We are the suppliers of process valves and controls in UK & Europe for RTK, LESLIE, KF, SPENCE, SHANNON and IGEMA. Our key strength is our Industry experience, designing and supplying Process Valves and Control Loops with a complete service solution.

Ranging from 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.

RTK Controls Systems get involved right at the beginning of the design stage of your projects, work integrally with you and your team, 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.
So, why not give RTK Control Systems the opportunity to look at a problem application that you may have today. We love challenges!

Our Story

Established in 1998, RTK Control Systems has earned a reputation amongst our customers for quality, friendly service and reliability. Our extensive range of control valves and energy saving products enables us to solve most control problems efficiently. Positive attitude and enthusiasm of our team reflects our willingness to satisfy the many diverse inquiries that we receive.

RTK Control Systems is a major supplier to many process industries including Power, Petrochemical, Food Production, Anaerobic Digestion, Oil & Gas, Brewing & Beer, Utilities, Sewage treatment, Pharmaceutical etc. We also supply into environmentally sustainable projects including energy efficient systems. We have direct access with the factory, enabling us to use global supply chain for quick delivery.

Customer satisfaction is our priority here at RTK Control Systems and all customers, both large and small, are considered of equal importance. We offer in-house and on-site training to engineers and end-users.

RTK Control Systems is a trading name of STL Power and Process Controls Ltd.

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 develop, produce and maintain actuators, sensors and control units for efficient use of energy. The extensive experience gained in this area is utilized in the training of staff and the development of new products.

Within a modern production environment we create products that outshine all others. We see ourselves as a highly motivated team, totally committed to its customers.

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.

General product reliability and prompt, efficient service when required.


Never had any reason to complain.


The response was very prompt and queries were answered quickly.


RTK offer technical backup for their products, and have a comprehensive range.


Contact us details

RTK Control Systems

Trading name of STL Power & Process Controls Ltd

Unit 25, Business Centre West Avenue One

Letchworth Garden City, Hertfordshire, SG6 2HB

Contact us details

Tel: +44 1462 480121

Fax: +44 1462 480195

Email: info@rtk.co.uk

Distributor of Circor products

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