The Valve,check, cataloged under National Stock Number 4820-00-842-2734, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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 | 4820-00-842-2734 |
| Primary Part Number | 4570 1-1/2IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Material | COPPER ALLOY OVERALL |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Style Designator | ANGLE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Operating Pressure | 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Flow Control Device | DISK |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Pipe Size Accommodated | 1.500 INCHES ALL ENDS IN |
| Maximum Operating Temp | 550.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Mounting Position | VERTICAL |
| Nominal Thread Size | 1.500 INCHES ALL ENDS IN |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Thread Series Designator | NPT ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 4570 1-1/2IN | Ashcroft Inc Dba Heise (USA) |
| 4570 | Ashcroft Inc Dba Heise (USA) |
| 215 | The Walworth Company (USA) |
NSN 4820-00-842-2734 is a Valve,check, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-842-2734 has 3 cross-referenced part numbers: 4570 1-1/2IN (Ashcroft Inc Dba Heise), 4570 (Ashcroft Inc Dba Heise), 215 (The Walworth Company).
There are 12 known substitutes for 4820-00-842-2734: 6240-00-132-5328, 5925-00-174-0387, 5935-00-205-9408 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4570 1-1/2IN: Material: COPPER ALLOY OVERALL; Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE; Style Designator: ANGLE; Media for Which Designed: STEAM FIRST RESPONSE. 17 total characteristics are documented in the Federal Logistics Information System.