Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-131-0229 FSC 4820
NSN 4820-01-131-0229 (also written 4820011310229; NIIN 01-131-0229) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 13 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.
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 | EXPOSED SPRING |
| BONNET ATTACHMENT METHOD ADST | BOLTED |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 150.0 |
| END ITEM IDENTIFICATION AGAV | NIMITZLASS CVN |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| FLANGE SHAPE ARKN | ALL ENDS ROUND |
| CONNECTION TYPE AWLS | ALL ENDS FLANGE |
| VALVE SIZE CCFG | INCHES 0.500 |
| ADJUSTABLE PRESSURE RANGE CQCY | POUNDS PER SQUARE INCH 15.0 TO 19.0 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 275.0 |
| NOMINAL OUTSIDE DIAMETER CWCD | ALL ENDS INCHES 3.500 |
| NOMINAL THICKNESS CWCK | ALL ENDS INCHES 0.376 |
| FIRST CONNECTION FACE TO CENTERLINE DISTANCE CWCL | INCHES 3.250 |
| SECOND CONNECTION FACE TO CENTERLINE DISTANCE CWCR | INCHES 3.250 |
| FLANGE FACE DESIGN CWDF | ALL ENDS RAISED STRAIGHT |
| RAISED FACE NOMINAL HEIGHT CWDH | ALL ENDS INCHES 0.062 |
| RAISED FACE NOMINAL DIAMETER CWDL | ALL ENDS INCHES 1.375 |
| MATERIAL MATT | STEM STEEL COMP 304 |
| MATERIAL MATT | FLOW CONTROL DEVICE STEEL COMP 304 |
| MATERIAL MATT | BODY STEEL |
| MATERIAL MATT | SEAT STEEL COMP 304 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | STEM ASSN STD SINGLE MATERIAL RESPONSE AST- A276,TYE 304 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | BODY ASSN STD SINGLE MATERIAL RESPONSE AST- A216,GRADE WCB |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | SEAT ASSN STD SINGLE MATERIAL RESPONSE AST- A276,TYE 304 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | FLOW CONTROL DEVICE ASSN STD SINGLE MATERIAL RESPONSE AST- A276,TYE 304 |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE STEAM |
| 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 |
|---|---|---|
| 20138 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 2013802S0015 | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| 20138C51 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20138C51SS | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20138C51SS CDS A15750 | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| 20183 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20183LM41M | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20183LM41M | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| 2038501E0015 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20385A01E0005 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20385A01E0005 | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| 20385A01E0015 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20385A01E0015 | 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
—
—
Last purchased
—
Purchase records
—
Total demand
—
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.
No related contract actions on record.
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.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M1-27-T-0036 | Oct 2, 2026 | Oct 13, 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.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-131-0229/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-131-0229/