HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC | $1,392.68 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015715503&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015715503
- 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/4820-01-571-5503/
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