Siphonic Roof Drainage System

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.

Siphonic roof drainage system.

With a flat level design long horizontal runs above overhead ceilings are pos sible as shown in illustration 4. 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. 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. Wh 301 401 501 601 siphonic overflow drain.

Despite what its name may suggest the process of syphonic drainage does not actually involve the syphoning of water at all. Wh 300 400 500 600 siphonic primary roof drain. 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. 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.

Wade siphonic drainage design request. 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. The water is sucked or siphoned from the roof down into the drain at high velocity. It is instead a technique of no pitch pipe design used to achieve desired flow from roof drains to point s of discharge.