Grooved Piping Systems in HVAC applications
Grooved Piping Systems in HVAC applications
(OP)
I am considering allowing grooved piping systems (Victaulic) on a 240F heating hot water system and a 42F chilled water system. What are positive and negative aspects about using this system in HVAC applications? In my city grooved systems are often used in fire protection systems, but rarely in HVAC.





RE: Grooved Piping Systems in HVAC applications
RE: Grooved Piping Systems in HVAC applications
RE: Grooved Piping Systems in HVAC applications
RE: Grooved Piping Systems in HVAC applications
In 1999 we replaced nearly 2000 gaskets ranging from 10 inch to 2.5 inches. This was done in consultation with Victaulic as to the best method to redo the gaskets. Since then we have had a policy of not exceeding 223 deg F because Victaulic has stated that even a short time of use over 230 deg. F (this is also the tempurature that they will warranty their gaskets to) will cause rapid deterioration of the gaskets. For three years we had no problems but then we started getting leaks in 2003 and as of this year we once again have to either drain the lines or leave them hot at about 120 deg. F to prevent leaks.
In fact we are now looking at welding all the jionts as it is very expensive when we have a leak and it destroys our clients product.
My question is has anyone designed and operated a Hot Water Heating system that operates at 220 deg. F to 230deg. F and if so how long has it operated trouble free.
A couple of quick facts: gaskets are Victaulic recommmended EPDM and only victaulic grease was used & our water treatment is by GE with a compatible product.
RE: Grooved Piping Systems in HVAC applications
RE: Grooved Piping Systems in HVAC applications
I am personally aware of a Victaulic heating/cooling changeover system in a building that issued umbrellas to all occupants. Not my project, and not aware of the final outcome, but inappropriate gaskets and/or poor workmanship were being considered as the leading culprits.
RE: Grooved Piping Systems in HVAC applications
Friar Tuck of Sherwood