Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-00-813-0604 FSC 4820
NSN 4820-00-813-0604 (also written 4820008130604; NIIN 00-813-0604) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 5 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)
L
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC L: annual buy value is below the screening threshold. 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 |
|---|---|
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 450.0 |
| CONNECTION STYLE AHNC | — |
| CONNECTION TYPE AWLS | SECOND END THREADED EXTERNAL PIPE |
| THREAD SERIES DESIGNATOR THSD | FIRST END UNF |
| VALVE DISCHARGE FLOW RATE ADSY | CUBIC FEET PER MINUTE 25.4 |
| THREAD CLASS AAJD | 3A |
| FLOW CONTROL DEVICE ADQU | POPPET |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 300.0 |
| MATERIAL MATT | BODY COPPER ALLOY |
| CONNECTION TYPE AWLS | FIRST END THREADED EXTERNAL TUBE |
| THREAD DIRECTION AAJF | SECOND END RIGHT-HAND |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| SEAT ANGLE CQRB | FIRST END DEGREES 45.0 |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE AIR |
| DISK LOADING METHOD ADSU | SPRING |
| THREAD SERIES DESIGNATOR THSD | SECOND END NPT |
| NOMINAL THREAD SIZE CQJX | FIRST END INCHES 0.875 |
| THREAD DIRECTION AAJF | FIRST END RIGHT-HAND |
| NOMINAL THREAD SIZE CQJX | SECOND END INCHES 0.500 |
| MATERIAL MATT | SEAT RUBBER |
| MATERIAL MATT | FLOW CONTROL DEVICE COPPER ALLOY |
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 |
|---|---|---|
| 2077-71 | 10018 | AVAHO ACQUISITION CORP DBA IMPAC |
| 5432-200LB | 28193 | HENRY TECHNOLOGIES, INC. |
| 5454 1-2IN | 28193 | HENRY TECHNOLOGIES, INC. |
| 5454-200LB | 28193 | HENRY TECHNOLOGIES, INC. |
| A15504 | 41947 | MUELLER BRASS 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
—
Sep 24, 2026
Last purchased
1 · 1.0/yr
Purchase records
$2,016
Total demand
$2,016
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 24, 2026 | SPE7M026P4580 ↗ | AVIARMS SUPPORT CORP | — | $2,016 |
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
AVIARMS SUPPORT CORP
last award Sep 2026
AVAHO ACQUISITION CORP DBA IMPAC
no award yet
no awards on record
Listed source HENRY TECHNOLOGIES, INC.
no award yet
no awards on record
Listed source MUELLER BRASS CO.
no award yet
no awards on record
Listed source AVIARMS SUPPORT CORP won the only award on record. AVIARMS SUPPORT CORP won without being a listed source.
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/4820-00-813-0604/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-00-813-0604/