Acquisition method (AMC)
3
FSC 4820 × SEAT,VALVE
SEAT,VALVE
4820-00-445-4422 FSC 4820
NSN 4820-00-445-4422 (also written 4820004454422; NIIN 00-445-4422) is a seat, valve in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 1 supplier are on record. It was last purchased in Sep 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)
C
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC C: needs engineering source approval; other sources must qualify first. 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 |
|---|---|
| STYLE DESIGNATOR STYL | — |
| SEATING SURFACE SHAPE CQKM | ANGULAR |
| BODY OUTSIDE DIAMETER ADAR | INCHES MINIMUM 0.429 AND INCHES MAXIMUM 0.430 |
| OVERALL HEIGHT ABKW | INCHES MINIMUM 0.048 AND INCHES MAXIMUM 0.050 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL---20693 |
| MATERIAL MATT | OVERALL FABRIC, NYLON |
| SEAT ANGLE IN DEG AJSG | NOMINAL 90.000 |
| BODY INSIDE DIAMETER ADAS | INCHES MINIMUM 0.257 AND INCHES MAXIMUM 0.258 |
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 |
|---|---|---|
| 183228-0081 | 99657 | MAROTTA CONTROLS INC |
| 183228-81 | 99657 | MAROTTA CONTROLS INC |
| 239029-4342 ITEM NO. 16 | 99657 | MAROTTA CONTROLS INC |
| 280566PC16 | 99657 | MAROTTA CONTROLS 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
$523.00
Purchases
1
Total spend
$10,460
Sep 21, 2026
Last purchased
2 · 2.0/yr
Purchase records
$20,920
Total demand
$523.00
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Sep 21, 2026 | 20 | $523.00 | $10,460 | MAROTTA CONTROLS INC (99657) | 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 |
|---|---|---|---|---|
| Sep 21, 2026 | SPE7M426V5782 ↗ | MAROTTA CONTROLS INC | — | $10,460 |
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
MAROTTA CONTROLS INC
last award Sep 2026
MAROTTA CONTROLS INC won the only award on record.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M4-26-T-388Q | Sep 11, 2026 | Sep 21, 2026 | 20 | 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: 2026-10-05.
- Full methodology →
Cite this page
Citation
NSN Explorer. "SEAT,VALVE." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-00-445-4422/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-00-445-4422/