Two new types of electromotive process valves have joined Bürkert’s range of actuator components.
After introducing the Type 3360 and 3361 control valves, the Ingelfingen-based fluidics experts now present the Type 3320 (angle seat valve) and Type 3321 (globe valve) electromotive on/off valves.
These shut-off valves set new standards with respect to performance, reliability and cost effectiveness and the company claims they are ideal for applications without compressed air supply.
The addition of the new Type 3320 / 3321 shut-off valves to Bürkert’s process valve product range now makes it possible to switch systems entirely to electromotive actuators.
The two on/off valve types feature convincing efficiency that is equal to that of pneumatic actuators. The electric actuator uses the same valves of the Bürkert ELEMENT product family, meaning that the actuators are interchangeable.
Electromotive valves are cost-effective, due to their low energy costs and savings throughout the entire system.
The Bürkert solution has a cogging torque brake, which fixes the position of the valve without additional energy consumption. If there is a power outage the safety position can be approached via the optional SAFEPOS energy storage pack.
A mechanical position indicator with a 360° LED clearly indicates the position and status of the valve at all times. There is also a manual override.
The closing speed is adjustable to protect field devices and pipes against pressure shocks. The electromotive on/off valves respond instantaneously to process signals, guaranteeing fast shut-off of the flow within 3-4 seconds, if necessary.
Type 3320 / 3321 shut-off valves are FDA compliant and have a linear motion executed by a brushless DC motor with a planetary gear via a low-friction, permanently lubricated ball screw.
The powder-coated aluminium body with protection class IP65/IP67 has a close design, intended to be easy to clean. This means it can be used in food applications.
Other uses include heating and cooling circuits for heat exchangers, mobile or decentralised drinking water treatment systems or large-scale systems in which the supply of compressed air is impractical due to the long distances.
Electromotive valves are especially suitable for processes where compressed air is not desired, such as in painting systems. The valves are insensitive to weather conditions, impacts and vibrations.
They are offered as an angle seat valve (Type 3320) and as a globe valve (Type 3321), initially in diameters from DN15 to DN50. Larger and smaller sizes will be added to the series later.
The valves can be used for gases and water, alcohols, oils and alkaline solutions, saline solutions and steam – with temperatures from -10 to 185 °C, at ambient temperatures up to 65 °C.
Depending on the nominal size, operating pressures can reach up to 16 bar. Connection options include flange, thread, weld-end and clamp. A voltage of 24 V DC is needed for the electric power supply.
To facilitate commissioning, operation and maintenance, the electromotive shut-off valves are designed in conformity with the Bürkert Efficient Device Integration Platform (EDIP).
This device platform combines functions, compatible HMI devices and other services to facilitate the system integration of all new devices.
The Bürkert Communicator (free) features diagnostic functions for convenient monitoring of operating data as well as alarm messages for customised parameters.
Capacitive buttons and DIP switches on the shut-off valve allow configuration of all important basic functions.