Acquisition method (AMC)
2
FSC 4820 × SEAT,VALVE
SEAT,VALVE
4820-01-573-7919 FSC 4820
NSN 4820-01-573-7919 (also written 4820015737919; NIIN 01-573-7919) is a seat, valve in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 2 suppliers 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 as suitable for competitive acquisition (AMC 2).
Suffix (AMSC)
R
Competition
Coded for competition
AMC 2: suitable for competitive acquisition, first time. AMSC R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. 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 |
|---|---|
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL MFR REF SINGLE MATERIAL RESPONSE TORLON 4203L AS -FGD BY A-OCO CHE-ICAL COR OR MFR REF SINGLE MATERIAL RESPONSE ULTE- 1000 AS -FGD BY GENERAL ELECTRIC CO-ANY |
| MATERIAL MATT | OVERALL PLASTIC |
| OVERALL HEIGHT ABKW | INCHES NOMINAL 0.259 |
| BODY OUTSIDE DIAMETER ADAR | INCHES NOMINAL 1.062 |
| BODY INSIDE DIAMETER ADAS | INCHES NOMINAL 0.562 |
| END ITEM IDENTIFICATION AGAV | 4820-01-259-1319, P/N 259089 ASSY A; 4820-01-273-4722, BALL VALVE, P/N 258850 ASST D MOD A-B PLAIN |
| SEATING SURFACE SHAPE CQKM | RADIAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | SEAT - 1-WAY SEAL 0-4500 PSI W.P. |
| 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 |
|---|---|---|
| 255669 PC 3 TORLON 4203 | 71905 | DERBYSHIRE MACHINE & TOOL CO |
| 255669 PC 3 TORLON 4203L | 43689 | HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING |
| 258850 ITEM 85 TORLON 4203L | 43689 | HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING |
| 259089 ITEM 14 TORLON 4203L | 43689 | HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING |
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
—
Sep 16, 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 |
|---|---|---|---|---|
| Sep 16, 2026 | SPE7MC26P2727 ↗ | FLUIDYNE CORPORATION DBA FLUIDYNE CORP | — | $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
FLUIDYNE CORPORATION DBA FLUIDYNE CORP
last award Sep 2026
DERBYSHIRE MACHINE & TOOL CO
no award yet
no awards on record
Listed source HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING
no award yet
no awards on record
Listed source FLUIDYNE CORPORATION DBA FLUIDYNE CORP won the only award on record. FLUIDYNE CORPORATION DBA FLUIDYNE CORP 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 20, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-20.
- Full methodology →
Cite this page
Citation
NSN Explorer. "SEAT,VALVE." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-573-7919/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-573-7919/