Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-474-7838 FSC 4820
NSN 4820-01-474-7838 (also written 4820014747838; NIIN 01-474-7838) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 4 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)
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 |
|---|---|
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 182.0 |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED CWFD | ALL ENDS INCHES 1.000 |
| SPECIAL FEATURES FEAT | NEXT HIGHER ASSEMBLY NSN 5999-01-411-7098, COOLER, FLUID, ELECTRONIC EQUIPMENT. 82 PLUS/MINUS PSI.SUPPGITEM USED IN A HIGH PURITY COOLING SYSTEM. ST BE THOROUGHLY CLEANED AND FREE FROM GREASE, OIL, FLUXES, LIQUID CONTAMINANTS OF ANY KIND AND OTHER FOREIGN MATERIAL SUCH AS METAL CHIPS OR LINT. ALL PORTS AND CONNECTIONS SHALL BE SEALED AND PROTECTED WITH CAPS, PLUGS AND ANY MEANS SUITABLE IN PROHIBITING THE ENTRANCE OF FOREIGN MATERIAL DURING SHIPPING AND STORAGE.AGAVGNSN 1430-01-418-4396, RADAR SET, SEMITRAILER MOUNTED |
| MATERIAL MATT | OVERALL STEEL CORROSION RESISTING |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL ASSN STD SINGLE MATERIAL RESPONSE AST- A582, 300 SERIES OR ASSN STD SINGLE MATERIAL RESPONSE A-S 5640, 300 SERIES OR ASSN STD SINGLE MATERIAL RESPONSE A-S5641, 300 SERIES |
| MEDIA FOR WHICH DESIGNED MEDA | FIRST RESPONSE ETHYLENE GLYCOL |
| MEDIA FOR WHICH DESIGNED MEDA | SECOND RESPONSE WATER-OIL-GAS |
| SURFACE TREATMENT SFTT | LOCATION NOT OTHERWISE SPECIFIED PASSIVATE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | LOCATION NOT OTHERWISE SPECIFIED FED SPEC SINGLE TREATMENT RESPONSE QQ--35 QQ--35 |
| 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 |
|---|---|---|
| 11479375 | 18876 | US ARMY AVIATION AND MISSILE COMMAND |
| 11479375 | 3B150 | RAYTHEON COMPANY DBA RAYTHEON CO |
| 11479375 | 49956 | RAYTHEON COMPANY DIV CORP |
| 11479375 | 54X10 | RAYTHEON COMPANY |
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
—
Sep 22, 2026
Last purchased
1 · 1.0/yr
Purchase records
$103,062
Total demand
$103,062
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.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Sep 22, 2026 | SPE7MX21D0057/SPE7M126FA179 ↗ | RAYTHEON COMPANY | — | $103,062 |
Demand history
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
RAYTHEON COMPANY
last award Sep 2026
RAYTHEON COMPANY DBA RAYTHEON CO
no award yet
no awards on record
Listed source RAYTHEON COMPANY DIV CORP
no award yet
no awards on record
Listed source US ARMY AVIATION AND MISSILE COMMAND
no award yet
no awards on record
Listed source RAYTHEON COMPANY won the only award on record.
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: 2026-09-27.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-474-7838/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-474-7838/