Acquisition method (AMC)
1
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-020-4709 FSC 4820
NSN 4820-01-020-4709 (also written 4820010204709; NIIN 01-020-4709) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 7 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 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 | SECOND END INCHES 0.750 |
| NOMINAL PIPE SIZE ACCOMMODATED AAAR | FIRST END INCHES 0.750 |
| THREAD DIRECTION AAJF | FIRST END RIGHT-HAND |
| THREAD DIRECTION AAJF | SECOND END RIGHT-HAND |
| FLOW CONTROL DEVICE ADQU | POPPET |
| BONNET TYPE ADSR | INSIDE SPRING |
| BONNET ATTACHMENT METHOD ADST | INTEGRAL |
| DISK LOADING METHOD ADSU | SPRING |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC OR MANUAL |
| CONNECTION TYPE AWLS | SECOND END THREADED EXTERNAL PIPE |
| CONNECTION TYPE AWLS | FIRST END THREADED INTERNAL PIPE |
| NOMINAL THREAD SIZE CQJX | FIRST END INCHES 0.750 |
| NOMINAL THREAD SIZE CQJX | SECOND END INCHES 0.750 |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 55.0 |
| MATERIAL MATT | FLOW CONTROL DEVICE COPPER ALLOY OR PLASTIC POLYTETRAFLUOROETHYLENE |
| MATERIAL MATT | SEAT COPPER ALLOY |
| MATERIAL MATT | BODY COPPER ALLOY |
| MATERIAL MATT | STEM COPPER ALLOY |
| SURFACE TREATMENT SFTT | LOCATION NOT OTHERWISE SPECIFIED CHROMIUM |
| STYLE DESIGNATOR STYL | — |
| THREAD SERIES DESIGNATOR THSD | SECOND END NPT |
| THREAD SERIES DESIGNATOR THSD | FIRST END NPT |
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 |
|---|---|---|
| 10-301-50 | 72219 | AALBERTS INTEGRATED PIPING SYSTEMS AMERICAS, INC. |
| 10-301CHROME55PSI | 72219 | AALBERTS INTEGRATED PIPING SYSTEMS AMERICAS, INC. |
| 10-322-P55 | 72219 | AALBERTS INTEGRATED PIPING SYSTEMS AMERICAS, INC. |
| 125-3/4-55-STEAM | 93641 | AQUATROL INC |
| 440173 | 35550 | GREENFIELD WORLD TRADE INC DIV GREENFIELD WORLD TRADE INC D/B/A LEGION INDUSTRIES |
| AQV125BA1MIL1 | 93641 | AQUATROL INC |
| SERIES125 | 93641 | AQUATROL 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
$78.20
Purchases
1
Total spend
$13,450
Sep 23, 2026
Last purchased
2 · 2.0/yr
Purchase records
$26,901
Total demand
$78.20
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Sep 23, 2026 | 172 | $78.20 | $13,450 | ECHELON SUPPLY AND SERVICE, INC. (61125) | 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 23, 2026 | SPE7MC26V4444 ↗ | ECHELON SUPPLY AND SERVICE, INC. | — | $13,450 |
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
ECHELON SUPPLY AND SERVICE, INC.
last award Sep 2026
AALBERTS INTEGRATED PIPING SYSTEMS AMERICAS, INC.
no award yet
no awards on record
Listed source AQUATROL INC
no award yet
no awards on record
Listed source GREENFIELD WORLD TRADE INC DIV GREENFIELD WORLD TRADE INC D/B/A LEGION INDUSTRIES
no award yet
no awards on record
Listed source ECHELON SUPPLY AND SERVICE, INC. won the only award on record. ECHELON SUPPLY AND SERVICE, INC. won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-26-T-260S | Sep 11, 2026 | Sep 21, 2026 | 172 | 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: 2026-10-05.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-020-4709/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-020-4709/