Change the manual valve to electric valve can be added electric actuator, it is best to find manufacturers to customize in order to choose. Motorized valve force distance, adjustable speed, simple structure and easy maintenance, can be used to control a variety of fluids, generally installed horizontally. Motorized valve consists of electric actuator and valve, divided into two types of angle stroke and straight stroke.

Blind plate type pressure test bench: Used for large valves. One flange is bolted under the bench, with pressure applied from the lower side to check upper-side sealing (or vice versa for strength). Valve ends bear direct compression, risking seal deformation, so compression force should be minimized while preventing leakage.
Turn-over test bench with hanging blind plate: Secures one valve flange via three hydraulic hook-shaped pressure plates, and the other flange is sealed by a lifting cylinder to tighten the blind plate for strength testing. Axial force is eliminated, ensuring no seal deformation and more accurate results.

Electric control valve power supply is divided into three-phase and single-phase, single-phase, for example, you need to connect two power lines and four weak control lines (input and output of each two), and according to the polarity of the access system control and feedback terminal.

The system utilizes the pressure difference between the top and bottom of the piston and the check valve to achieve pumping: when the piston rises, the valve opens, pumping the air underneath the pipe to the top of the chamber; when it falls, the valve closes and the air is discharged from the edge of the piston, forming a vacuum underneath the pipe through atmospheric pressure in order to pump water.

Common automatic valves cover pneumatic/electrical control valves, gate valves, globe valves, ball valves, butterfly valves, self-operated pressure-reducing valves, pneumatic tank bottom valves, and pneumatic angle-seat valves, etc., and each valve is subdivided according to structure. When installing, valves with flow direction requirements will be labeled with arrows, and reverse installation is generally not recommended.