Siphonic Roof Rainwater Drainage System

This pump requires no external power as it is activated by rainfall filling the drain beyond its anti vortex plate at which point air flow to the pipe is cut off.

Siphonic roof rainwater drainage system.

The original full bore flow roof rainwater drainage system. Many large industrial commercial and retail buildings are now fitted with siphonic drainage which has clear advantages over gravity drainage. Unlike traditional roof drainage which is designed to flow part full a siphonic system operates at full capacity when water is sucked or siphoned from the roof down into the drain at high velocity. Despite what its name may suggest the process of syphonic drainage does not actually involve the syphoning of water at all.

Air baffle creates siphonic drainage action producing a more efficient drainage than traditional gutter drains. Siphonic roof drainage systems at low rainfall intensities and flow rates a siphonic system operates similarly to a conventional system with water flowing through the pipe network at atmospheric pressure. Instead syphonic drainage technology employs the use of a gravity induced vacuum pump to remove water at high velocity from multiple roof drains at once. Aco siphonic drainage traffic free roof areas which are no larger than 150 m2 such as production buildings hangars or sports stadiums are suitable applications for siphonic drainage.

Siphonic drainage was first introduced in the 1960 s in scandinavia and since then has been used widely across europe including the uk in the far east australasia south africa and the usa. Pipes run level and full without air. For use in engineered siphonic roof drain age systems for gutters parapets small balconies sills cornices marquees and other small overhanging areas where drainage of rainwater is required. A siphonic roof drain has a special insert that acts as an air baffle and anti vortex vane such that only water is drawn off of the roof not air.

Fewer roof outlets and downpipes smaller pipe diameter shorter pipe lengths takes up less space and reduces installation costs. Siphonics roofing in principle siphonic drainage is a very simple process. The advantages of a wavin quickstream siphonic roof drainage system. Unlike traditional roof drainage systems a siphonic system is designed to operate with the piping completely charged with water during a rainstorm.

Higher flow rates increases efficiency. Jas siphonic is a specialist supplier of siphonic roof drainage systems. A siphonic roof drainage system however is said to prime during storm events and operate filled with water. The lack of air and the downward pull of the water creates a vacuum making the drainage process fast and efficent.