Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-339-7822 FSC 4820
NSN 4820-01-339-7822 (also written 4820013397822; NIIN 01-339-7822) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is 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 |
|---|---|
| THREAD CLASS AAJD | 3B |
| THREAD CLASS AAJD | 3A |
| THREAD DIRECTION AAJF | ALL ENDS RIGHT-HAND |
| FLOW CONTROL DEVICE ADQU | POPPET |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 275.0 |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| CONNECTION TYPE AWLS | SECOND END THREADED INTERNAL BOSS |
| CONNECTION TYPE AWLS | FIRST END THREADED EXTERNAL TUBE |
| THREAD QUANTITY PER INCH CMLP | 20 |
| ADJUSTABLE PRESSURE RANGE CQCY | POUNDS PER SQUARE INCH 680.0 TO 1210.0 |
| NOMINAL THREAD SIZE CQJX | ALL ENDS INCHES 0.438 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 2500.0 |
| SEAT ANGLE CQRB | FIRST END DEGREES 37.0 |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 1150.0 |
| MATERIAL MATT | BODY ALUMINUM ALLOY 2024 |
| MEDIA FOR WHICH DESIGNED MEDA | FOURTH RESPONSE NITROGEN, GASEOUS |
| MEDIA FOR WHICH DESIGNED MEDA | THIRD RESPONSE OIL, HYDRAULIC |
| MEDIA FOR WHICH DESIGNED MEDA | FIFTH RESPONSE WATER, FRESH |
| MEDIA FOR WHICH DESIGNED MEDA | FIRST RESPONSE AIR |
| MEDIA FOR WHICH DESIGNED MEDA | SECOND RESPONSE HELIUM |
| STYLE DESIGNATOR STYL | — |
| THREAD SERIES DESIGNATOR THSD | SECOND END UNF |
| THREAD SERIES DESIGNATOR THSD | FIRST END UNIFIED NATIONAL JOINT FINE (UNJF) |
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 |
|---|---|---|
| 5159A-4TB-1150 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC |
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 — 2 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
Buying rhythm
How often does the government buy this item, and how long since the last time? Every solicitation and award on one line.
Dot size shows quantity. A faint bar joins a solicitation to the award made against it.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-27-T-1041 | Oct 23, 2026 | Nov 2, 2026 | 14 | Expired | View at DIBBS → |
| SPE7M2-26-U-0438 | Aug 28, 2026 | Sep 16, 2026 | 33 | 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,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-339-7822/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-339-7822/