Press freedom boosts refurbishment

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Published: 17 October 2018


Kent-based Doveley Air used Conex Bänninger’s >B< MaxiPro press fittings to install a new air conditioning system in a former Victorian townhouse close to Buckingham Palace.

The office space has undergone a major refurbishment and Doveley Air was awarded the contract to commission and install the new system, which included 24 Daikin VRV units.
Due to the nature and layout of the building, some of the pipework needed to be fitted to the ceilings. This meant that securing the pipe joints with traditional brazing methods was not an option.

Doveley Air managing director Peter Notley specified the >B< MaxiPro press fittings, a mechanical, flame-free press-fit solution specifically designed for air conditioning and refrigeration systems. >B< MaxiPro is capable of operating successfully up to 48 bar with a temperature range of -40℃ to 121℃.

He said: “The core benefit of >B< MaxiPro for this particular project was the fact that it is flame-free. This doesn’t just speed up the jointing process dramatically when compared to brazing, but is also negates the need of us needing a hot works permit on-site, which saves even more time and money.

“Once the initial preparation of the joint is complete, it takes a mere five seconds to complete with a press tool. The >B< MaxiPro fittings were used for more than 100 joints, so if you compare this to brazing you can calculate that the speed we were able to carry out for this part of the project was remarkable. Overall the whole process was safer, much quicker and therefore much more productive than if we had used the brazing method.”

With 3-point-press technology (one each side of the bead and one compressing the O-ring), >B< MaxiPro is available in a range fittings types including: straight coupler, reducing coupler, fitting reducer, 90° bend, 90° street bend, 45° obtuse elbow, equal tee and stop end variants.

>B< MaxiPro comes with a manufacturer’s 12-month warranty as standard. For engineers who complete the product training course and become a certified >B< Maxipro installer, this warranty is extended up to five years (terms and conditions apply). 

Conex Bänninger recommends the use of Rothenberger Romax Compact TT press tools and the >B< MaxiPro jaws to be used in conjunction with the fittings.

>B< MaxiPro fittings can be used with annealed, half hard or hard copper tube that conforms to EN 12735-1 or ASTM-B280 in air-conditioning and refrigeration applications.  They are also approved for use with a range of refrigerants, including R32, R134a, R404A, R407C, R407F, R410A, R507, R1234ze, R1234yf, R718, R450A, R513A, R448A, R449A, R407A, R427A, R-438A, R-417A and R422D.