Aquamatic V42J 3.00NPT Valve

AquaMatic V42J 3.00NPT Valve is a 3-inch, NPT-threaded diaphragm control valve from the AquaMatic V42 family, built for water service with a cast-iron body and a flexible diaphragm. The 3.00NPT designation refers to standard female-threaded 3-inch connections, enabling straightforward integration into common piping, and the V42J line is offered in multiple configurations, including normally open (NO) and normally closed (NC) variants; for example, the 3-inch NO float version uses Buna-N diaphragm material, while other NO/NC models appear in options such as V42J-3030-00000 (3" NC, flange) and spring-assisted NO variants. In catalog data, the V42J family lists a nominal flow coefficient (Cv1) of 134 for 3-inch models, with Kv around 116, indicating substantial flow capability at modest pressure drops. The V42 valves are designed for water applications and are described as cast-iron bodies with diaphragm actuation, suitable for use in water treatment skids, filtration circuits, and process piping where precise flow control is required. Depending on the exact configuration, these valves can feature float actuation, limit-stop or spring-assisted closures, and a range of end connections (NPT or flanged) to match installation needs.