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^Russell
The 5 5enses of hotun are unique to the hotun dry trap tundish
Check out the product differentiators for all hotun tundishes
These differentiators are why hotun stands head and shoulders above alternative products
hotun – copied but never bettered
SIGHT
Sense 1:
With its open sided construction the home owner or engineer can easily see any water in the bowl of the tundish giving a visual fault indicator – NO OTHER dry trap on the market allows for the ability to see the residual water after the PRV has stopped dripping – If you cant see it you cant diagnose it!
TOUCH:
Sense 2:
The easily accessible tundish bowl allows the installer to verify if water has been passing – meaning that you can be sure of your diagnosis. PLUS, if the hotun valve ever needed maintenance it can be easily cleaned without having to remove the tundish from the pipeline (some dry traps cant even be serviced!)
SMELL
Sense 3:
To ensure your dry trap doesn’t pass any nasty whiffs or noxious fumes into the building, carry out your own manual pressure test to verify! If it passes air, it doesnt comply. The hotun dry trap tundish is pressure tested to comply with Building Regulations H1 c. “prevents foul air from the drainage system from entering the building….”
HEAR
Sense 4:
With the ability to upgrade your hotun dry trap tundish to the hotun detect alarm unit, you canbe sure that your customer has peace of mind knowing they will get an automatic audible warning fault indicator and avoid either a boiler lock out due to low pressure or wasting water on an unvented water heater passing unnoticed.
TASTE
Sense 5:
Available in both black and white, compression and pushfit inlet variants, if you use hotun you can choose the colour to suit your taste and the choice of your connection, no need to swap from manufacturer to manufacturer to get the colour tundish and connection that you want, just keep with hotun! So simply choose hotun to keep your options completely open!
Downloadable images for the hotun dry trap tundish – 100C range
NOTE:
Product update – hotun 100C dry trap tundishes
As from 1st January 2025, ALL hotun 100C range dry trap tundishes are now sold complete with hotun protect (ventilated) shield (HP100C) as standard.
![](https://hotun.co.uk/wp-content/uploads/2025/01/image-of-ventilated-shield-for-tundish-name-hotun-protect-100c-part-number-hp100c.png)
Product Name & Type:
hotun white 100C 15×22
15mm compression inlet
22mm compression outlet
dry trap tundish
Product Code & Performance:
HW100C 15×22
Rated Flow – 12LPM
Max Flow – 16LPM
Product Applications:
“Low volume” PRV discharges
EG Boiler, HIU & Small Unvented Water Heater PRV’s, FCU and MVHR drip trays and water tank overflow’s (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun white 100C 15×22
Alternative picture
Product Code & Performance:
HW100C 15×22
Alternative picture
Product Applications:
“Low volume” PRV discharges
EG Boiler, HIU & Small Unvented Water Heater PRV’s, FCU and MVHR drip trays and water tank overflow’s (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun black 100C 15×22
15mm compression inlet
22mm compression outlet
dry trap tundish
Product Code & Performance:
HB100C 15×22
Rated Flow – 12LP
Max Flow – 16LPM
Product Applications:
“Low volume” PRV discharges
EG Boiler, HIU & Small Unvented Water Heater PRV’s, FCU and MVHR drip trays and water tank overflow’s (to be used in conjunction with hotun detect alarm unit)
![](https://hotun.co.uk/wp-content/uploads/2025/01/image-of-dry-trap-tundish-name-hotun-white-15x22-part-number-hw100c-15x22-.png)
![](https://hotun.co.uk/wp-content/uploads/2025/01/image-of-dry-trap-tundish-name-hotun-white-15x22-part-number-hw100c-15x22-cut-through.png)
![](https://hotun.co.uk/wp-content/uploads/2025/01/image-of-dry-trap-tundish-name-hotun-black-15x22-part-number-hb100c-15x22-1.png)
![](https://hotun.co.uk/wp-content/uploads/2024/05/Product-Picture-210-PNG-hotun-black-hotun-detect-hotun-protect-Group.png)
Product Name & Type:
hotun hiflo white 100C 15×32
15mm compression inlet
32mm push fit outlet
dry trap tundish
Product Code & Performance:
HHW100C 15×32
Rated Flow – 18LPM
Max Flow – 20LPM
Product Applications:
“High volume” (T/PRV) discharges
EG Large Unvented Water Heater T/PRV’s, and all other PRV discharges ie Boilers & HIU’s, also FCU and MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun hiflo white 100C 15×32
Alternative picture
Product Code & Performance:
HHW100C 15×32
Alternative picture
Product Applications:
“High volume” (T/PRV) discharges
EG Large Unvented Water Heater T/PRV’s, and all other PRV discharges ie Boilers & HIU’s, also FCU and MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun hiflo black 100C 15×32
15mm compression inlet
32mm push fit outlet
dry trap tundish
Product Code & Performance:
HHB100C 15×22
Rated Flow – 18LPM
Max Flow – 20LPM
Product Applications:
“High volume” (T/PRV) discharges
EG Large Unvented Water Heater T/PRV’s, and all other PRV discharges ie Boilers & HIU’s, also FCU and MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Downloadable images for the hotun dry trap tundish – SF Range
Product Name & Type:
hotun white SF 15×22
15mm push fit inlet
22mm compression outlet
dry trap tundish
Product Code & Performance:
HWSF 15×22
Rated Flow – 16LPM
Max Flow – 22LPM
Product Applications:
“Low volume” PRV discharges
EG Boiler PRV’s, HIU’s, Small Unvented Water Heaters, FCU and MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun black SF 15×22
15mm push fit inlet
22mm compression outlet
dry trap tundish
Product Code & Performance:
HBSF 15×22
Rated Flow – 16LPM
Max Flow – 22LPM
Product Applications:
“Low volume” PRV discharges
EG Boiler PRV’s, HIU’s, Small Unvented Water Heaters, FCU and MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun hiflo white SF 15×32
15mm push fit inlet
32mm pushfit outlet
dry trap tundish
Product Code & Performance:
HHWSF 15×32
Rated Flow – 24LPM
Max Flow – 45LPM
Product Applications:
“High volume” (T/PRV) discharges
EG Boiler PRV’s, HIU’s, Small Unvented Water Heaters, FCU and MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun hiflo white SF 15×32
Alternative picture
Product Code & Performance:
HHWSF 15×32
Alternative picture
Product Applications:
“High volume” (T/PRV) discharges
EG Large Unvented Water Heaters, and all other PRV discharges ie Boilers & HIU’s also FCU MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun hiflo black SF 15×32
15mm push fit inlet
32mm push fit outlet
dry trap tundish
Product Code & Performance:
HHBSF 15×32
Rated Flow – 24LPM
Max Flow – 45LPM
Product Applications:
“High volume” (T/PRV) discharges
EG Large Unvented Water Heaters, and all other PRV discharges ie Boilers & HIU’s also FCU MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Product Name & Type:
hotun XLSF 22×32
22mm push fit inlet
32mm push fit outlet
dry trap tundish
Product Code & Performance:
HXLSF 22×32
Rated Flow – 40LPM
Max Flow – 54LPM
Product Applications:
All
EG Large Unvented Water Heaters (TPRV), Small Unvented Water Heaters (PRV), and all other PRV discharges ie Boilers & HIU’s also FCU MVHR drip trays and water tank overflows (to be used in conjunction with hotun detect alarm unit)
Downloadable images for the hotun 100C protect/shield and SF shield
Product Name & Type
hotun protect 100C
A removable, ventilated shield, for the 100C range of dry trap tundishes
Product Code:
HP100C
Product Applications:
Can be fitted on the hotun 100C range of tundishes and used in all applications as the protect shield has sufficient free area to maintain the hotun 100C dry trap tundishes designation of an “Air Break to Drain” and protects against catagory 5 risk backflow contamination of potable (wholesome) water supplies. (See Technical Bulletin TBRA 0104)
(Can be used in conjunction with hotun detect alarm unit without modification)
Note – hotun protect shield can be used on all applications EG boilers AND unvented water heaters
Product Name and Type
hotun shield 100C
A removable, solid shield, for the 100C range of dry trap tundishes
Product Code:
HS100C
Product Applications:
Can be fitted on the hotun 100C range of tundishes and used in applications that do not need to maintain an “Air Break to Drain” designation (EG water tank overflows) as the solid shield has no free area to maintain the hotun 100C dry trap tundishes designation of an “Air Break to Drain” and therefore does NOT protect against catagory 5 risk backflow contamination of potable (wholesome) water supplies.
(Can be used in conjunction with hotun detect alarm unit if the cut out is removed)
WARNING – The solid shield must NOT be used on applications that are in fluid connection with a potable (wholesome) water supply EG Unvented Water Heaters
Product Name and Type:
hotun shield SF
A removable, solid shield, for the SF range of dry trap tundishes
Product Code:
HSSF
Product Applications:
Can be fitted on the hotun SF range of tundishes and used in applications that do not need to maintain an “Air Break to Drain” designation (EG water tank overflows) as the solid shield has no free area to maintain the hotun 100C dry trap tundishes designation of an “Air Break to Drain” and therefore does NOT protect against catagory 5 risk backflow contamination of potable (wholesome) water supplies.
(Can be used in conjunction with hotun detect alarm unit if the cut out is removed)
WARNING – The solid shield must NOT be used on applications that are in fluid connection with a potable (wholesome) water supply EG Unvented Water Heaters
Downloadable images for the hotun detect alarm unit
Activated hotun detect white alarm unit, mounted on hotun hiflo white 15×32 dry trap tundish
Group image
Activated hotun detect black alarm unit, mounted on hotun black 100C 15×22 dry trap tundish
Group image
.