The Valve,check, cataloged under National Stock Number 4820-00-900-1433, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lunkenheimer Co. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-900-1433 |
| Primary Part Number | 2145 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Lunkenheimer Co |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEAT |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Valve Operation Method | MANUAL |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Material | COPPER ALLOY 836 BODY |
| Style Designator | STRAIGHT THRU |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Style | SOCKET (TUBE) ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 2.000 INCHES ALL ENDS IN |
| Material Document and Classification | QQ-C-390,ALLOY B5/D FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2145 | Lunkenheimer Co (USA) |
NSN 4820-00-900-1433 is a Valve,check, manufactured by Lunkenheimer Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-900-1433 has 1 cross-referenced part number: 2145 (Lunkenheimer Co).
There are 12 known substitutes for 4820-00-900-1433: 5325-00-079-7237, 4820-00-087-8451, 9540-00-148-4299 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2145: Flow Control Device: DISK; Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS; Material: COPPER ALLOY FLOW CONTROL DEVICE; Material: COPPER ALLOY SEAT. 14 total characteristics are documented in the Federal Logistics Information System.