The Valve,check, cataloged under National Stock Number 4820-00-815-8913, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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 | 4820-00-815-8913 |
| Primary Part Number | 4570 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Material | COPPER ALLOY SEAT |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Material | COPPER ALLOY BODY |
| Maximum Operating Temp | 550.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Style Designator | STRAIGHT THRU |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY VALVE SIZE |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL |
| Thread Quantity Per Inch | 11-1/2 ALL ENDS |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Nominal Thread Size | 1.000 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-815-8913 is a Valve,check, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-815-8913 has 2 cross-referenced part numbers: 4570 (Ashcroft Inc Dba Heise), 4570 1IN (Ashcroft Inc Dba Heise).
There are 12 known substitutes for 4820-00-815-8913: 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: Material: COPPER ALLOY SEAT; Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Flow Control Device: DISK. 18 total characteristics are documented in the Federal Logistics Information System.