Acquisition method (AMC)
3
FSC 4820 × VALVE,STOP-CHECK
VALVE,STOP-CHECK
4820-01-675-0781 FSC 4820
NSN 4820-01-675-0781 (also written 4820016750781; NIIN 01-675-0781) is a valve, stop-check in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Nov 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
Q
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC Q: the government lacks adequate data or rights, but breakout to competition is expected. 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 |
|---|---|
| CONNECTION TYPE AWLS | ALL ENDS UNTHREADED INTERNAL PIPE |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| STYLE DESIGNATOR STYL | — |
| FLOW CONTROL DEVICE ADQU | DISK |
| MAXIMUM OPERATING TEMP AEHZ | FIRST RESPONSE FAHRENHEIT 425.0 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | SWING CHECK VALVE; |
| MATERIAL MATT | BODY COPPER ALLOY |
| MATERIAL MATT | FLOW CONTROL DEVICE NICKEL ALLOY |
| MAXIMUM OPERATING TEMP AEHZ | SECOND RESPONSE FAHRENHEIT 150.0 |
| OPERATING PRESSURE CQQF | FIRST RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 200.0 |
| OPERATING PRESSURE CQQF | SECOND RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 400.0 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | BODY ASSN STD SINGLE MATERIAL RESPONSE AST- B61 |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE WATER-OIL-GAS |
| VALVE SIZE CCFG | INCHES 1.00 |
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 |
|---|---|---|
| 414501.200 | 4YUS3 | W. & O. SUPPLY, INC. DIV MOBILE |
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
$929.15
Purchases
1
Total spend
$929.15
Nov 2, 2026
Last purchased
2 · 2.0/yr
Purchase records
$1,858
Total demand
$929.15
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Nov 2, 2026 | 1 | $929.15 | $929.15 | W & O SUPPLY INC (1QP40) | 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 |
|---|---|---|---|---|
| Nov 2, 2026 | SPE7M127V1382 ↗ | W & O SUPPLY INC | — | $929.15 |
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
W & O SUPPLY INC
last award Nov 2026
W. & O. SUPPLY, INC. DIV MOBILE
no award yet
no awards on record
Listed source W & O SUPPLY INC won the only award on record. W & O SUPPLY INC won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-27-T-0309 | Oct 9, 2026 | Oct 22, 2026 | 1 | Expired | 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 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-11-03.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,STOP-CHECK." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-675-0781/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-675-0781/