The Valve,check, cataloged under National Stock Number 4820-00-529-1497, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Deltrol Corp Deltrol Fluid Products Div. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-529-1497 |
| Primary Part Number | C20S |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Deltrol Corp Deltrol Fluid Products Div |
| Status | CANCELLED |
| Valve Operation Method | AUTOMATIC |
| Thread Series Designator | NPT ALL ENDS |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Disk Loading Method | SPRING |
| Material | STEEL SEAT |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Flow Control Device | BALL |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material | STEEL BODY |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4820-00-529-1497 is a Valve,check, manufactured by Deltrol Corp Deltrol Fluid Products Div, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-529-1497 has 5 cross-referenced part numbers: C20S (Deltrol Corp), 102066 (Air Logistics Corporation Dba Air Logistics Corp), C20S (Deltrol Corp Deltrol Fluid Products Div), CV2000S (Deltrol Corp Deltrol Fluid Products Div), 3027 (Gilco Inc).
There are 12 known substitutes for 4820-00-529-1497: 3110-00-100-3095, 6740-00-126-6026, 5940-00-204-7911 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for C20S: Valve Operation Method: AUTOMATIC; Thread Series Designator: NPT ALL ENDS; Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE; Nominal Thread Size: 0.250 INCHES ALL ENDS IN. 13 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-529-1497 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.