Heason linear actuator used in novel valve design

A standard IP65 linear actuator fulfils marine environment specification for valve positioning.

The Special Products Division of E.P Barrus Ltd, design and build customised marine engines for the RNLI, UK MoD and many global search and rescue organisations. Since the 1970s, Barrus has led the field in Post Immersion Restart System (PIRS) 2-stroke engines which have the ability to restart after complete submersion by rapidly evacuating water from the cylinder head, transfer ports and the fuel system. Following continuous product development in this demanding application area the Bicester-based manufacturer has now introduced a new generation of environmentally friendly 4-stroke engines which actually prevent water entering through the inlet, vents and exhaust system using a patented valve arrangement which is actuated immediately a sensor network detects that immersion has taken place. This new "˜Inversion Protected' technology not only cuts down restart time from typically 40 seconds to just 10 seconds - a major factor in a search and rescue situation - but also reduces internal engine damage or deterioration due to water ingress for much improved reliability and extended engine life.

As part of the specialised engine design, Barrus have selected Thomson Electrak 1 series linear actuators to drive the inversion protection valve following application support from motion control specialist Heason Technology. These IP65-rated linear actuators are mounted on the exposed engine, completely fulfilling the Barrus specification, but nonetheless are supplied as a low-cost off-the-shelf standard product. The Electrak1 features a simple 2-wire DC motor which is switched to actuate the valve following boat roll-over whilst a manual input is used to reset the system. The robust and durable sealed design includes an aluminium/zinc corrosion-resistant housing and stainless steel actuating rod.

Electrak 1 actuators are widely used and well proven across demanding applications in rigorous operating conditions and provide consistent, repeatable performance in extreme temperature and humidity conditions. The Electrak actuator was also chosen for its self-locking acme screw drive that will not allow the valve to back drive, and with the added benefit of a small and compact dimensions for convenient mounting within the space restricted marine engine. The clevis mount design makes installation and removal straightforward whilst the auto reset thermal switch motor protection and integral end-of-stroke limit switches ensure safe operation.

To learn more about Thomson Electrak 1 series linear actuators and other products, please visit www.heason.com.

Heason Technology Ltd

Motion Solutions Centre
Spring Copse Business Park
RH13 0SZ

+44 (0)1403 792300



More applications
6 hours ago
What changes does the new machinery regulation bring?
As the machinery regulation replaces machinery directive 2006/42/EC, Dirk Meyer, specialist engineer solution architect at Eaton, looks at what is changing.
10 hours ago
Klüber Lubrication receives Schaeffler Supplier Award 2022
Schaeffler has awarded Klüber Lubrication with the Supplier Award 2022 in the field of quality. The jury emphasised in particular the global supplier's strong commitment to the compliance with quality standards.
13 hours ago
Essentra Components cuts energy usage by 15% globally
An innovative energy reduction initiative based on the concept of insulated jackets is helping industrial components manufacturer Essentra Components cut its energy usage when heating machine barrels by 15% and save CO2 emissions in the process.
1 day ago
Fluke addresses requirements to improve operational efficiencies
Rising energy costs and more stringent legislation guiding sustainable practices is spurring companies to re-evaluate processes and seek new tools and technologies to reduce waste and overcome challenges in today’s industrial environments.
4 days ago
7th axis robot in a welding application
An Igus 7th axis on a collaborative robot working alongside staff at German screening machine manufacturer Rhewum is helping to increase the workspace from 1300 to 5500mm.
4 days ago
Robust inductives position automotive workplace carriers on conveyor
An automotive manufacturer is relying extensively on the reliability of Contrinex’s robust and high-performance inductive sensors in the automated assembly of engines, where cylinder heads are transferred for mounting on the engine.
4 days ago
New Leuze plant in Malaysia begins operation
After a construction time of just 16 months, Leuze has opened its new production site in Malaysia. With immediate effect, Leuze sensors will be produced there for the international market.
4 days ago
Nord brings industry solutions to Drinktec trade fair
From 12 to 16 September 2022, the beverage and liquid food industry meets at the world leading drinktec trade fair in Munich. Nord Drivesystems will be presenting its solutions for the industry, which focus on energy efficiency and hygiene.
5 days ago
Stephenson Gobin celebrates 50 years
UK manufacturer Stephenson Gobin is celebrating 50 years in business, a milestone that shows its commitment to innovation in the motion control industry.
6 days ago
Join a free webinar on the smart factory journey
Ripley Solutions invites you to attend a free webinar, where solutions architect Paul Holding will talk you through the smart factory journey, a roadmap to connected manufacturing.

Login / Sign up