Common butterfly valve models Daquan Common butterfly valve models are as follows: hydraulic control slow closing check butterfly valve model: HD7X41X; Model of ventilation butterfly valve: D341H, D341W; Three eccentric wafer hard sealing butterfly valve Model: D73H, D373H, D673H, D973H

The range of the electromagnetic flowmeter is relatively large, usually no less than 20, and the instrument with automatic range switching function can exceed 50~100. The caliber of finalized products available in China ranges from 10mm to 3000mm. However, most of them are small and medium-sized in practical application. Compared with most other principle flow meters (such as volumetric, turbine, vortex street or Coriolis mass), large caliber meters account for a larger proportion.