Siphonic Roof Drainage System

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.

Siphonic roof drainage system.

Jas siphonic is a specialist supplier of siphonic roof drainage systems. Wade siphonic drainage design request. Wh 300 400 500 600 siphonic primary roof drain. In a world where our weather patterns are becoming more extreme hydromax provide world leading siphonic syphonic drainage solutions for a range of projects.

Many large industrial commercial and retail buildings are now fitted with siphonic drainage which has clear advantages over gravity drainage. This can only be achieved by assuring that no air is sucked in with the rain water and no bubble vortexes formed in the pipe system. Despite what its name may suggest the process of syphonic drainage does not actually involve the syphoning of water at all. Siphonic drainage systems operate with specially designed flat roof drains which unlike gravity drainage systems are configured to work with completely full pipes degree of fill h d 1 0.

With a flat level design long horizontal runs above overhead ceilings are pos sible as shown in illustration 4. Wh 301 401 501 601 siphonic overflow drain. Wh 300 pg wh 400 pg siphonic deck drain. The water is sucked or siphoned from the roof down into the drain at high velocity.

Siphonic roof drainage is not so much a system in terms of a pre engineered product or package. 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. 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. 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.

Uv system designs and supplies its line of top performing siphonic roof drains to projects throughout the united states canada and mexico. By contrast a fully engineered siphonic roof drainage system contains an anti vortex plate that acts as a baffle and prevents air and debris from entering the piping system at full flow allowing the pipes to completely fill up with water. Unlike traditional roof drainage systems a siphonic system is designed to operate with the piping completely charged with water during a rainstorm. It is instead a technique of no pitch pipe design used to achieve desired flow from roof drains to point s of discharge.