Patented Roof Drains

In one embodiment the strainer contains a peripheral flange which is rolled into the large horizontal flange of the base during fabrication.

Patented roof drains.

And there is also the patented backwater valve. Reiger et al was found from 1935 displaying inventor melvin a. Always remember to check your chosen roof drain periodically because it can become jammed with ice garbage or other unwanted items. The distinguishing feature of a siphonic roof drain is the air baffle.

The attachment means is characterized by being simple and permanent. Roof drainage requirements specifications. This article describes several methods for determining the drainage capacity required to safely drain water off of building roofs whether from rainfall melting snow or a combination of those water sources. Shop for roof drains at ferguson.

Zurn currently produces the greatest number of variations for roof drains with many options to choose from. This air baffle is engineered and tested to prevent air from entering the piping system at peak flows. Other than the baffle a siphonic roof drain has the same features as a traditional roof drain including a drain body flashing ring dome strainer and fastening hardware. Froet industries began by manufacturing their patented bi functional roof drain.

Zurn s oldest catalog on record dates back to 1951 displaying no. We will provide a diagram to show you how it works. It s basically a primary roof drain and an overflow combined into one drain. Co a siphonic roof drain looks much like a traditional roof drain.

We describe online roof drainage requirements calculators pertinent plumbing standards a table approach to looking up roof drainage. The distinguishing feature of a siphonic roof drain is the air baffle. Zurn drains offer history and. Google patents an exemplary embodiment providing one or more improvements includes a positive acting sensor which detects the flow of water through a flat roof secondary or emergency roof drain.

Roof drains are used to collect rainfall water which travels to the sewage or drainage system through available plumbing lines. An improved roof drain having a wide flange a base and a means to secure attachments such as strainers to the base. This air baffle is engineered and tested to prevent air from entering the piping system at peak flows. Ferguson is the 1 us plumbing supply company and a top distributor of hvac parts waterworks supplies and mro products.