Rotech specializes in limit switches, solenoid valves and automation components for industrial valves. As a valve manufacturer, we integrate these products into complete systems – including valves, actuators and I&C technology. Whether chemical, energy or mechanical engineering: we supply solutions that reliably control and monitor your processes.
For precise position feedback in automated valves.
For controlling pneumatic actuators and process automation.
Accessories for automation solutions, including position indicators.
Adaptation to existing systems, including ISO 5211 interfaces and complete assembly.
Hygienic automation solutions for CIP/SIP processes.
Automation of globe valves and ball valves for aggressive media.
Limit switches and solenoid valves for steam and condensate systems.
Housing free of condensation even under strong temperature fluctuations.
Integration in skid systems and MSR systems.
Up to 4 microswitches, 4 slot sensors or 2 proximity sensors in one box.
The internal NAMUR interface permits mounting without additional adapters.
100 % final inspection, functional and leak tests, material certificates. Additional tests for hazardous areas and hygienic applications.
The housing design prevents condensation even under extreme temperature fluctuations.
3/2-way and 5/2-way with NAMUR interface, 1.5 to 8 bar, IP65, 100 % duty cycle.
LEDs on the sensors show the switching position directly at the valve.
We trade in ROTECH components and supply from the manufacturer range. The series described below are the ones we supply most often – we can source the complete ROTECH range, including components not listed here.
The practical difference between limit switch boxes lies in how many and which signal transmitters can be accommodated. On the TCR/TPF series it is up to four microswitches, four slot sensors or two proximity sensors in one housing.
| Version | Application |
| Microswitch | compact, for many standard applications |
| Microswitch Ex d | flameproof enclosure for potentially explosive areas |
| Proximity sensor | contactless sensing, wear-free |
| Proximity sensor Ex ia | intrinsically safe version for Ex zones |
Two design features are decisive in operation: the internal NAMUR interface to VDI/VDE 3845 allows mounting without additional adapters, and the housing design prevents condensation even under extreme temperature fluctuations – the most common cause of failures outdoors. LEDs on the sensors make the switching state readable on site.
The EMV is a 3/2-way and 5/2-way solenoid valve with a NAMUR interface for direct mounting on pneumatic part-turn actuators. Control pressure 1.5 to 8 bar, protection class IP65, temperature range −20 °C to +50 °C, housing in anodised aluminium, designed for a 100 % duty cycle. The manual override has a detent, and a solenoid connector with LED and a silencer are included. Available for 230 V AC and 24 V DC.
The standard case is supply of the Rotech series version. Only on express request do we add to Rotech deliveries:
Yes – equipment, Ex version and mounting can be selected; integration into existing systems.
For position feedback on pneumatic and electric part-turn actuators.
Yes, we supply ready-to-install units including limit switches, solenoid valves, fittings and documentation.
We first review the operating data, materials and connection dimensions, then select the appropriate version from the Rotech range. On request we add accessories and documentation.
Because up to four signal transmitters fit into one TCR/TPF box – and because of our experience as an integration partner.
