Acquisition method (AMC)
1
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-440-7749 FSC 4820
NSN 4820-01-440-7749 (also written 4820014407749; NIIN 01-440-7749) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 5 manufacturer part numbers from 4 suppliers are on record. The government has 1 open solicitation for it.
Open for bid
1 open solicitation on record right now — quantity, close date, and where to submit.
| Solicitation | Qty | Status | |
|---|---|---|---|
| SPE7MC-27-T-0527 | 1 | Closes in 4d | Bid → |
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 |
|---|---|
| FLOW CONTROL DEVICE ADQU | DISK |
| DISK LOADING METHOD ADSU | SPRING |
| BOLT HOLE QUANTITY AECS | 4 |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 500.0 |
| END ITEM IDENTIFICATION AGAV | NIMITZ CLASS CVN |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| FLANGE SHAPE ARKN | ALL ENDS ROUND WITH HOLES |
| CONNECTION TYPE AWLS | ALL ENDS FLANGE |
| VALVE SIZE CCFG | INCHES 2.500 |
| ADJUSTABLE PRESSURE RANGE CQCY | POUNDS PER SQUARE INCH 15.0 TO 19.0 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 225.0 |
| NOMINAL OUTSIDE DIAMETER CWCD | ALL ENDS INCHES 7.000 |
| NOMINAL THICKNESS CWCK | ALL ENDS INCHES 0.875 |
| FIRST CONNECTION FACE TO CENTERLINE DISTANCE CWCL | INCHES 5.500 |
| BOLT HOLE NOMINAL DIAMETER CWCQ | ALL ENDS INCHES 0.750 |
| SECOND CONNECTION FACE TO CENTERLINE DISTANCE CWCR | INCHES 5.500 |
| BOLT CIRCLE NOMINAL DIAMETER CWCT | ALL ENDS INCHES 5.500 |
| 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 4.120 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | 2 1/2IN RELIEF VALVE, TYPE 2741-T |
| MATERIAL MATT | SEAT STEEL UNS J92600 |
| MATERIAL MATT | BODY STEEL UNS J03002 |
| MATERIAL MATT | FLOW CONTROL DEVICE STEEL COMP 303 |
| MATERIAL MATT | STEM STEEL COMP 303 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | STEM ASSN STD SINGLE MATERIAL RESPONSE AST- A582, CO- 303 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | FLOW CONTROL DEVICE ASSN STD SINGLE MATERIAL RESPONSE AST- A582, CO- 303 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | BODY ASSN STD SINGLE MATERIAL RESPONSE AST- A216, GR. WCB |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | SEAT ASSN STD SINGLE MATERIAL RESPONSE AST- A351, GR. CF8 |
| 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 |
|---|---|---|
| 20243 | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20243C41SS | 01343 | ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY |
| 20243C41SS | 15187 | EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM |
| CASNN03SJJ | 5P967 | DANTE VALVE COMPANY |
| CASNN03SJJ | 65079 | DANCO VALVE COMPANY |
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 | |
|---|---|---|---|---|---|
| SPE7MC-27-T-0527 | Oct 13, 2026 | Oct 23, 2026 | 1 | Open | 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 13, 2026.
- Contract action totals: USAspending, context only.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-440-7749/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-440-7749/