Acquisition method (AMC)
3
FSC 4820 × VALVE,STOP-CHECK
VALVE,STOP-CHECK
4820-01-571-5503 FSC 4820
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.
Open for bid
1 open solicitation on record right now — quantity, close date, and where to submit.
| Solicitation | Qty | Status | |
|---|---|---|---|
| SPE7MC-27-T-0590 | 2 | Closes in 4d | Bid → |
Can you win it?
This item is coded to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
D
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE CELSIUS 121.0 |
| END ITEM IDENTIFICATION AGAV | DIGITAL OPTS |
| VALVE OPERATION METHOD AQLR | MANUAL |
| CONNECTION TYPE AWLS | ALL ENDS THREADED INTERNAL PIPE |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 5000.0 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | VALVE SHUT OFF RETURN |
| SPECIAL FEATURES FEAT | OPERATING TEMP; MINUS 40 DEGREES F TO PLUS 250 DEGREES F; .750 THREAD LENGTH 16 PER INCH; UNF SERIES |
| MATERIAL MATT | FLOW CONTROL DEVICE ZINC ALLOY |
| MATERIAL MATT | SEAT STEEL COMP 416 |
| STYLE DESIGNATOR STYL | — |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| MV820SXB092 | 56529 | HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
$696.34
Purchases
1
Total spend
$1,393
Oct 16, 2026
Last purchased
2 · 2.0/yr
Purchase records
$2,785
Total demand
$696.34
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 16, 2026 | 2 | $696.34 | $1,393 | HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC (56529) | Unknown | Source ↗ |
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Oct 16, 2026 | SPE7MC27V0235 ↗ | HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC | — | $1,393 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 1 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
Who wins this item
Does one supplier win this every time, and are the winners on the listed-source list? One dot per award.
- Award in the last 2 years
- Older award
HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC
last award Oct 2026
HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC won the only award on record.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-27-T-0590 | Oct 13, 2026 | Oct 23, 2026 | 2 | Open | View at DIBBS → |
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 13, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-17.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,STOP-CHECK." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-571-5503/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-571-5503/