Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-286-6618 FSC 4820
NSN 4820-01-286-6618 (also written 4820012866618; NIIN 01-286-6618) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 2 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-0724 | 1 | Closes in 7d | Bid → |
Can you win it?
This item is coded to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
D
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. 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 |
|---|---|
| FLOW CONTROL DEVICE ADQU | DISK |
| BONNET TYPE ADSR | INSIDE SCREW |
| BONNET ATTACHMENT METHOD ADST | BOLTED |
| BOLT HOLE QUANTITY AECS | 4 |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 250.0 |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| FLANGE SHAPE ARKN | ALL ENDS ROUND WITH HOLES |
| CONNECTION TYPE AWLS | ALL ENDS FLANGE |
| VALVE SIZE CCFG | INCHES 1.500 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 300.0 |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 100.0 |
| NOMINAL OUTSIDE DIAMETER CWCD | FIRST END INCHES 6.000 |
| NOMINAL OUTSIDE DIAMETER CWCD | SECOND END INCHES 5.000 |
| NOMINAL THICKNESS CWCK | SECOND END INCHES 0.562 |
| NOMINAL THICKNESS CWCK | FIRST END INCHES 0.625 |
| FIRST CONNECTION FACE TO CENTERLINE DISTANCE CWCL | INCHES 3.750 |
| BOLT HOLE NOMINAL DIAMETER CWCQ | FIRST END INCHES 0.750 |
| BOLT HOLE NOMINAL DIAMETER CWCQ | SECOND END INCHES 0.625 |
| SECOND CONNECTION FACE TO CENTERLINE DISTANCE CWCR | INCHES 3.750 |
| BOLT CIRCLE NOMINAL DIAMETER CWCT | FIRST END INCHES 4.750 |
| BOLT CIRCLE NOMINAL DIAMETER CWCT | SECOND END INCHES 3.875 |
| FLANGE FACE DESIGN CWDF | ALL ENDS RAISED STRAIGHT |
| RAISED FACE NOMINAL HEIGHT CWDH | ALL ENDS INCHES 0.062 |
| RAISED FACE NOMINAL DIAMETER CWDL | FIRST END INCHES 3.625 |
| RAISED FACE NOMINAL DIAMETER CWDL | SECOND END INCHES 2.875 |
| MATERIAL MATT | FLOW CONTROL DEVICE NICKEL ALLOY |
| MATERIAL MATT | SEAT NICKEL ALLOY |
| MATERIAL MATT | BODY STEEL |
| MATERIAL MATT | STEM STEEL CORROSION RESISTING |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE WATER-OIL-GAS |
| 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 |
|---|---|---|
| D50379-AH-CS1 | 11859 | HUNT VALVE COMPANY, INC. |
| D50379-AH-CS1 | 34889 | HUNT VALVE COMPANY INC DBA UNION FLONETICS |
| R10AH5J5AH-CS1 | 34889 | HUNT VALVE COMPANY INC DBA UNION FLONETICS |
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-0724 | Oct 15, 2026 | Oct 26, 2026 | 1 | 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 15, 2026.
- Contract action totals: USAspending, context only.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-286-6618/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-286-6618/