The Piston,valve, cataloged under National Stock Number 4820-01-596-5430, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-596-5430 |
| Primary Part Number | 33A |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Griswold Industries Dba Cla-Val Co |
| Status | ACTIVE |
| Valve Size for Which Designed | 1.000 INCHES IN |
| Valve Model Number for Which Designed | 33A A |
| Material | STEEL CORROSION RESISTING |
| Valve Type for Which Designed | VALVE EQUALIZING |
| Outside Diameter | 6.250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 33A PRIMARY | Griswold Industries Dba Cla-Val Co (USA) |
NSN 4820-01-596-5430 is a Piston,valve, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-596-5430 has 1 cross-referenced part number: 33A (Griswold Industries Dba Cla-Val Co).
There are 6 known substitutes for 4820-01-596-5430: 5325-00-171-4357, 5120-00-187-7131, 3950-00-395-0181 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 33A: Part Name Assigned by Controlling Agency: AIR RELEASE AND VACUUM BREAKER VALVE; Overall Length: 9.100 INCHES NOMINAL IN; Valve Size for Which Designed: 1.000 INCHES IN; Valve Model Number for Which Designed: 33A A. 9 total characteristics are documented in the Federal Logistics Information System.