The Valve,check, cataloged under National Stock Number 4820-01-425-8216, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-425-8216 |
| Primary Part Number | 97550J |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Griswold Industries Dba Cla-Val Co |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Disk Loading Method | SPRING |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Material | COPPER ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Style Designator | STRAIGHT THRU |
| Supplementary Features | FLOW CONTROL DEVICE: DIAPHRAGM |
| Valve Operation Method | AUTOMATIC |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 42570 | Griswold Industries Dba Cla-Val Co (USA) |
| 81-01 SWS 3/8 | Griswold Industries Dba Cla-Val Co (USA) |
| 97550J PRIMARY | Griswold Industries Dba Cla-Val Co (USA) |
NSN 4820-01-425-8216 is a Valve,check, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-425-8216 has 3 cross-referenced part numbers: 42570 (Griswold Industries Dba Cla-Val Co), 81-01 SWS 3/8 (Griswold Industries Dba Cla-Val Co), 97550J (Griswold Industries Dba Cla-Val Co).
There are 5 known substitutes for 4820-01-425-8216: 4310-00-330-0185, 2920-00-394-5995, 5305-00-576-5417 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 97550J: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Disk Loading Method: SPRING; Thread Direction: RIGHT-HAND ALL ENDS; Material: COPPER ALLOY BODY. 15 total characteristics are documented in the Federal Logistics Information System.