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General Plumbing and Gasfitting Talk => Plumbing => Ask Plumbers (Public) => Topic started by: Lyn on October 08, 2009, 07:32:57 AM

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Title: 180 DEGREE WATER
Post by: Lyn on October 08, 2009, 07:32:57 AM

Can anyone tell me how far 180 degree waste water, from a dishmachine and steriliziers, needs to travel in cast iron before it cools off enough to change to pvc? Please help.

Title: Re: 180 DEGREE WATER
Post by: Plumber on October 08, 2009, 09:17:33 AM

Hi Lyn

High-temperature trade waste should be cooled in a cooling tank before discharging into a sewer. The tank must be large enough to hold the hot water discharge until cooled below 50 deg C, before it is displaced by incoming water. If enough cold water is available to add to the the incoming hot water, the tank may be smaller. You can get such a tank at any plumbing or drainage merchant such as Hynds. for more info on trade waste pipe size and materials look at http://www.plumbers.co.nz/forum/index.php/topic,26.0.html (http://www.plumbers.co.nz/forum/index.php/topic,26.0.html)

best regards

plumbers.co.nz