This document describes the features and characteristics of the ACTIVALTM electric two-way valve with flange connection, model VY51X2J (JIS 20K-FCD450).
This manual describes the ACTIVAL VY51X2J electric two‑way valve with flange connection. It details the valve body and integrated actuator, the supported control signals, and the performance characteristics such as compact design, high differential pressure, large Cv values and low leakage.
The document includes safety precautions, mechanical dimensions, wiring diagrams, installation guidance, manual operation steps, and troubleshooting procedures to ensure reliable service in hot‑water, cold‑water and heating applications. This manual is written in Chinese.
| Valve pressure rating | JIS 20K (max 1.96 MPa) |
|---|---|
| Cv (DN15) | 1.0 |
| Cv (DN80) | 125 |
| Power supply | 24 V AC ±15 % 50/60 Hz |
| Valve body material | Ductile cast iron (JIS FCD450) |
| Allowed fluid temperature | 0 °C to 175 °C |