Acquisition method (AMC)
1
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-00-549-4733 FSC 4820
NSN 4820-00-549-4733 (also written 4820005494733; NIIN 00-549-4733) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 9 manufacturer part numbers from 8 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-1633 | 135 | Closes in 9d | 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 |
|---|---|
| FEATURES PROVIDED CBBL | PRESSURE TIGHT OUTLET SIDE |
| NOMINAL THREAD SIZE CQJX | FIRST END INCHES 0.250 |
| MAXIMUM OPERATING TEMP AEHZ | SECOND RESPONSE FAHRENHEIT 250.0 |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| MATERIAL MATT | OVERALL COPPER ALLOY |
| MEDIA FOR WHICH DESIGNED MEDA | FIFTH RESPONSE HYDROGEN |
| MEDIA FOR WHICH DESIGNED MEDA | FIRST RESPONSE AIR |
| MAXIMUM OPERATING TEMP AEHZ | FIRST RESPONSE FAHRENHEIT -40.0 |
| MEDIA FOR WHICH DESIGNED MEDA | SECOND RESPONSE ACETYLENE |
| MEDIA FOR WHICH DESIGNED MEDA | THIRD RESPONSE AMMONIA, GASEOUS |
| STYLE DESIGNATOR STYL | — |
| CONNECTION TYPE AWLS | FIRST END THREADED EXTERNAL PIPE |
| THREAD SERIES DESIGNATOR THSD | FIRST END NPT |
| MEDIA FOR WHICH DESIGNED MEDA | FOURTH RESPONSE REFRIGERANT 12 |
| CONNECTION STYLE AHNC | — |
| THREAD DIRECTION AAJF | FIRST END RIGHT-HAND |
| FLOW CONTROL DEVICE ADQU | POPPET |
| DISK LOADING METHOD ADSU | SPRING |
| NOMINAL PIPE SIZE ACCOMMODATED AAAR | FIRST END INCHES 0.250 |
| OPERATING PRESSURE CQQF | FIRST RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 200.0 |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 10.0 |
| SPECIAL FEATURES FEAT | POP-OFF TYPE |
| THREAD QUANTITY PER INCH CMLP | 18 |
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 |
|---|---|---|
| 559B-2M-10 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC |
| 559B2M | 12566 | WOMACK MACHINE SUPPLY COMPANY OF OKLAHOMA, INC. |
| 559B2M10PSI | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC |
| 672238 | 1PQF4 | CAE USA INC. |
| 672238 | 36378 | RAYTHEON TECHNICAL SERVICES COMPANY |
| 6900-0014-001 | 06032 | ANTENNA PRODUCTS CORPORATION DBA ANTENNA PRODUCTS CORP |
| 7748765 | 19204 | ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC |
| 7748765 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
| SCD10302-2 | 04984 | CELTECH CORPORATION DIV USE CAGE 65552 FOR ALL ORDERS |
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
—
Aug 12, 2026
Last purchased
1 · 1.0/yr
Purchase records
$12,240
Total demand
$12,240
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 |
|---|---|---|---|---|
| Aug 12, 2026 | SPE7M226V4766 ↗ | JGILS, LLC DBA JGILS LLC | — | $12,240 |
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
JGILS, LLC DBA JGILS LLC
last award Aug 2026
ANTENNA PRODUCTS CORPORATION DBA ANTENNA PRODUCTS CORP
no award yet
no awards on record
Listed source ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC
no award yet
no awards on record
Listed source CAE USA INC.
no award yet
no awards on record
Listed source CELTECH CORPORATION DIV USE CAGE 65552 FOR ALL ORDERS
no award yet
no awards on record
Listed source CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC
no award yet
no awards on record
Listed source RAYTHEON TECHNICAL SERVICES COMPANY
no award yet
no awards on record
Listed source U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
no award yet
no awards on record
Listed source JGILS, LLC DBA JGILS LLC won the only award on record. JGILS, LLC DBA JGILS LLC won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-27-T-1633 | Nov 6, 2026 | Nov 16, 2026 | 135 | 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 Nov 4, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-11-04.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-00-549-4733/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-00-549-4733/