Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-285-2833 FSC 4820
NSN 4820-01-285-2833 (also written 4820012852833; NIIN 01-285-2833) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 11 manufacturer part numbers from 3 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 to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
C
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, 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 |
|---|---|
| FLOW CONTROL DEVICE ADQU | DISK |
| BONNET TYPE ADSR | INSIDE SPRING |
| BONNET ATTACHMENT METHOD ADST | UNION |
| DISK LOADING METHOD ADSU | SPRING |
| BOLT HOLE QUANTITY AECS | 8 |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 750.0 |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| FLANGE SHAPE ARKN | ALL ENDS ROUND WITH HOLES |
| CONNECTION TYPE AWLS | ALL ENDS FLANGE |
| VALVE SIZE CCFG | INCHES 8.000 |
| ADJUSTABLE PRESSURE RANGE CQCY | POUNDS PER SQUARE INCH 183.0 TO 210.0 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 300.0 |
| NOMINAL OUTSIDE DIAMETER CWCD | SECOND END INCHES 11.000 |
| NOMINAL OUTSIDE DIAMETER CWCD | FIRST END INCHES 13.500 |
| NOMINAL THICKNESS CWCK | SECOND END INCHES 2.312 |
| NOMINAL THICKNESS CWCK | FIRST END INCHES 1.125 |
| FIRST CONNECTION FACE TO CENTERLINE DISTANCE CWCL | INCHES 9.500 |
| BOLT HOLE NOMINAL DIAMETER CWCQ | ALL ENDS INCHES 0.875 |
| SECOND CONNECTION FACE TO CENTERLINE DISTANCE CWCR | INCHES 9.438 |
| BOLT CIRCLE NOMINAL DIAMETER CWCT | SECOND END INCHES 9.500 |
| BOLT CIRCLE NOMINAL DIAMETER CWCT | FIRST END INCHES 11.750 |
| FLANGE FACE DESIGN CWDF | ALL ENDS RAISED STRAIGHT |
| RAISED FACE NOMINAL HEIGHT CWDH | FIRST END INCHES 0.062 |
| RAISED FACE NOMINAL HEIGHT CWDH | SECOND END INCHES 0.812 |
| RAISED FACE NOMINAL DIAMETER CWDL | SECOND END INCHES 8.500 |
| RAISED FACE NOMINAL DIAMETER CWDL | FIRST END INCHES 10.625 |
| MATERIAL MATT | STEM STEEL CORROSION RESISTING |
| MATERIAL MATT | BODY STEEL |
| MATERIAL MATT | FLOW CONTROL DEVICE STEEL CORROSION RESISTING |
| MATERIAL MATT | SEAT STEEL CORROSION RESISTING |
| 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 |
|---|---|---|
| DS-30Q 183T210PS | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| DS-30Q 183T210PSI | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| DS-30Q 183T210PSI | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
| DS-30Q 183T210PSI NMP-1552 | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| NMP-1552 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| NMP-1552 | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
| NMP-1552 OPT 2 183T210PSI | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| NMP-1552 OPT 2 183T210PSI | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| NMP-1552 OPT 2 183T210PSI | 75954 | KUNKLE INDUSTRIES INC LONERGAN VALVE DIV |
| NMP155201S0183 | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| NMP155202S0183 | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
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
—
Oct 15, 2026
Last purchased
1 · 1.0/yr
Purchase records
$943,051
Total demand
$943,051
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 |
|---|---|---|---|---|
| Oct 15, 2026 | SPE7MC27P0138 ↗ | ASRC FEDERAL FACILITIES LOGISTICS, LLC | — | $943,051 |
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
ASRC FEDERAL FACILITIES LOGISTICS, LLC
last award Oct 2026
ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
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 ASRC FEDERAL FACILITIES LOGISTICS, LLC won the only award on record. ASRC FEDERAL FACILITIES LOGISTICS, LLC 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 16, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-16.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-285-2833/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-285-2833/