Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-517-4795 FSC 4820
NSN 4820-01-517-4795 (also written 4820015174795; NIIN 01-517-4795) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 3 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)
Z
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC Z: a commercial, nondevelopmental or off-the-shelf item. 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 DIRECTION AAJF | ALL ENDS RIGHT-HAND |
| FLOW CONTROL DEVICE ADQU | POPPET |
| DISK LOADING METHOD ADSU | SPRING |
| MAXIMUM OPERATING TEMP AEHZ | FIRST RESPONSE FAHRENHEIT -45.0 |
| MAXIMUM OPERATING TEMP AEHZ | SECOND RESPONSE FAHRENHEIT 200.0 |
| END ITEM IDENTIFICATION AGAV | ABLTS; CONSOLE, OPERATORS |
| CONNECTION STYLE AHNC | — |
| NOMINAL LENGTH AKGG | ALL ENDS INCHES 3.250 |
| VALVE OPERATION METHOD AQLR | MANUAL |
| FLANGE SHAPE ARKN | ALL ENDS HEXAGON |
| CONNECTION TYPE AWLS | ALL ENDS THREADED EXTERNAL BOSS |
| THREAD QUANTITY PER INCH CMLP | 16 |
| NOMINAL THREAD SIZE CQJX | ALL ENDS INCHES 0.750 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 5000.0 |
| NOMINAL THICKNESS CWCK | ALL ENDS INCHES 1.500 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | 2-WAY POPPET VALVE, MANUALLY OPERATED |
| SPECIAL FEATURES FEAT | 2-WAY; NORMALLY OPEN; STAINLESS KNOB; NO OVERTRAVEL PROTECTION |
| MATERIAL MATT | BODY ALUMINUM |
| STYLE DESIGNATOR STYL | — |
| THREAD SERIES DESIGNATOR THSD | ALL ENDS NPT |
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 |
|---|---|---|
| 6304524 | 80091 | NAVAL FACILITIES ENGINEERING COMMAND |
| 6304524-5 | 70433 | APPLETON MARINE INC |
| 6304524-5 | 80091 | NAVAL FACILITIES ENGINEERING COMMAND |
| 82H227MOS1SS/S-8502-6 | 8V003 | DOERING 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
$523.05
Purchases
1
Total spend
$1,569
Sep 23, 2026
Last purchased
2 · 2.0/yr
Purchase records
$3,138
Total demand
$523.05
Latest unit price
Purchase history
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 |
|---|---|---|---|---|
| Sep 23, 2026 | SPE7MC26V4580 ↗ | — | — | $1,569 |
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
CAGE 9RU99
last award Sep 2026
APPLETON MARINE INC
no award yet
no awards on record
Listed source DOERING CO
no award yet
no awards on record
Listed source NAVAL FACILITIES ENGINEERING COMMAND
no award yet
no awards on record
Listed source CAGE 9RU99 won the only award on record. CAGE 9RU99 won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-26-T-279P | Sep 17, 2026 | Sep 28, 2026 | 3 | 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,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-517-4795/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-517-4795/