Linear actuators
When combining an AVK knife gate valve with a linear electric actuator from LINAK you get easy installation, minimum maintenance and low energy consumption. The linear electrical actuator is robust and well proven and is already installed in several wastewater treatment plants and other industrial applications.
The linear actuators are energy efficient compared to actuators using compressed air, and AVK knife gate valves with linear actuators have proven an energy efficient choice for processes at wastewater treatment plants where butterfly valves traditionally have been used. Knife gate valves, especially when designed with a V-port, also provide a more precise regulation which is optimal for e.g. aeration tanks.
Our solution features very easy installation and adjustment that does not require assistance from an external technician:
Very compact, low weight and minimal space requirements
Self-locking with very precise positioning
Integrates with existing control, regulation and monitoring systems
In case of power failure, the valve can be opened and closed manually. A battery back-up is available as an optional extra.
AVK knife gate valves with linear actuators are available with the following control boxes and battery back-up:
WCU BASIC for analog control 4-20mA feed-back signals
WCU BUS for integrated BUS-communication module (PROFIBUS)
WCU UPS external battery back-up unit
Programming unit for programming and copying of parameter
The WCU BASIC or the WCU BUS are needed in order for the knife gate valve to work. The WCU UPS is optional and relevant if backup at power failures are crucial.
See Linak video about electric actuators in wastewater treatment applications - Anaerobic digester
See Linak video about electric actuators in wastewater treatment applications - Salsnes filters™
See Linak video about electric actuators in wastewater treatment applications - Phosphorous recovery