Acquisition method (AMC)
1
FSC 4820 × PISTON,VALVE
PISTON,VALVE
4820-01-442-8532 FSC 4820
NSN 4820-01-442-8532 (also written 4820014428532; NIIN 01-442-8532) is a piston, valve in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Oct 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)
G
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC G: the government has a complete data package and the rights to use it. 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 |
|---|---|
| INSIDE DIAMETER AARX | INCHES NOMINAL 0.656 |
| OUTSIDE DIAMETER ABHE | INCHES NOMINAL 1.094 |
| OVERALL LENGTH ABHP | INCHES NOMINAL 0.706 |
| END ITEM IDENTIFICATION AGAV | 3805-01-431-1165; SHIP, OHIO CLASS SSN (TRIDENT) |
| VALVE TYPE FOR WHICH DESIGNED BTNZ | VALVE EQUALIZING |
| FEATURES PROVIDED CBBL | THREADED |
| VALVE SIZE FOR WHICH DESIGNED CXBX | INCHES 0.500 |
| VALVE DESIGN CONTROL ACTIVITY CYDX | 23798 |
| VALVE MODEL NUMBER FOR WHICH DESIGNED CYDY | E-1 |
| MATERIAL MATT | COPPER ALLOY |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | ASSN STD SINGLE MATERIAL RESPONSE AST- B144 ALLOY 3B |
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 |
|---|---|---|
| BMC3479 | 23798 | BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746 |
| BMC3479 PART 12 | 23798 | BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746 |
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
$38.00
Purchases
1
Total spend
$2,280
Oct 13, 2026
Last purchased
2 · 2.0/yr
Purchase records
$4,560
Total demand
$38.00
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 13, 2026 | 60 | $38.00 | $2,280 | CTN MACHINING LLC (5EA15) | 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 |
|---|---|---|---|---|
| Oct 13, 2026 | SPE7M427P0233 ↗ | — | — | $2,280 |
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
CTN MACHINING LLC
last award Oct 2026
BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746
no award yet
no awards on record
Listed source CTN MACHINING LLC won the only award on record. CTN MACHINING LLC won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M4-26-T-333E | Aug 13, 2026 | Aug 24, 2026 | 60 | 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: 2026-10-14.
- Full methodology →
Cite this page
Citation
NSN Explorer. "PISTON,VALVE." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-442-8532/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-442-8532/