Acquisition method (AMC)
3
FSC 4820 × VALVE,DIAPHRAGM,STOP
VALVE,DIAPHRAGM,STOP
4820-01-438-2684 FSC 4820
NSN 4820-01-438-2684 (also written 4820014382684; NIIN 01-438-2684) is a valve, diaphragm, stop in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 1 supplier are on record. No purchases are on record yet.
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)
C
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC C: needs engineering source approval; other sources must qualify first. 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 |
|---|---|
| BOLT HOLE QUANTITY AECS | 8 |
| END ITEM IDENTIFICATION AGAV | ARLEIGH BURKE CLASS DDG |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| FLANGE SHAPE ARKN | ALL ENDS ROUND WITH HOLES |
| CONNECTION TYPE AWLS | ALL ENDS FLANGE |
| VALVE SIZE CCFG | INCHES 4.000 |
| NOMINAL OUTSIDE DIAMETER CWCD | ALL ENDS INCHES 9.000 |
| FACE TO FACE DISTANCE CWCF | INCHES 15.000 |
| NOMINAL THICKNESS CWCK | ALL ENDS INCHES 0.940 |
| BOLT HOLE NOMINAL DIAMETER CWCQ | ALL ENDS INCHES 0.750 |
| BOLT CIRCLE NOMINAL DIAMETER CWCT | ALL ENDS INCHES 7.500 |
| FLANGE FACE DESIGN CWDF | ALL ENDS RAISED STRAIGHT |
| RAISED FACE NOMINAL HEIGHT CWDH | ALL ENDS INCHES 0.062 |
| RAISED FACE NOMINAL DIAMETER CWDL | ALL ENDS INCHES 6.190 |
| MATERIAL MATT | BODY STEEL UNS J03002 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | BODY ASSN STD SINGLE MATERIAL RESPONSE AST- A216, GRADE WCB |
| PROPRIETARY CHARACTERISTICS PRPY | PACS |
| 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 |
|---|---|---|
| 50M-1-93611-02C | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO |
| 50M-1-96311-02C | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO |
| 96311 | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO |
| 96311-02C | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL 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
—
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-26-T-309C | Sep 30, 2026 | Oct 16, 2026 | 10 | 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.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,DIAPHRAGM,STOP." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-438-2684/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-438-2684/