The Valve,check, cataloged under National Stock Number 4820-01-283-3957, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ausco Inc. Government technical data includes 8 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-283-3957 |
| Primary Part Number | P430 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ausco Inc |
| Status | ACTIVE |
| Media for Which Designed | ACETYLENE FIRST RESPONSE |
| Face to Face Distance | 1.010 INCHES IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material Document and Classification | AMS 5643,17-4PH ASSN STD 1ST MATERIAL RESPONSE AND AMS 5678,17-7PH ASSN STD 2ND MATERIAL RESPONSE BODY |
| Supplementary Features | APPL TO ACFT,TYPE C-5B |
| Media for Which Designed | NITROGEN, GASEOUS SECOND RESPONSE |
| Material | STEEL CORROSION RESISTING BODY |
| Valve Size | 0.250 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-283-3957 is a Valve,check, manufactured by Ausco Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-283-3957 has 2 cross-referenced part numbers: 40003836 (Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County), P430 (Ausco Inc).
There are 7 known substitutes for 4820-01-283-3957: 4730-00-051-8748, 2940-00-096-9529, 6750-00-497-7141 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for P430: Media for Which Designed: ACETYLENE FIRST RESPONSE; Special Features: MATERIAL FOR SEALS: SILICONE RUBBER,AMS 3304; ENDS OF 2ND END CONNECTION ANGLED FOR SEAT; Face to Face Distance: 1.010 INCHES IN; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 9 total characteristics are documented in the Federal Logistics Information System.