Acquisition method (AMC)
3
FSC 4820 × VALVE,VACUUM BREAKING
VALVE,VACUUM BREAKING
4820-01-643-9507 FSC 4820
NSN 4820-01-643-9507 (also written 4820016439507; NIIN 01-643-9507) is a valve, vacuum breaking in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Aug 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 |
|---|---|
| FIRST END NOMINAL PIPE SIZE ACCOMMODATED ACLG | INCHES 1.0 |
| MEDIA FOR WHICH DESIGNED MEDA | LOCATION NOT OTHERWISE SPECIFIED WATER, FRESH |
| END ITEM IDENTIFICATION AGAV | VALVE, PRESSURE |
| BODY STYLE AAQL | — |
| FLOW CONTROL DEVICE ADQU | DISK, TOP GUIDED |
| FIRST END CONNECTION TYPE ACKM | THREADED INTERNAL PIPE |
| TEMP RATING ABJH | FAHRENHEIT 180.0 |
| SPECIAL FEATURES FEAT | MAX WORKING PRESSURE: 125PSI |
| MATERIAL MATT | BODY COPPER ALLOY |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | HOT OR COLD WATER ANTI-SIPHON VACUUM BREAKER |
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 |
|---|---|---|
| 0792040 | 79227 | WATTS REGULATOR COMPANY |
| 1 LF288AM4 | 79227 | WATTS REGULATOR COMPANY |
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
—
Purchases
0
Total spend
—
Aug 26, 2026
Last purchased
1 · 1.0/yr
Purchase records
$5,993
Total demand
$5,993
Latest award total
Purchase history
No priced purchases on record for this NSN yet.
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 |
|---|---|---|---|---|
| Aug 26, 2026 | SPE7M126V108M ↗ | KAMPI COMPONENTS CO INC | — | $5,993 |
Demand history
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
KAMPI COMPONENTS CO INC
last award Aug 2026
WATTS REGULATOR COMPANY
no award yet
no awards on record
Listed source KAMPI COMPONENTS CO INC won the only award on record. KAMPI COMPONENTS CO INC won without being a listed source.
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 28, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-28.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,VACUUM BREAKING." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-643-9507/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-643-9507/