PUMPS, VALVES & HYDRAULICS
Articulated Arm Designed and Built for Amarinth Ltd
Rotaflow is a global leader in swivel joint design and manufacture. We engage with clients all over the globe to produce swivel joints for a wide range of industrial uses, from food and drink production, pharmaceutical, process & plant to subsea oil and gas extraction. If there’s a need for a swivel joint in an industry, there’s a better than not chance we’ve supplied it!
A large part of our business is in the custom building of swivel joints. When clients have specialist needs, or an off-the-shelf solution simply won’t do, our in-house team of designers and engineers will produce swivel joints fit for specific purpose. Thanks to the tried and trusted reputation Rotaflow has built up over 4 decades, clients return to us again and again for their swivel joints.
One such custom design was for Amarinth Ltd, the global pump manufacturer. They had approached us with a problem that was going to require a custom solution, because off-the-shelf simply wouldn’t work.
They asked us to design and build an articulating arm that will serve as a part of their pump testing equipment. The arm is designed to enable efficient connection to variously
sized pumps. Our design ensures that the pump testing process is smooth and effective, saving a lot of wasted time for Amarinth and their customers.
In a world where time and efficiency are of utmost importance, any delays can be costly. By engaging Rotaflow to design the articulating arm, it reduces the time taken to test the pumps. In manufacturing every small saving of time adds up, shortening the overall process and reducing the time is takes to deliver products to customers.
Technical Aspects of the Articulating Arm The arm has 4 10" Swivels to provide the range of articulation required. It has to cope with a lot of positional manipulation, so having 4 points of rotation make this possible. We design as efficiently as possible and this was the minimum we could fit into the arm and still enable it to deliver all of the movements and functionality required.
The arm is designed for operation 50 Bar. At Rotaflow we have the capability to pressure test every joint we produce even in our custom-built hyperbaric testing chamber if the application requires. We have tested the arm at Rotaflow to 75 Bar, so can be satisfied it is more than able to cope with the tasks set for it.
By testing in-house we can adapt designs based on data and can be confident that everything we send out of the door is absolutely fit for purpose and certified as so. It also reduces our lead times on equipment – all of our designing, manufacturing and testing is done in-house, so we don’t have to factor in long delays as products are sent off site for testing.
This element of control also allows us to accurately forecast a completion date for a project, so both our team and our customers know what to expect and when to expect it.
The dynamic sealing surfaces have been overlaid with Stainless Steel to provide corrosion protection to the most important sealing surfaces. We have our own multi-stage method of overlaying stainless steel that has been developed over many years. It’s a process that means we can be very confident about the level of corrosion resistance the sealing surfaces have.
photo credit: Amarinth 42
www.sosmagazine.biz September 2021
This design allows for the use of lower cost Carbon Steel for the rest of the structure without compromising build quality. This approach provides strength and structural integrity where it is needed most, but the appropriate use
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