The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-00-855-6169, 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 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-855-6169 |
| Primary Part Number | 40XL-8 PSI |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Watts Regulator Company |
| Status | CANCELLED |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| First End Thread Direction | RIGHT-HAND |
| Material Document and Classification | ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM B62 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Second End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Media for Which Designed | WATER, FRESH |
| Second End Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 1 TYPE AND 1 CLASS AND 130 SIZE |
| End Connection Quantity | 2 |
| Temp Rating | 210.0 FAHRENHEIT DEGF |
| Opening Pressure Setting | ERR-060 |
| Furnished Items | EMERGENCY OPENING DEVICE |
| Temp Adjustability | NOT ADJUSTABLE |
| Temp Control Device Type | THERMOSTATIC |
| Material | COPPER ALLOY 922 AND COPPER ALLOY 836 BODY |
| Material Document and Classification | ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM B62 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material | PLASTIC SILICONE FLOW CONTROL DEVICE |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| Bulb Length | 8.000 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| Bulb Diameter | 0.250 INCHES NOMINAL IN |
| Second End Style Designator | PLAIN |
| Material | COPPER ALLOY 922 AND COPPER ALLOY 836 SEAT |
| Flow Control Device | POPPET |
| Second End Connection Type | THREADED EXTERNAL PIPE |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | STEEL CORROSION RESISTING STEM |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 40XL-8 PSI | Watts Regulator Company (USA) |
| M8 | Watts Regulator Company (USA) |
| 40XL5M8 3-4-125 | Watts Regulator Company (USA) |
| MILV13612 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| ANSI Z21.22 | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| MIL-V-13612E | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M12 | Watts Regulator Company (USA) |
| 40XL | Watts Regulator Company (USA) |
NSN 4820-00-855-6169 is a Valve,relief,pressure and Temper, manufactured by Watts Regulator Company, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-855-6169 has 8 cross-referenced part numbers: 40XL-8 PSI (Watts Regulator Company), M8 (Watts Regulator Company), 40XL5M8 3-4-125 (Watts Regulator Company), MILV13612 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), ANSI Z21.22 (American National Standards Institute Incorporated Dba American National Standards Institute) and 3 more.
There are 12 known substitutes for 4820-00-855-6169: 6635-00-047-8503, 4820-00-142-3190, 3110-00-144-8482 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 40XL-8 PSI: First End Nominal Pipe Size Accommodated: 0.750 INCHES IN; First End Thread Direction: RIGHT-HAND; Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM B62 ASSN STD SINGLE MATERIAL RESPONSE BODY; Second End Nominal Pipe Size Accommodated: 0.750 INCHES IN. 27 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-855-6169 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.