Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-494-9660 FSC 4820
NSN 4820-01-494-9660 (also written 4820014949660; NIIN 01-494-9660) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 2 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)
L
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC L: annual buy value is below the screening threshold. 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 |
|---|---|
| THREAD DIRECTION AAJF | ALL ENDS RIGHT-HAND |
| FLOW CONTROL DEVICE ADQU | DISK |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AIR |
| CONNECTION TYPE AWLS | FIRST END THREADED EXTERNAL PIPE |
| CONNECTION TYPE AWLS | SECOND END THREADED INTERNAL PIPE |
| NOMINAL THREAD SIZE CQJX | ALL ENDS INCHES 0.500 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 300.0 |
| SPECIAL FEATURES FEAT | RL4 SERIES HAS A MANUAL OVERRIDE HANDLE |
| MATERIAL MATT | BODY STEEL COMP 316 |
| MATERIAL MATT | STEM STEEL COMP 316 |
| MATERIAL MATT | FLOW CONTROL DEVICE STEEL COMP 316 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | FLOW CONTROL DEVICE ASSN STD SINGLE MATERIAL RESPONSE A479 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | BODY ASSN STD SINGLE MATERIAL RESPONSE A182 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | STEM ASSN STD SINGLE MATERIAL RESPONSE A479 |
| THREAD SERIES DESIGNATOR THSD | ALL ENDS 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 |
|---|---|---|
| 1000113244 | AG283 | NIDEC ASI SPA DBA ASI SPA DIV MGD MOTORS GENERATORS & DRIVES |
| SS-RL4M8F8 | 3T9T9 | SWAGELOK CO |
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-26-T-297H | Sep 25, 2026 | Oct 5, 2026 | 30 | 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/4820-01-494-9660/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-494-9660/