The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-00-541-8839, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Watts Regulator Company. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-541-8839 |
| Primary Part Number | 40XL-3/4-75PSI |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Second End Thread Direction | RIGHT-HAND |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Flow Control Device | POPPET |
| Second End Connection Type | THREADED EXTERNAL PIPE |
| Bulb Length | 10.000 INCHES NOMINAL IN |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| Opening Pressure Setting | ERR-060 |
| Material | COPPER ALLOY BODY |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Temp Control Device Type | FUSIBLE |
| Second End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Material | COPPER ALLOY SEAT |
| Second End Style Designator | PLAIN |
| First End Connection Type | THREADED INTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Media for Which Designed | WATER, FRESH |
| First End Thread Direction | RIGHT-HAND |
| Material | STEEL CORROSION RESISTING STEM |
| Second End Relationship with First End | NOT IDENTICAL |
| Temp Adjustability | NOT ADJUSTABLE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 25-712REVFPC13 | Bauer, Inc. (USA) |
| 40XL3/4INCH | Bauer, Inc. (USA) |
| 40XL | Watts Regulator Company (USA) |
| 585-611-1716446REVCPC6 | Naval Ship Systems Command (USA) |
| 585WHCDREVCPC6 | Bauer, Inc. (USA) |
| 598-509-1894084REVAPC6 | Naval Ship Systems Command (USA) |
| H9046-75-212 | Mueller Co (USA) |
| 598WHCD2PC6 | Bauer, Inc. (USA) |
| 3802-3271620REVEPC13 | Naval Ship Systems Command (USA) |
| 40XL-3/4-75PSI PRIMARY | Watts Regulator Company (USA) |
| 40X3-4-100PSI | Bauer, Inc. (USA) |
| 3802-3271620REVFPC13 | Naval Ship Systems Command (USA) |
| 25-712REVEPC13 | Bauer, Inc. (USA) |
| 40XL-3/4-75PSI | Bauer, Inc. (USA) |
NSN 4820-00-541-8839 is a Valve,relief,pressure and Temper, manufactured by Watts Regulator Company, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-541-8839 has 14 cross-referenced part numbers: 25-712REVFPC13 (Bauer, Inc.), 40XL3/4INCH (Bauer, Inc.), 40XL (Watts Regulator Company), 585-611-1716446REVCPC6 (Naval Ship Systems Command), 585WHCDREVCPC6 (Bauer, Inc.) and 9 more.
There are 3 known substitutes for 4820-00-541-8839: 4820-00-849-9731, 4820-00-855-6169, 2590-01-394-9697. Verify interchangeability with system specifications before substitution.
Key specifications for 40XL-3/4-75PSI: Second End Thread Direction: RIGHT-HAND; Material: COPPER ALLOY FLOW CONTROL DEVICE; Flow Control Device: POPPET; Second End Connection Type: THREADED EXTERNAL PIPE. 21 total characteristics are documented in the Federal Logistics Information System.