The Valve,gate, cataloged under National Stock Number 4820-00-288-7200, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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 | 4820-00-288-7200 |
| Primary Part Number | 1881 1-2IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Lunkenheimer Co |
| Status | CANCELLED |
| Inlet Relationship with Outlet | IDENTICAL |
| Maximum Operating Temp and Media for Which Designed | 550.0 FAHRENHEIT STEAM DEGF |
| Material Document and Classification | ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Pressure Class | ERR-060 |
| Nominal Thread Size | 0.500 INCHES IN |
| Operating Pressure and Type | 350.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 1000.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Stem Type | RISING |
| Thread Series Designator | NPT |
| Material | COPPER ALLOY 922 BODY |
| Connection Type | THREADED INTERNAL PIPE |
| Valve Size | 0.500 INCHES IN |
| Valve Operation Method | MANUAL |
| Bonnet Attachment Method | UNION |
| Features Provided | BONNET PACKING |
| Bonnet Type | INSIDE SCREW |
| Material | NICKEL ALLOY DISK |
| Material | COPPER ALLOY SEAT |
| Material Document and Classification | ASTM B584 (C87500) ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material | COPPER ALLOY STEM |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1881 1-2IN | Lunkenheimer Co (USA) |
| 32 1-2IN | The Walworth Company (USA) |
| 1237 1-2IN | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 1881 | Lunkenheimer Co (USA) |
| FIG 1962 1-2IN | Lunkenheimer Co (USA) |
NSN 4820-00-288-7200 is a Valve,gate, manufactured by Lunkenheimer Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-288-7200 has 5 cross-referenced part numbers: 1881 1-2IN (Lunkenheimer Co), 32 1-2IN (The Walworth Company), 1237 1-2IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 1881 (Lunkenheimer Co), FIG 1962 1-2IN (Lunkenheimer Co).
There are 12 known substitutes for 4820-00-288-7200: 5950-00-061-2034, 6515-00-117-9021, 4310-00-148-2007 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1881 1-2IN: Inlet Relationship with Outlet: IDENTICAL; Maximum Operating Temp and Media for Which Designed: 550.0 FAHRENHEIT STEAM DEGF; Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY; Pressure Class: ERR-060. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-288-7200 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.