Acquisition method (AMC)
3
FSC 4820 × VALVE,CHECK
VALVE,CHECK
4820-01-439-7241 FSC 4820
NSN 4820-01-439-7241 (also written 4820014397241; NIIN 01-439-7241) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 6 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 to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
L
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC L: annual buy value is below the screening threshold. 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 |
|---|---|
| THREAD CLASS AAJD | 2B |
| THREAD DIRECTION AAJF | ALL ENDS RIGHT-HAND |
| END ITEM IDENTIFICATION AGAV | GENERATOR LUBRICATION SYSTEM ASSY;ALLISON ENGINE CO.INC,DWG NO.23059009 |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| CONNECTION TYPE AWLS | ALL ENDS THREADED INTERNAL BOSS |
| MOUNTING POSITION BBJX | HORIZONTAL OR VERTICAL |
| NOMINAL THREAD SIZE CQJX | ALL ENDS INCHES 0.750 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 8500.0 |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 0.5 |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED CWFD | ALL ENDS INCHES 0.500 |
| SPECIAL FEATURES FEAT | O/A LG 2.470 IN. |
| MATERIAL MATT | SEAT RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM |
| PROPRIETARY CHARACTERISTICS PRPY | PACS |
| STYLE DESIGNATOR STYL | — |
| THREAD SERIES DESIGNATOR THSD | ALL ENDS UNF |
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 |
|---|---|---|
| 23059009 | 63005 | ROLLS-ROYCE CORPORATION |
| 23059009 ITEM 38 | 63005 | ROLLS-ROYCE CORPORATION |
| 23059087 | 63005 | ROLLS-ROYCE CORPORATION |
| 23059087-03 | 63005 | ROLLS-ROYCE CORPORATION |
| TCVF-0500-SS-V-1/2 | 28396 | INTERNATIONAL VALVE CORP DBA CHECK-ALL VALVE MFG. CO. |
| TFDSSVT.500SS | 28396 | INTERNATIONAL VALVE CORP DBA CHECK-ALL VALVE MFG. CO. |
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
$181.95
Purchases
1
Total spend
$2,365
Sep 16, 2026
Last purchased
1 · 1.0/yr
Purchase records
$2,365
Total demand
$181.95
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | 13 | $181.95 | $2,365 | PHOENIX TRADING INC. (4LF36) | 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.
No related contract actions on record.
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
PHOENIX TRADING INC.
last award Sep 2026
INTERNATIONAL VALVE CORP DBA CHECK-ALL VALVE MFG. CO.
no award yet
no awards on record
Listed source ROLLS-ROYCE CORPORATION
no award yet
no awards on record
Listed source PHOENIX TRADING INC. won the only award on record. PHOENIX TRADING INC. won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A5-26-T-417L | Sep 10, 2026 | Sep 17, 2026 | 13 | 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. "VALVE,CHECK." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-439-7241/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-439-7241/