The Valve,check, cataloged under National Stock Number 4820-01-245-3631, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tyco Fire Products Lp. Government technical data includes 6 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-245-3631 |
| Primary Part Number | 57921 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Valve Size | 2.000 INCHES IN |
| Connection Type | FLANGE ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material | STEEL CORROSION RESISTING BODY |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-245-3631 is a Valve,check, manufactured by Tyco Fire Products Lp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-245-3631 has 3 cross-referenced part numbers: AGF0263 (Tyco Fire Products Lp), 57921 (Tyco Fire Products Lp), AGF0263 (Wormald Technology).
There are 2 known substitutes for 4820-01-245-3631: 6685-00-468-6867, 5331-00-594-5417. Verify interchangeability with system specifications before substitution.
Key specifications for 57921: Valve Size: 2.000 INCHES IN; Connection Type: FLANGE ALL ENDS; Valve Operation Method: AUTOMATIC; Style Designator: STRAIGHT THRU FLANGED ENDS. 6 total characteristics are documented in the Federal Logistics Information System.