The Valve,check, cataloged under National Stock Number 4820-01-433-2665, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-433-2665 |
| Primary Part Number | 1291N-300 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | CANCELLED |
| Disk Loading Method | WEIGHT |
| Mounting Position | HORIZONTAL |
| Valve Operation Method | AUTOMATIC |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Face to Face Distance | 10.000 INCHES IN |
| Material | COPPER ALLOY BODY |
| Flange Face Design | PLAIN ALL ENDS |
| Nominal Thickness | 0.750 INCHES ALL ENDS IN |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Bolt Circle Nominal Diameter | 6.000 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Nominal Outside Diameter | 7.500 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Operating Pressure | 225.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Valve Size | 3.000 INCHES IN |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Bolt Hole Quantity | 4 ALL ENDS |
| Flow Control Device | DISK |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1291N-300 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 1291 3.00IN | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 763A | Jenkins Bros (USA) |
| 1291-3 | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 1291-N-3IN | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
NSN 4820-01-433-2665 is a Valve,check, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-01-433-2665 has 5 cross-referenced part numbers: 1291N-300 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1291 3.00IN (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 763A (Jenkins Bros), 1291-3 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1291-N-3IN (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
There are 10 known substitutes for 4820-01-433-2665: 2915-00-037-7785, 5360-00-358-4140, 7320-00-389-5076 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1291N-300: Disk Loading Method: WEIGHT; Mounting Position: HORIZONTAL; Valve Operation Method: AUTOMATIC; Material: NICKEL ALLOY FLOW CONTROL DEVICE. 23 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-01-433-2665 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.