Acquisition method (AMC)
1
FSC 4820 × VALVE,CHECK
VALVE,CHECK
4820-00-123-4230 FSC 4820
NSN 4820-00-123-4230 (also written 4820001234230; NIIN 00-123-4230) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 5 manufacturer part numbers from 4 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 1).
Suffix (AMSC)
B
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC B: must be bought from the sources named on a source control or selected item drawing. 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 | FIRST END THREADED EXTERNAL TUBE |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| THREAD CLASS AAJD | 3A |
| THREAD DIRECTION AAJF | FIRST END RIGHT-HAND |
| FLOW CONTROL DEVICE ADQU | POPPET |
| DISK LOADING METHOD ADSU | SPRING |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 500.0 |
| CONNECTION STYLE AHNC | — |
| STYLE DESIGNATOR STYL | — |
| THREAD SERIES DESIGNATOR THSD | FIRST END UNF |
| SURFACE TREATMENT SFTT | ANODIZE |
| MOUNTING POSITION BBJX | HORIZONTAL OR VERTICAL |
| NOMINAL THREAD SIZE CQJX | FIRST END INCHES 0.438 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 80.0 |
| SEAT ANGLE CQRB | FIRST END DEGREES 37.0 |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED CWFD | FIRST END INCHES 0.250 |
| MATERIAL MATT | OVERALL ALUMINUM ALLOY |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE AIR |
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 |
|---|---|---|
| 294A-4TT-0.5 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC |
| 32765 | 24235 | WILLIAMS INTERNATIONAL CO., L.L.C. |
| 3C2196-5 | 99240 | CRISSAIR INC DIV ESCO TECHNOLOGIES |
| 3C2196-7 | 99240 | CRISSAIR INC DIV ESCO TECHNOLOGIES |
| 58555-5 | 77646 | NORTHROP GRUMMAN SYSTEMS CORPORATION DBA AEROSPACE SYSTEMS DIV AERONAUTICS SYSTEMS |
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
$1,097.01
Purchases
1
Total spend
$40,589
Sep 29, 2026
Last purchased
2 · 2.0/yr
Purchase records
$81,179
Total demand
$1,097.01
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Sep 29, 2026 | 37 | $1,097.01 | $40,589 | TRANSAERO, INC. (27541) | 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 29, 2026 | SPE7M126V161Q ↗ | TRANSAERO, INC. | — | $40,589 |
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
TRANSAERO, INC.
last award Sep 2026
CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC
no award yet
no awards on record
Listed source CRISSAIR INC DIV ESCO TECHNOLOGIES
no award yet
no awards on record
Listed source NORTHROP GRUMMAN SYSTEMS CORPORATION DBA AEROSPACE SYSTEMS DIV AERONAUTICS SYSTEMS
no award yet
no awards on record
Listed source WILLIAMS INTERNATIONAL CO., L.L.C.
no award yet
no awards on record
Listed source TRANSAERO, INC. won the only award on record. TRANSAERO, INC. won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M1-26-T-326T | Sep 4, 2026 | Sep 14, 2026 | 37 | 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: 2026-10-04.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,CHECK." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-00-123-4230/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-00-123-4230/