Consultants
/Specifiers
For people who would like to know more about how to specify our products in their plans
hotun hiflo® – the tundish evolved
hotun and hotun hiflo are patented, dry trap tundishes, that allow a safe and visible means of discharge from a sealed system boiler or unvented water heater’s Temperature/Pressure Relief Valve to be compliantly connected to an internal waste or soil pipe without allowing foul odours back into the building
All our products allow for easy identification of historical PRV discharge without the need to dismantle the connection
hotun (15/22) has a steady state flow rate of 12L/min
hotun hiflo (15/32) has an independently verified steady state flow rate of 18L/min
Consultants
Installers
For anyone who wants to know more about our products and how to install, warranty and service them
Merchants
For merchants who want to know how to supply our products
Endorsements and Accreditations
Worcester Bosch announce, via Technical Bulletin 0121a allowing the use of hotun hiflo (with hotun shield) to combine the PRV and condense to drain
Click here for the bulletin as a pdf
Martyn Bridges Technical Director at Worcester Bosch UK states
“The hotun hiflo [dry trap tundish] is a good solution to the issue of PRV discharge pipes from a sealed heating system into a waste water system provided that the waste [and soil] pipes are of a standard to accept the expected temperatures and pressures of the discharging water”
Martin Butcher, Technologies Specification Manager at Vaillant UK states
“The hotun addresses the issue of removing outflow from a sealed system pressure relief valve into an internal waste or soil pipe, preventing foul odours back into the building when connected to discharge pipes specified as suitable for the temperatures and pressures involved in the system”
For typical boiler installation configurations please click here
“The hotun hiflo is acceptable for use with ideal condensing boilers, it offers a useful solution to the issue of combining a sealed system boiler pressure relief discharge and condensate pipe into a single termination point to a buildings waste water system. Please note that the waste pipes need to be of a standard to accept the potential pressures and or temperatures involved with a sealed system under discharge scenarios”
Andrew Dabin – Domestic Product Manager Ideal Boilers
For more information see their March ’17 Product Bulletin here
We’ve produced some new videos showing the flow characteristics of hotun
See hotun featured in Ariston’s clip of their new Andris Lux unvented water heater
The video automatically starts in the right place (5m 47s)
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hotun and hotun hiflo are patented, dry trap tundishes and are accepted for use by all the following companies;
Tags; hotun dry trap tundish safe PRV discharge to local drain no odours. hotun is a unique patented product which has an inbuilt dry trap valve to prevent odours coming up from the drain when an connection is made between the boiler or unvented cylinder pressure relief valve PRV and a local waste pipe or foul drain. Common terms for searches include plumbing tundish, tundish valve, tundish inbuilt valve, plumbing, tundish adapter, waste valve, unvented hot water heater, boiler, pressure relief valve, prv, discharge, condensate drain. The installation for a tundish for an unvented hot water cylinders are governed by the building and water regulations. For cylinders over 15 liters capacity an installer must have G3 accreditation. Regulations covering the pressure relief discharge from boilers are governed by the same water and building regulations but the boiler manufacturers can also determine acceptable installation methods. hotun has WRAS approval, it is a tundish with non return valve. Other common search terms are dry trap tundish, PRV, membrane valve, waterless valve, tundish screwfix, tundish plumbing, what is a tundish, A tundish and integral valve to prevent odours, Which? tundish topics
Product Registration
Click above to register your hotun product. You must do this in order to be eligible for the Warranty.