Acquisition method (AMC)
1
FSC 4820 × VALVE,CALIBRATED FLOW
VALVE,CALIBRATED FLOW
4820-01-438-0521 FSC 4820
NSN 4820-01-438-0521 (also written 4820014380521; NIIN 01-438-0521) is a valve, calibrated flow in Federal Supply Class 4820, Valves, Nonpowered. 8 manufacturer part numbers from 3 suppliers are on record. The government has 1 open solicitation for it.
Open for bid
1 open solicitation on record right now — quantity, close date, and where to submit.
| Solicitation | Qty | Status | |
|---|---|---|---|
| SPE7MC-27-T-0507 | 32 | Closes in 4d | Bid → |
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 |
|---|---|
| BODY STYLE AAQL | — |
| FIRST END CONNECTION TYPE ACKM | THREADED EXTERNAL TUBE |
| FIRST END STYLE DESIGNATOR ACKN | — |
| FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED ACLH | INCHES NOMINAL 0.500 |
| FIRST END THREAD CLASS ACLK | 3A |
| FIRST END THREAD DIRECTION ACLL | RIGHT-HAND |
| SECOND END RELATIONSHIP WITH FIRST END ACLR | NOT IDENTICAL |
| SECOND END CONNECTION TYPE ACLS | THREADED EXTERNAL TUBE |
| SECOND END STYLE DESIGNATOR ACLT | — |
| SECOND END OUTSIDE DIAMETER TUBE ACCOMMODATED ACMP | INCHES NOMINAL 0.375 |
| SECOND END THREAD CLASS ACMR | 3A |
| SECOND END THREAD DIRECTION ACMS | RIGHT-HAND |
| FIRST END SEAT ANGLE IN DEG ACTE | 37.0 |
| SECOND END SEAT ANGLE IN DEG ACTF | 37.0 |
| FLOW CONTROL DEVICE ADQU | POPPET |
| END CONNECTION QUANTITY ADQZ | 2 |
| VALVE DISCHARGE FLOW RATE ADSY | GALLONS PER MINUTE 4.25 |
| END ITEM IDENTIFICATION AGAV | TICONDEROGA CLASS CG (47) |
| MATERIAL MATT | BODY STEEL CORROSION RESISTING |
| SURFACE TREATMENT SFTT | OUTSIDE PASSIVATE |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR THDS | FIRST END UNIFIED NATIONAL JOINT FINE (UNJF) 3 TO 4-16 |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR THDS | SECOND END UNIFIED NATIONAL JOINT FINE (UNJF) MODIFIED 9 TO 16-18 |
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 |
|---|---|---|
| 6323384 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| 6323384-22 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| 6323384-6 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| 8941-06 | 98087 | ITT AEROSPACE CONTROLS LLC DBA ITT AEROSPACE CONTROLS UNIT S |
| 8941-6 | 98087 | ITT AEROSPACE CONTROLS LLC DBA ITT AEROSPACE CONTROLS UNIT S |
| 8970-22 | 98087 | ITT AEROSPACE CONTROLS LLC DBA ITT AEROSPACE CONTROLS UNIT S |
| Q2360-05-6 | 98939 | AEROCONTROLEX GROUP, INC. DBA AERO FLUID PRODUCTS |
| Q2360-06-6 | 98939 | AEROCONTROLEX GROUP, INC. DBA AERO FLUID PRODUCTS |
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
—
—
Last purchased
—
Purchase records
—
Total demand
—
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.
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.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-27-T-0507 | Oct 13, 2026 | Oct 23, 2026 | 32 | Open | 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 13, 2026.
- Contract action totals: USAspending, context only.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,CALIBRATED FLOW." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-438-0521/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-438-0521/