A customer received some feedback regarding an issue with a set of leaking flat face couplings and heavy brinelling* evident on the male part of the coupling.
Holmbury prides itself on the quality of all our products, so it was a priority for us to ensure these couplings made their way back to undergo rigorous inspection at our state-of-the-art test facility in Tonbridge, Kent. Once the goods arrived at our site, we carried out our standard inspection checks and tests. Supporting report documentation, complete with images, to convey our findings was prepared for the customer.
Our investigation had revealed the leakage was due to the seals being extruded alongside the very clear brinelling. Further discussions with our customer followed and we learned the couplings had been subjected to a combination of extreme pulsing and hose vibration which on this occasion took the application out of the performance zone of the HQ flat face series. It was clear to our technical team that our customer required a different coupling solution to resolve this issue. Holmbury advised that our HFT series could be a good solution.
HFT series screw to connect couplings incorporate all the benefits from our HQ range, whilst simultaneously strengthening the connection. Eliminating brinelling. Connection and disconnection can take place at high residual pressure in both the female and the male coupling, thus make the HFT series an ideal solution for high pressure pulses.
Our customer purchased several sets of the HFT series couplings and throughout the last 6 months we’ve had no recurrence or issues.
Holmbury continues to work closely with our customers when problems arise. Modern machines which, on the surface do the same job as they always have, have higher performance characteristics than previous models meaning higher performing couplings are sometimes required.
Rest assured that our team will always be ready to offer technical support when you need it and a solution to keep your equipment up and running.
For more information, please visit the rest of our website or call our sales office on 01732 378912.
* What is Brinelling? Brinelling is a type of mechanical damage that occurs on the surface of a metal object when it is subjected to extreme pulsation – in the case of a quick release coupling the ball bearings cause indentations to the coupling itself generally due to the above and excessive side loading of a heavy, unsupported hose assembly.
Holmbury are renowned for our market leading Flat Faced (HQ) range of hydraulic quick release couplings. First designed in 1984, the series took the market by storm and soon became a hugely recognised name within the industry. In 1999 the Holmbury design was adopted to form the ISO standard 16028. Since then, our range of couplings has expanded to accommodate Flat Faced, ISO A, Multi Couplers, Agricultural, Screw to connect along with many others and covers all size requirements from ¼ to 2”.
Ball Valves Carbon and Stainless Steel
BVC2 & BVS2
But did you know that Holmbury also offer a range of high-pressure ball valves in both carbon and stainless steel? Our BVC2 & BVS2 series offer a full-bore, unrestricted flow with negligible pressure drops. The floating ball design provides effective sealing, with one-piece body delivering both a high-pressure rating and superior strength.
‘L’ and ‘T’ Ported Ball Vales Carbon and Stainless Steel
BVC3 & BVS3
Holmbury also market a full range of L and T port options or three ways, with mounting holes and ergonomically designed handles which aids in fitting and clearance. Both carbon and stainless-steel valves start from ¼ BSP up to 2” BSP. You can also have other threads options such as NPTF and UNF.
Along with the ball valves themselves, Holmbury offers spare handles in either a straight or offset orientation (both carbon and stainless steel) and locking kits.
Holmbury HQ series flat faced couplings are used on many, many applications, and attachments. Here are just a few. Thanks to FH & J Alviti for their participation! Visit the following link to see them in action…
https://www.linkedin.com/feed/update/urn:li:activity:6951096166356799488
Yet another exciting development for us, as Holmbury introduce our Android App! Having already launched the app for IOS devices in December 2021, we are delighted to now be able to offer this useful tool on even more devices…
Why not make the change?
For more information on the new Multi Coupling range please contact our sales office or take a look on the Home or Product section on our web-site.
The three main products that make up this offering include:
The HDB Series – a full replacement decompression block to replace existing blocks on skid steer loaders (Including JCB, Bobcat, John Deere etc.). The HDB Series can be found on JCB’s new Teleskid machine.
The FFC Series – a replacement flat face cartridge coupling for the Faster 4BD4FH and 4BD4FI blocks fitted to Bobcat and other skid steer machines.
The H90 Series – a 90 degree coupling ideal for small clearances often found on skid steer hydraulic systems.
Launching today at CONEXPO/IFPE 2017, Holmbury are excited to announce a new product added to our range- The FFC Series.
Holmbury’s FFC Series is a replacement flat face cartridge coupler for the Faster 4BD4FH and 4BD4FI blocks. The FFC Series is designed for the quick changeover of hydraulic attachments for skid steer loaders, compact loaders, backhoe loaders and compact utility vehicles. The female coupler features an internal decompression solution (Patent pending) that enables the coupler to always be depressurized when disconnected, whilst the male coupler has built-in connect under pressure functionali
To find out more information about Holmbury’s FFC Series, or to view the data sheet click here. To discuss with our sales team please contact us.
Holmbury are excited to announce a new product added to our range- The KM Series.
The KM Series is available in two variants; the KM 115 Series (1000 Bar maximum working pressure with grey zinc nickel plating) and the KM 116 Series (1500 Bar maximum working pressure with black zinc nickel plating). Both variants are designed primarily for use in bolt tensioners and other high pressure applications.
To find out more information about Holmbury’s KM Series, or to view the data sheet click here.
To discuss with our sales team please contact us.
