Acquisition method (AMC)
1
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-328-5433 FSC 4820
NSN 4820-01-328-5433 (also written 4820013285433; NIIN 01-328-5433) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 6 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Nov 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
C
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, 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 |
|---|---|
| NOMINAL PIPE SIZE ACCOMMODATED AAAR | ALL ENDS INCHES 0.500 |
| FLOW CONTROL DEVICE ADQU | DISK |
| DISK LOADING METHOD ADSU | SPRING |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 425.0 |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| CONNECTION TYPE AWLS | ALL ENDS UNTHREADED INTERNAL PIPE |
| ADJUSTABLE PRESSURE RANGE CQCY | POUNDS PER SQUARE INCH 54.0 TO 66.0 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 400.0 |
| MATERIAL MATT | STEM STEEL CORROSION RESISTING |
| MATERIAL MATT | FLOW CONTROL DEVICE NICKEL ALLOY |
| MATERIAL MATT | SEAT NICKEL ALLOY |
| MATERIAL MATT | BODY COPPER ALLOY |
| 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 |
|---|---|---|
| BASAA05SCC | 5P967 | DANTE VALVE COMPANY |
| BASAA05SCC | 65079 | DANCO VALVE COMPANY |
| D48661 ITEM R10AD1D1AR-BM1 | 11859 | HUNT VALVE COMPANY, INC. |
| D48661 ITEM R10AD1D1AR-BM1 | 34889 | HUNT VALVE COMPANY INC DBA UNION FLONETICS |
| R10AD1D1AR-BM1 | 11859 | HUNT VALVE COMPANY, INC. |
| R10AD1D1AR-BM1 | 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
$9,924.70
Purchases
1
Total spend
$277,892
Nov 3, 2026
Last purchased
2 · 2.0/yr
Purchase records
$555,783
Total demand
$9,924.70
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Nov 3, 2026 | 28 | $9,924.70 | $277,892 | TRIMAN INDUSTRIES INC (0ZBE8) | Unknown | Source ↗ |
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 |
|---|---|---|---|---|
| Nov 3, 2026 | SPE7M227P0375 ↗ | TRIMAN INDUSTRIES INC | — | $277,892 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 3 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.
- Solicitation posted
- Award made
Dot size shows quantity. A faint bar joins a solicitation to the award made against it.
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
TRIMAN INDUSTRIES INC
last award Nov 2026
DANCO VALVE COMPANY
no award yet
no awards on record
Listed source DANTE VALVE COMPANY
no award yet
no awards on record
Listed source HUNT VALVE COMPANY INC DBA UNION FLONETICS
no award yet
no awards on record
Listed source HUNT VALVE COMPANY, INC.
no award yet
no awards on record
Listed source TRIMAN INDUSTRIES INC won the only award on record. TRIMAN INDUSTRIES INC won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-27-Q-0005 | Oct 19, 2026 | Oct 30, 2026 | 95 | Expired | View at DIBBS → |
| SPE7MC-27-T-0471 | Oct 13, 2026 | Oct 28, 2026 | 28 | Expired | View at DIBBS → |
| SPE7MC-26-T-189Z | Aug 12, 2026 | Aug 28, 2026 | 46 | 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: 2026-11-04.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-328-5433/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-328-5433/