The Valve,check, cataloged under National Stock Number 4820-00-287-6002, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is American Valve Mfg Co. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-287-6002 |
| Primary Part Number | 35-2-1/2 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | American Valve Mfg Co |
| Status | CANCELLED |
| Renewable Seat Ring Type | THREADED |
| Disk Loading Method | SPRING |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Bolt Hole Quantity | 4 ALL ENDS |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Flange Face Design | PLAIN ALL ENDS |
| Face to Face Distance | 8.500 INCHES IN |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Nominal Thickness | 0.687 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Bolt Circle Nominal Diameter | 5.500 INCHES ALL ENDS IN |
| Nominal Outside Diameter | 7.000 INCHES ALL ENDS IN |
| Material | COPPER ALLOY SEAT |
| Material Document and Classification | ASTMFEB000 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material | IRON CAST BODY |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Connection Type | FLANGE ALL ENDS |
| Flow Control Device | DISK |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4820-00-287-6002 is a Valve,check, manufactured by American Valve Mfg Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-287-6002 has 2 cross-referenced part numbers: 35-2-1/2 (American Valve Mfg Co), 373 (Crane Co Div Valve Div).
There are 8 known substitutes for 4820-00-287-6002: 5950-00-556-1068, 2940-00-864-0717, 1620-01-061-5089 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 35-2-1/2: Renewable Seat Ring Type: THREADED; Disk Loading Method: SPRING; Valve Operation Method: AUTOMATIC; Mounting Position: HORIZONTAL OR VERTICAL. 23 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-287-6002 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.