Proportional Flow Divider – Information & Advantages

Flow dividers – are devices which split the flow from a pump into two streams for independently operating two branch circuits. Advantages of flow divider operation are: 

  1. Only one pump is required. This is a particular advantage in the saving of space, and reducing cost. 
  1. Each branch circuit is isolated from the other: changing loads on one branch will not affect the pressure or flow in the other branch. Flow dividers are only for hydraulic systems; they are not applicable to most industrial air systems. 

Spool-type dividers can be built to deliver proportional flows from two outlets, or to deliver a priority flow from one outlet with excess flow coming out the other outlet. Only the spool-type is manufactured by Hydraulic Projects. 

When Are They Used?

Two general methods are used for dividing a flow of oil. One method uses a sliding spool; the other method uses rotary construction, and operates similarly to two gear-type pumps with shafts coupled together. The two gear sections meter proportional amounts of oil to each outlet. 

They are used on agricultural and industrial machinery to control the speed of the bed chains or drums, and also in tracked vehicles to control the speed and direction of travel. 

How Are They Made?

The body is aluminium, and the rest of the components are either hardened or nitro-carburised steel. 

The action of spool-type and rotary-type dividers is quite different, and each requires a degree of technical knowledge to apply them properly and on suitable applications. 


The product is manufactured in the UK, for excellent service and support. When combined with our solenoid controlled directional valves, they provide an economical alternative to full proportional control. 

Are you looking for more information on how our proportional flow divider could benefit your machinery? Contact our team of experts, here at Hy-Pro on 01626 863634. 


HY-PRO – Covid-19 Update

Dear Supplier

We are just writing to let you know that, while it’s business as usual at the moment, we are taking precautions to protect our staff and our future.

In particular:

  • Only essential and pre-arranged visitors will be allowed on site.
  • Delivery drivers will not be allowed inside and proofs of delivery/collection will be ‘name only’ – ie not signed. This is to prevent personal contact.
  • Key workers who are able to work from home now have the facility to do so.
  • Government guidelines for isolation have been re-enforced for all our staff and we have announced emergency sick-pay policies to ensure everyone complies.
  • Hygiene policies have been put into place.

We are still in full production and, for the most part, we are not currently having problems with raw materials and supplies.  We would ask our suppliers to inform us immediately if they know of any expected problems with their own supply chains.  In particular, we urgently need to know if any existing purchase order will be delayed.  Communication and cooperation will be vital in this emergency.

I would like to wish all of our suppliers the very best in these worrying and uncertain times.


Kind Regards


Managing Director

Solenoid Diverter Valves

In order to control your hydraulic system to the level that is most efficient, you cannot afford to ignore the advantages offered by hydraulic diverter valves. This central point in a hydraulic system will drastically decrease the need for unnecessary additions, such as extra valves, hoses and fittings.

Hydraulic Diverter Valves

With this 6-way solenoid hydraulic diverter valve, you can control two separate double-acting circuits from the single directional control valve. This can be a great way to reduce the complexity of your hydraulic system, and shrink it into a much more convenient and manageable size, particularly for heavy-duty machinery and portable hydraulic systems.

You can control two double-acting cylinders or reversible hydraulic motors separately from a single valve.

For more information on any one of our hydraulic diverter valves, contact our friendly and specialised team.


Our Brushless Constant Running Pump

Hy-Pro has recently developed a ‘brushless constant running pump’ that is compatible with large yachts and other commercial craft.

The specialist pump offers a more reliable alternative, requiring less maintenance and offering increased performance. Read on to find out more information about why this pump could be much more beneficial compared to some of the other models out there.

What is a Brushless Constant Running Pump?

The brushless DC motor was designed by Hy-Pro specifically for marine autopilot applications, particularly in the large commercial boat market.

It is used for marine applications such as Trawlers and other commercial craft as well as some larger yachts, and is used to power the hydraulic steering system when the autopilot is in use.

A brushless motor means there is very little ongoing maintenance needed, as the pump is brushless the motor is controlled electronically. This gives us new options for performance moving forward.

The heavy vessels within ordinary hydraulic pumps require a lot of power to steer the vehicles. However, the new and innovative design of the Brushless Constant Running Pump goes against this rule. Instead of using a large DC motor, this pump runs continuously in one direction whilst a solenoid switches the hydraulic flow port and starboard – this saves the crew members having to manually steer the vessel.

For example, fishing boats can be at sea for many hours and the autopilot can be set to run a course or a pattern, this will allow the full crew to be on deck and working on other tasks.

How Does the Pump Work?

The hard-over time is set via the speed control and the steering action is achieved by switching a damped heavy duty double-acting solenoid valve.

The motor and precision gear pump is protected by a pre-set relief valve and check valves with toughened components, these positively lock the steering on course.

The pump has been developed for compatibility with both single and twin ram systems within the boat’s hydraulic steering. The specialist design is also suitable for unbalanced rams.

A ram, sometimes known as a steering cylinder is a critical part within the hydraulic steering system. Choosing the right ram is important to ensure the boat’s steering operates correctly and efficiently.

The brushless pump has also been designed to work alongside pressurised reservoir systems. This component holds the hydraulic fluid in a convenient part of the system and sustains any excess fluid needed.

What is the Pump Made?

Our pump has been integrated with flow output options and a compact construction. This aids in the pump’s durability and longer life span for functioning the steering of marine applications.

Our product has been made from aluminium and a large amount of copper, giving it good bearing properties and also a protective coating for harsh marine environments.

What are the Benefits?

The design consists of built-in overload protection and requires zero maintenance from the user.

In comparison to other models, the brushless motor has a much lower power consumption making it highly efficient. With 12V and 14V options available, this motor is an extremely heavy-duty alternative to others on the market.

This design could potentially replace the PC30 and PC45 in the future due to its convenience working alongside many other components and its futuristic design.

The integral speed control and relief valve also benefits its performance and contributes to a quieter operation.

This pump could be available as early as next year, so make sure you stay tuned for more updates on this pump.

If you’d like to find out more information about our brushless pump you can get in touch with us at Hy-Pro and we’d be happy to help!




METS Show in Holland – Hy-Pro Are Exhibiting!

The METSTRADE show is known for its global popularity in exhibiting marine and construction materials. Being the world’s largest trade show within this sector, the event specialises in B2B networking and are proud to welcome Hy-Pro’s exhibition stand, from 19th – 21st November.

What is the METSTRADE Show?

Based in Amsterdam, this trade show is a base in which marine leisure professionals can come together to market their products and connect with various international companies that share similar qualities.

This platform provides opportunities for marine brands across the globe to acquire strong leads and establish relationships with other employers. The MET Show ran their first show in 1988 and continues to expand on its visitors and exhibitors, including Hy-Pro.

Who Visits the Show?

The multi-award-winning trade show represents 121 different companies and their expertise in marine and construction equipment. This allows not only the attending companies but its audience to gather more advanced knowledge on the manufacture and trade of these products.

Last year’s show accommodated over 26,000 visitors, including both companies and prospects within the industry.

The worldwide event attracts great publicity and attention every year, due to obtaining some of the top global companies. Last year, 279 trade journalists attended the event.

Our Stand

Hy-Pro will be presenting a selection of our hydraulic autopilot drives that all comply with the new RCD requirements. We are proud to exhibit our range of products in the sense of their durability and overall productivity, providing purpose for a wide range of customers at the trade show.

Similar to our attendance in last year’s show, we intend to meet with many distributors and present them with solutions to any issues their facing and build on their knowledge of hydraulics.

We’re on stand 03.333 at the show this year and will be offering our marine customers a 15% discount for all orders we receive at the show for delivery in 2019.

This Year’s Pavilions

This year’s METS show will be accompanying three different pavilions for us to participate in. These categorise the expertise of the exhibitors attending the show into different specialities. The pavilions are as follows:

  • SuperYacht Pavilion
  • Construction Material Pavillion
  • Marina & Yard Pavilion

You can find more information on these and see the full list of exhibitors here.

The 2019 METSTRADE Show will be presenting a variety of stages for its exhibitors. There will be a platform for boat builders, designers and architects so that companies can exchange knowledge and present their work and materials alike. There will also be a ‘construction in process’ stage to offer more of an engaging and interactive display at the exhibition. This is the perfect platform to become inspired by the raw materials and processes that acquire them.

For more information on the different platforms the Metstrade Show will be offering, you can find out here.


To find out more information about our stand or to register as an attendee for this year’s METSTRADE Show, you can sign up to the list here. Alternatively, contact us at Hy-Pro for more information! If you’re coming along to the show please do stop by our stand and say hello, we’re looking forward to talking to you!

A Brief History of Hydraulics

Using fluid to generate movement within different machinery has been around for thousands of years. The uses of water power dates back as far as Ancient Egypt and it is still used to this day.

Hydraulic power is now all around us and is used in everyday life, powering many of our vehicles and even everyday objects like dishwashers.

Early Discovery

The first evidenced example of hydraulic power is the Perachora wheel, invented in 3rd century BC. The wheel presents one of the simpler models, and this provides an example of using the movement of water to generate power. Many historic entrepreneurs have elaborated on this invention and gradually made hydraulics more and more advanced over time.

In Rome, as early as 25 BC, water was used to power mills that generated the production of flour, stone and timber. It was even used in ‘hushing’, which was the process of extracting tin from lead ores. When people began to build more knowledge on the power of hydraulics this process was then converted into ‘hydraulic mining’ which was particularly helpful within the Californian Gold Rush in the mid-1800s.

The discovery of hydraulics initially began with a French mathematician and physicist named Blaise Pascal. Pascal’s Law was his dominant finding, and this explored the ideals that “pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure variations remain the same”. This law provided a template for the more advanced findings that took place later on in the next century.

Daniel Bernoulli later generated Bernoulli’s principle in 1738, which outlines the behaviour of fluids in various conditions of flow and height. This was particularly helpful for the development of high-pressured water pipes that relied on steam-driven pumps and mills to permit power over long distances.

While this finding was extraordinary at the time, electricity was proven to be more convenient and led to the evolution of combining both electricity and hydraulics to create a more efficient method of power.

Hydraulic Power

Towards the end of the eighteenth century, the hydraulic press came into creation. In 1795, Joseph Bramah used the knowledge sourced by Pascal’s Law for the invention of the hydraulic press.

This hydraulic press provided a pathway for the manufacturing of objects using printing presses, cranes and different forms of machinery.

After a short period of time, the Americans combined this knowledge with their understanding of electricity to generate hydro-power. It was around this point that hydraulic power plants began to be built.

In the late nineteenth century, the first hydro-power scheme came about, William George Armstrong was the founder of this idea, however he decided shortly after that this wasn’t the most efficient way to harness energy. Instead, he began designing the rotary engine, powered by water. Unfortunately, this engine was also unsuccessful and not many people showed interest in his design.

Following this idea, determined to construct an efficient and successful form of hydro-power, Armstrong took upon redesigning the engine and created the piston engine instead.

The piston engine led to the growing development of the hydraulic power-pipe networks. These networks carried power across various locations from one main power source via the movement of water. This was particularly successful in powering cranes across Britain and even in other countries like Switzerland.

Armstrong’s invention had proven to progress much further than any other hydraulic invention, however, there was still a lot of room for improvement. Eventually they realised that H2O was a basic element to persist in hydro-power and in fact oil was more suitable. Some of the key benefits that led to this discovery were that oil proves to be a lot less susceptible to evaporation when operating a machine. Also, a non-corrosive type of oil would be able to perform a lot better, without damaging the machine.

The Use of Hydraulics Today

The rapid evolution of hydraulics has led to a robust and efficient form of hydro-power that we still use today.

This system provides up to ten times more power than an electric motor, making it extremely helpful when lifting and moving heavy objects. The precise mechanics make it a safer alternative than electricity alone and therefore it is better for using around workers and people.

This list of progressive benefits has led to the popularity of hydraulics and its large number of uses within construction, shipping and manufacturing.


For more information on how hydraulics have developed over time and become helpful towards the products that we manufacture here at Hy-Pro, you can contact us on 01626 863634 to speak to a member of our team.


Why HyPro Manufacture In-House

Here at HyPro, all of our products are designed and manufactured in house. We pride ourselves on their quality, so manufacturing in-house provides a whole host of benefits to us as a business, and to you, our customer.

So, what are the benefits?


As our customer, we know that the quality of your products matters to you as much as it does to us. You need to know the products you order are of the standard you expect and will perform as intended upon use.

By making all of our products in house, we can ensure the quality is perfect.  In-house manufacturing means businesses like us can constantly be tracking our manufacturing process and follow stricter procedures than if we were to outsource this.

We’re always updating our quality control procedures, using the latest measuring equipment, including CMM machines, lasers and other probing apparatus to test all of our equipment before sale and distribution.

Our hydraulic components are top of the range; they’re made to very tight tolerances, often to 2 tenths of a thousandth of an inch, to achieve minimum leakage without sticking.


When it comes to subcontractors, manufacturing in-house also holds other benefits. Since there are a limited number of aerospace contractors who can create tolerances in components so high, they tend to be expensive.

Because we’re able to machine parts on our premises at cost price, we can create products of the highest standard and lowest price for our consumers. Subcontractors would have to add a significant mark-up to products manufactured elsewhere. We’re constantly striving to provide the best quality products at the most affordable price.

What’s more, the manufacturing team have easy access to the design team and can communicate directly about design elements and ensure the parts are made in the most efficient and effective way.

On Time Delivery

One huge bonus of manufacturing our products in house is the ability to meet demand from our customers and react to the market quickly– we’re able to machine what we want to when we want to.

This means we can respond quickly to orders and deliver the most efficient service for our customers.

We are helped by our state of the art machinery which includes pallet loading 5 axis machinery and sliding head lathes. These are capable of running “lights out” and unmanned so production can continue even in the early hours to meet constant demands from OEMs and distributors.


Having machinery on site means we are able to make experimental and prototype components at the whim of our design engineers.  This means we can develop and expand our range quickly to suit new applications for our customers and continually improve our designs.

If you’re looking for new hydraulic equipment or are interested in what we do – find out more about us at HyPro here.