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

About us

Welcome to STL Power & Process Controls Ltd

STL Power & Process Controls is a major supplier to many process industries including Power, Petrochemical, Waste to Energy, Food Production, Anaerobic Digestion, Oil & Gas, Brewing & Beer, Utilities, Water & Wastewater Treatment, Pharmaceutical, Marine, Heating & Ventilation, District Heating etc. We also supply into environmentally sustainable projects including energy efficient systems. We have direct access with the supplying factories, enabling us to use global supply chain for quick delivery.

Customer satisfaction is our priority here at STL Power & Process Controls with all customers, both large and small, being considered of equal importance. We offer in-house and on-site training to engineers and end-users.

STL Power and Process Controls Ltd was trading as RTK Controls Systems until 2020.

Our Story

We are the suppliers of process valves, controls, and insulation in UK & Europe for many brands including RTK, LESLIE, SCHROEDAHL, KF, SPENCE, SHANNON, SART VON ROHR and IGEMA. Our key strength is our Industry experience, designing and supplying Process Valves and Control Loops with a complete service solution. Ranging from one-off replacement valves to Pressurised Deaerators and Boiler Feed Tanks, Boiler Level Controls, Blowdown Systems or Actuated Pressure and Temperature Control Loops; we specify and supply cost effective solutions. STL Power & Process Controls get involved right at the beginning of the design stage of your projects, work integrally with you and your team, and project manage the contract right through to the equipment supply and commissioning phase. We also provide complete Turnkey Installations in conjunction with our approved M & E Contractors.

Established in 1998 by RTK GmbH

We are now a privately owned supplier of valves, instrumentation and flow control products. With our depth of experience we are able to assist in specifying the correct product for any given application and can also assist in designing systems for optimum efficiency. Our range of products and supply partners is comprehensive, meaning that we can deliver packaged solutions tailored to our customer’s needs.
STL Power & Process Controls has earned a reputation amongst our customers for quality, honesty, reliability and efficiency.  Our extensive range of control valves and energy saving products enables us to solve most control problems.  Positive attitude and enthusiasm of our team reflects our willingness to satisfy the many diverse enquiries that we receive.

We are interested in your problems and are proud of the service we provide to our customers.

Energy Under Control

This is our motto. After all, we are not just sellers of valves, we are control engineers with a passion for perfection. As our business activities extend far beyond control devices, our customers enjoy considerable added value. This means: our competence is not limited to valves alone – in fact we go much further… Indeed, we continuously look to develop and introduce new products for efficient use of energy.

What makes us so successful?

First and foremost, our staff are all good listeners, to understand your exact needs. Whether it’s Sales or Service – We employ specialists in all areas. We pride ourselves on supplying products that comply with high industrial standards and operate trouble-free for years. Most cases, our systems are plug-n-play, easy to install and commission.
– We have a wide support network across UK to carry out installation, commissioning and servicing of our products
– Factory trained qualified staff for quick resolutions of any problems
– High quality products and wide support network puts us on edge against competition
– All our products are fully tested at the factory for minimum intervention at site