Phone: +44 1462 480121
Address: Unit 25, Business Centre West,
Avenue One, Letchworth Garden City, Hertfordshire, SG6 2HB
United Kingdom

STL Power & Process Controls – Energy Under Control

Call Us: +44 1462 480121



STL are changing business address Due to continuous growth and success, we are moving to bigger premises on Monday 29th July 2024! Click HERE for the official announcement Email for more information

Welcome to SCHROEDAHL!

STL are now official SCHROEDAHL Channel Partners! READ MORE Email for more information

Welcome to SART von ROHR!

STL are the new UK SART von ROHR agents! READ MORE Email for more information

Insulation for Stock Valves

Effective 1st March 2023 as part of our Energy Consideration Strategy As of 1st March 2023, all of our stock RTK valves and globe valves will be automatically supplied with a bespoke Insulation Jacket The jacket should be put on […]

RTK Test Box (REact-TestOne)

A must have tool for service engineers – The RTK test box for REact30E, 60E, 100E Electric Actuators Use the REact-TestOne to test RTK Electric Actuators form the REact series (REact30E, 60E, 100E) Has a toggle switch which allows the […]


RTK has been approaved for UKCA Mark RTK products have been approved for the new UKCA marking (according to the Pressure and Safety Directive SI 2016 No.1105) The new UKCA marking will replace CE marking for all products intended to […]


Electric Actuators for adjusting butterfly valves, dampers, & gate valves 60° travel Self-locking 3-point step control (open-stop-close) Separate force and limit switches for both directions Valve position indicator Manual handwheel Read more


STL have become a 2nd generation family business! In April 2022, STL become a 2nd generation family business Managing Director – Emma Downs Sales Director – Rod Downs Click “Read more” for full announcement Read more


Circor have launched an app for RTK and Schroedahl products! Scan the QR codes on the RTK or Schroedahl valves or actuators to access essential and specific product data Keep track of products and their maintenance schedules Attach photos and […]

Safe Supplier Verified

We have achieved SafeSupplier accreditation! Gives peace of mind that we’re a safe company to use We’re committed to continuously improving health and safety standards We’re committed to sustainable and ethical practices We work compliantly in line with all current […]