Level Sensor & Modulating Ball Valve Maintain Desired Level in Day Tank (Image source: Plast-O-Matic Valves, Inc.)
A storage tank can be kept at a constant fill level using an actuated Plast-O-Matic ball valve. Placing the actuated valve downstream of the storage tank outlet allows for a controlled discharge. A level sensor is used to detect the height of the fluid in the storage tank. The level sensor communicates to a PID control module that interprets the level sensor information and communicates to the actuated ball valve and the supply pump to open and close at a rate that is proportional to the demand on the tank. It also turns the pump on/off and controls the pump speed based on the demand. Joucomatic Valve
The tank may have multiple taps to direct liquid where needed. Regardless of the demand on the tank, the control system will always keep the liquid level within the tank constant. Liquid exiting the actuated ball valve can be directed back to the primary source, or to some other area of need.
The valve used for the application is the CAFÉ NITRO actuated ball valve, which includes programmable OLED screen, complete menus, fully directional keypad, and onboard diagnostics. For this application, the 4-20 mA or 0-10 VDC electronic control option was specified.
The valve itself is equipped with a specially characterized ball that provides increasing flow at a linear rate -- versus a regular full port ball which is much harder to control.
Valmet will deliver a comprehensive package of critical valves and valve automation solutions to a lithium project run by Sibanye-Stillwater’s subsidiary Keliber Oy in Kokkola, Finland.
An Air Release Valve is open when the system is depressurized. At start up, the liquid process forces most of the air in the pipeline to high points, where the ARV allows it to escape. Once liquid rises, the valve closes and will not allow anything – gas or liquid – to pass in or out. It will not vent gas as it occurs during daily operations. It will reopen only when the system is depressurized and liquid level drops.
To fully understand the valve and the piping possibilities, the first step is to understand all of the capabilities of a 2-port valve.
ITT Inc.’s Engineered Valves announced the launch of the Cam-Tite Ball Valve GV Series, an innovative valve solution designed as a direct dimensional and upgraded replacement for severe service applications. The GV Series utilizes advanced sealing technology to isolate and contain highly hazardous liquids and gases to protect the safety of operators and prevent fugitive emissions.
In this chemical bulk handling application, a ball-type check valve was specified as a foot valve to provide continuous pump prime. The centrifugal pump will not self-prime, and if it runs dry will result in seal failure. Prolonged operation in a dry condition is likely to result in catastrophic failure.
Crop fertigation piping systems typically deliver precise batches of nutrients to crops through a supply line, and remove overflow via a drain/flush line. Although system parameters vary from site to site, a typical installation uses a mix of water and nutrients between 30-90º F.
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