SQL36E65 | Siemens Acvatix Electric Actuator for Butterfly Valves

Product Overview

The Siemens SQL36E65 is an electromotoric actuator from the Acvatix™ SQL36 series, developed for precise butterfly valve control.
It delivers reliable 90-degree rotary motion with high torque, supporting demanding HVAC and industrial flow control applications.

Moreover, this actuator combines robust mechanical design with practical auxiliary functions for modern building automation systems.
Therefore, it remains a trusted solution for valve automation projects, even though the model is discontinued by the manufacturer.

Technical Specifications

Model: SQL36E65
Manufacturer: Siemens
Product Family: Acvatix™ SQL36E

Actuator Type: Electromotoric butterfly valve actuator
Nominal Torque: 100 Nm
Nominal Rotation Angle: 90°

Supply Voltage: AC 230 V
Control Signal: 3-position (open / close / stop)
Motor Type: Reversible asynchronous motor

Positioning Time (90°): 25 seconds standard
Adjustable Runtime: 30–180 seconds with SEZ31.1 auxiliary module

Auxiliary Functions: Auxiliary switch, feedback potentiometer
Manual Operation: Integrated direct-acting manual control knob

Housing Material: Die-cast aluminum with protective cover
Protection Rating: IP54

Operating Temperature Range: −25 °C to +55 °C
Storage Temperature Range: −40 °C to +85 °C

Mounting Standard: EN ISO 5211 flange compatibility
Compatible Valves: Siemens VKF46 series butterfly valves

Weight: 6.5 kg (15.26 lbs)

FAQ

Q1: What is the main function of the Siemens SQL36E65 actuator?
It automates 90-degree butterfly valve movement for flow regulation and shut-off applications.

Q2: Which valves are compatible with this actuator?
It is designed for Siemens VKF46 series butterfly valves using EN ISO 5211 mounting.

Q3: Does the actuator support manual operation?
Yes, an integrated manual control knob allows valve positioning during power loss.

Q4: Is this actuator suitable for humid environments?
Yes, the internal heating element reduces condensation and improves reliability in humid conditions.

Q5: Is the SQL36E65 still supported by Siemens?
The model is discontinued, but spare units remain available through industrial parts distributors.