Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-00-478-5798 FSC 4820
NSN 4820-00-478-5798 (also written 4820004785798; NIIN 00-478-5798) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 6 manufacturer part numbers from 5 suppliers are 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)
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 |
|---|---|
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| FLOW CONTROL DEVICE ADQU | DISK |
| CONNECTION STYLE AHNC | — |
| ADJUSTABLE PRESSURE RANGE CQCY | POUNDS PER SQUARE INCH 30.0 TO 100.0 |
| THREAD DIRECTION AAJF | ALL ENDS RIGHT-HAND |
| MATERIAL MATT | OVERALL COPPER ALLOY |
| STYLE DESIGNATOR STYL | — |
| CONNECTION TYPE AWLS | ALL ENDS THREADED INTERNAL PIPE |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 30.0 |
| NOMINAL THREAD SIZE CQJX | ALL ENDS INCHES 1.000 |
| THREAD SERIES DESIGNATOR THSD | ALL ENDS NPT |
| DISK LOADING METHOD ADSU | SPRING |
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 |
|---|---|---|
| 12510617 | 50024 | COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE FM/ALCO |
| 2400341 | 50024 | COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE FM/ALCO |
| 2400341 | 7PZX0 | FAIRBANKS MORSE, LLC |
| 4C3-10 | 98437 | ELLIS & WATTS INTERNATIONAL, LLC |
| VB-5/SS/WS | 04962 | AIRLINE HYDRAULICS CORP DBA AIRLINE HYDRAULICS CORP |
| VB5WS | 23724 | RUTHMAN PUMP AND ENGINEERING INC DBA FULFLO SPECIALTIES CO DIV FULFLO SPECIALTIES 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
$1,381.32
Purchases
1
Total spend
$5,525
Sep 17, 2026
Last purchased
2 · 2.0/yr
Purchase records
$11,051
Total demand
$1,381.32
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Sep 17, 2026 | 4 | $1,381.32 | $5,525 | CHAND, L.L.C. (0D5X4) | Unknown | Source ↗ |
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 17, 2026 | SPE7L526P2908 ↗ | — | — | $5,525 |
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
CHAND, L.L.C.
last award Sep 2026
AIRLINE HYDRAULICS CORP DBA AIRLINE HYDRAULICS CORP
no award yet
no awards on record
Listed source COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE FM/ALCO
no award yet
no awards on record
Listed source ELLIS & WATTS INTERNATIONAL, LLC
no award yet
no awards on record
Listed source FAIRBANKS MORSE, LLC
no award yet
no awards on record
Listed source RUTHMAN PUMP AND ENGINEERING INC DBA FULFLO SPECIALTIES CO DIV FULFLO SPECIALTIES CO.
no award yet
no awards on record
Listed source CHAND, L.L.C. won the only award on record. CHAND, L.L.C. won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7L5-26-T-4648 | Jul 29, 2026 | Aug 13, 2026 | 4 | 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: 2026-10-05.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-00-478-5798/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-00-478-5798/