Pressure Assisted Rainwater Management System “RainPulse”
Rainpulse utilises the benefits of gravity drainage in a straight drop pipe manner and syphonic drainage for full bore use of the pipes. This ensures that Rainpulse is the most efficient and safest way of taking water from a roof to ground drainage. NBS has called this drainage method a "Pressure Assisted Rainwater System" or PARS for short, within NBS R10 section 130. Further details for Pressure Assisted Rainwater Systems can be found through NBS or NBS Plus.
Rainpulse does not require a primary and secondary system, Rainpulse requires fewer downpipes and Rainpulse outlets act independently from each other to ensure ultimate efficiency. This efficiency can only bring cost savings and increased security for your building. Pressure Assisted rainwater systems (PARS) are the way forward in roof to ground drainage for commercial and industrial buildings.
Our Pressure Assisted rainwater management system "RainPulse" is best described as a system that operates generally in a gravity (single drop) manner until the rainwater intensity is such that the level of water coming from the roof reaches optimum operating level of approximately 40mm within the gutter. When the water reaches optimum operating level, the outlets pulse. The pulse is created by the pipes filling with rainwater and creating a full bore pull on the rainwater until the level in the gutter drops below operating level. At this point the outlet reverts back to a basic gravity fed system. Rainpulse is "patent pending"
Dedicated Website
CGL have set up a website specific to "Rainpulse" to fully detail the system, components and the benefits of the rainwater management system. The site also has a video of the outlets and pipes in action. To go to the site please click here www.rainpulse.co.uk
What’s The Difference Between Gravity Drainage and RainPulse?
In a current gravity drainage calculation to BS EN 12056-3: 2000 there is a restriction on how much water can flow due to the design of the outlet and the natural flow of water. The Rainpulse outlet is specifically designed to ensure that the water flow is maximised and flow restrictions are taken away. In heavy downpours the pipes operate at full bore creating a full bore pull on the water. Effectively the system works at its best in this situation.
What’s The Difference Between Syphonic and RainPulse?
In syphonic drainage all the outlets are linked together to one common horizontal collection pipe, running internally throughout the length or width of the building. In the RainPulse system each outlet and pipe set work independent of each other. With a syphonic system there is a risk of having rainwater discharging from the roof and remaining inside the building, throughout the horizontal collector pipe, until it discharges at the end of the building. With the RainPulse system the water is taken straight down the pipes vertically and out the building quickly. In a syphonic system any outlets or sections of pipe that become blocked will result in the system potentially failing its design requirements and putting the building at risk . If this problem occurs with RainPulse, the overall gutter discharge system will still operate to its design requirements because the outlets operate and discharge independently, allowing the remaining unblocked outlets to pulse at more regular intervals to meet the increased demand creating no extra risk or capacity load to the gutter system hence reducing potential risk.
