Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-527-4927 FSC 4820
NSN 4820-01-527-4927 (also written 4820015274927; NIIN 01-527-4927) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is 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 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 |
|---|---|
| THREAD CLASS AAJD | 2A |
| 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 | THREADED |
| DISK LOADING METHOD ADSU | SPRING |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 225.0 |
| MINIMUM OPERATING TEMP AEQJ | FAHRENHEIT -20.0 |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| CONNECTION TYPE AWLS | FIRST END THREADED EXTERNAL PIPE |
| CONNECTION TYPE AWLS | SECOND END THREADED EXTERNAL PIPE |
| THREAD QUANTITY PER INCH CMLP | 12 |
| NOMINAL THREAD SIZE CQJX | FIRST END INCHES 2.3125 |
| NOMINAL THREAD SIZE CQJX | SECOND END INCHES 1.750 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 6000.0 |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 3300.0 |
| SPECIAL FEATURES FEAT | ORIFICE SIZE 0.313 INCH |
| MATERIAL MATT | BODY BRONZE |
| MATERIAL MATT | FLOW CONTROL DEVICE STEEL CORROSION RESISTING |
| MATERIAL MATT | SEAT STEEL CORROSION RESISTING |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE AIR |
| STYLE DESIGNATOR STYL | — |
| THREAD SERIES DESIGNATOR THSD | FIRST END UN |
| THREAD SERIES DESIGNATOR THSD | SECOND END UN |
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 |
|---|---|---|
| 158 PL-5056/.313 3300PSI SET | 99565 | ADMIRAL VALVE LLC DBA CPV MANUFACTURING |
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
$2,216.67
Purchases
1
Total spend
$22,167
Sep 29, 2026
Last purchased
2 · 2.0/yr
Purchase records
$44,333
Total demand
$2,216.67
Latest unit price
Purchase history
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 29, 2026 | SPE7MC26V4642 ↗ | — | — | $22,167 |
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
CAGE 32DV7
last award Sep 2026
ADMIRAL VALVE LLC DBA CPV MANUFACTURING
no award yet
no awards on record
Listed source CAGE 32DV7 won the only award on record. CAGE 32DV7 won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-26-T-280B | Sep 17, 2026 | Sep 28, 2026 | 10 | 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: 2026-10-04.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-527-4927/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-527-4927/