The Valve,check, cataloged under National Stock Number 4820-00-402-2435, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Imi Norgren Sales Ltd. Government technical data includes 9 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-402-2435 |
| Primary Part Number | C522 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Imi Norgren Sales Ltd |
| Status | ACTIVE |
| Thread Series Designator | NPT ALL ENDS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Supplementary Features | FLOW CONTROL DEVICE: PLUG |
| Style Designator | STRAIGHT THRU |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C522 PRIMARY | Imi Norgren Sales Ltd (GBR) |
| GA520-523,TYPE C.522 | Imi Norgren Sales Ltd (GBR) |
NSN 4820-00-402-2435 is a Valve,check, manufactured by Imi Norgren Sales Ltd, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-402-2435 has 2 cross-referenced part numbers: C522 (Imi Norgren Sales Ltd), GA520-523,TYPE C.522 (Imi Norgren Sales Ltd).
There are 2 known substitutes for 4820-00-402-2435: 4320-00-232-5428, 5315-00-425-6413. Verify interchangeability with system specifications before substitution.
Key specifications for C522: Thread Series Designator: NPT ALL ENDS; Nominal Thread Size: 0.500 INCHES ALL ENDS IN; Thread Direction: RIGHT-HAND ALL ENDS; Supplementary Features: FLOW CONTROL DEVICE: PLUG. 9 total characteristics are documented in the Federal Logistics Information System.