Improved self-closing patch fitting

Bohle has launched an improved version of the Alva self-closing hydraulic patch fitting.

The new Alva patch fitting is easier to install, the company said, as it can be secured with two screws instead of four. There is now 29mm between the first hole in the baseplate and the wall, which gives fitters more room to position a drill.

Once in place, four grub screws can be used to fine tune the vertical alignment of the door and the zero-position setting, with horizontal adjustment offered via a single, easily accessible screw.

Suitable for both interior and exterior applications, all the technology required for operation is packaged in one slimline unit, which means it can be fitted directly onto the floor, instead of creating a recess to house an underfloor box.

Manufactured to DIN EN 1154 European quality standards, which includes 500,000 test cycles, Alva is the first self-closing corner fitting on the market to feature an integrated ‘back check’ adjustable damper, the company said. This has been designed to protect against any sudden and excessive force against the door, for example a gust of wind, by gently and safely absorbing its momentum. The opening damping starts at an angle of approximately 75º and is adjustable.

There are no visible screws or fastening points on the cover caps and base plate, and slightly rounded corners and black inserts create the impression of a shadow gap.

Dave Broxton, managing director of Bohle, said: “The previous Alva hydraulic patch fitting was an exceptional product, but we are constantly looking at ways to improve our offering at Bohle and we identified a number of areas in which it could be enhanced even further.”