Siphonic Roof Drainage System

Wh 300 pg wh 400 pg siphonic deck drain.

Siphonic roof drainage system.

Wh 300 400 500 600 siphonic primary roof drain. As a result the pipes have lower atmospheric pressure than the outside environment. Thus when water enters the drain it meets an area of lower pressure in the drain and is pulled in faster than it would be by gravity alone. Baffle and prevents air and debris from entering the piping system at full flow allowing the pipes to completely fill up with water.

A siphonic roof drain looks much like a traditional roof drain. The distinguishing feature of a siphonic roof drain is the air baffle. A siphonic drainage system has on the drainage points a baffle that prevents air from entering the 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.

The siphonic roof drainage system is based on the ingenious gravity induced vacuum principle. Comprising high quality stainless steel siphonic roof outlets high density polyethylene hdpe pipes fittings and a professional support package the siphonic roof drainage system allows the complete drainage of a roof without the requirement of a slope in the pipework thus saving valuable space. Atmospheric other than the baffle a siphonic roof drain has the same features. This air baffle is engineered and tested to prevent air from entering the piping system at peak flows.

A siphonic roof drain system is truly an engineered system to design a traditional roof drain system by code plumbing engineers simply follow prescriptive instructions in the code and read off of pre calculated standardized charts. Siphonic systems must be designed with careful and expert analysis otherwise unfamiliar to a majority of. The water is sucked or siphoned from the roof down into the drain at high velocity. By contrast a fully engineered siphonic roof drainage system contains an anti vortex plate that acts as a.

Wh 301 401 501 601 siphonic overflow drain. 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. Many large industrial commercial and retail buildings are now fitted with siphonic drainage which has clear advantages over gravity drainage. A syphonic drainage system is not only cheaper to construct than a typical roof drainage system especially when a large industrial roof has to be covered but the system s design means there is no need for the pipe pitch or gradients found in typical roof drain piping.