Acquisition method (AMC)
1
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-181-3547 FSC 4820
NSN 4820-01-181-3547 (also written 4820011813547; NIIN 01-181-3547) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 14 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Oct 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)
R
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. 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 |
| BONNET TYPE ADSR | INSIDE SPRING |
| BONNET ATTACHMENT METHOD ADST | UNION |
| DISK LOADING METHOD ADSU | SPRING |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| CONNECTION TYPE AWLS | ALL ENDS UNTHREADED INTERNAL PIPE |
| ADJUSTABLE PRESSURE RANGE CQCY | POUNDS PER SQUARE INCH 110.0 TO 140.0 |
| OPERATING PRESSURE CQQF | FIRST RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 350.0 |
| OPERATING PRESSURE CQQF | SECOND RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 352.0 |
| MATERIAL MATT | BODY COPPER ALLOY |
| MATERIAL MATT | STEM STEEL COMP 316 |
| STYLE DESIGNATOR STYL | — |
| FURNISHED ITEMS AND QUANTITY TMQY | TAILPIECE 2 AND NUT 2 |
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 |
|---|---|---|
| BAMAA07SCC | 5P967 | DANTE VALVE COMPANY |
| BAMAA07SCC | 65079 | DANCO VALVE COMPANY |
| D50UU-101T140-1/2INCH | 65079 | DANCO VALVE COMPANY |
| L-2120-C 1/2 INCH | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| L-2120-C 1/2 INCH | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| L-2120-C 1/2 INCH | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
| L2120 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| L2120 | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| L2120 | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
| NMP-110 1/2IN 101 TO 140 PSI | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| NMP-110 1/2IN 101 TO 140 PSI | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| NMP-110 1/2IN 101 TO 140 PSI | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
| NMP-110 101 T0 | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
| NMP-110 101 TO 140PSI | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
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
$10,217.16
Purchases
1
Total spend
$30,651
Oct 6, 2026
Last purchased
3 · 3.0/yr
Purchase records
$102,160
Total demand
$10,217.16
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | 3 | $10,217.16 | $30,651 | 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 |
|---|---|---|---|---|
| Sep 8, 2026 | SPE7M126V123H ↗ | TRIMAN INDUSTRIES INC | — | $40,857 |
| Oct 6, 2026 | SPE7M227V0064 ↗ | TRIMAN INDUSTRIES INC | — | $30,651 |
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
TRIMAN INDUSTRIES INC
last award Oct 2026
ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
no award yet
no awards on record
Listed source DANCO VALVE COMPANY
no award yet
no awards on record
Listed source DANTE VALVE COMPANY
no award yet
no awards on record
Listed source EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM
no award yet
no awards on record
Listed source KUNKLE INDUSTRIES INC LONERGAN VALVE DIV
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-26-T-202R | Aug 20, 2026 | Sep 3, 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: 2026-10-24.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-181-3547/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-181-3547/