The Valve,check, cataloged under National Stock Number 4820-00-422-9494, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-422-9494 |
| Primary Part Number | 9D 1-2IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Operating Pressure | 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Flow Control Device | DISK |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Valve Operation Method | AUTOMATIC |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Material | COPPER ALLOY BODY |
| Material | RUBBER FLOW CONTROL DEVICE |
| Mounting Position | HORIZONTAL |
| Thread Series Designator | NPT ALL ENDS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 9D | Lewis Corp (USA) |
| 6091308-2 | Lockheed Martin Corporation Div Rms - Manassas (USA) |
| 9D | Teledyne Western Wire and Cable Teledyne Industries Inc (USA) |
| W-9D 1/2 | Watts Regulator Company (USA) |
| 9D | Watts Regulator Company (USA) |
| 9D 1-2IN PRIMARY | Watts Regulator Company (USA) |
| 9 | Watts Regulator Company (USA) |
NSN 4820-00-422-9494 is a Valve,check, manufactured by Watts Regulator Company, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-422-9494 has 7 cross-referenced part numbers: 9D (Lewis Corp), 6091308-2 (Lockheed Martin Corporation Div Rms - Manassas), 9D (Teledyne Western Wire and Cable Teledyne Industries Inc), W-9D 1/2 (Watts Regulator Company), 9D (Watts Regulator Company) and 2 more.
There are 4 known substitutes for 4820-00-422-9494: 5965-00-170-5235, 5961-00-520-8434, 5935-01-271-1759 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 9D 1-2IN: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Operating Pressure: 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Flow Control Device: DISK; Media for Which Designed: WATER, FRESH SINGLE RESPONSE. 15 total characteristics are documented in the Federal Logistics Information System.