Tech Bulletins Library
DISINFECTING AQUATHERM PIPING SYSTEMS
January 28th, 2013
CHLORINE DIOXIDE AS DISINFECTANT The use of chlorine dioxide as a disinfectant in the drinking water supply has been increasing in some areas over the last few years. This increase in use is due to the fact that chlorine dioxide is low-priced to produce and easy to dose, compared to straight chlorine. In addition, the Read More
INSULATION ALTERNATIVES
December 27th, 2012
TECHNICAL BULLETIN: 201212B-AQTTB Date issued: 27 Dec. 2012 Recently Aquatherm announced that Aquatherm Advanced (Reflectix) was being discontinued. Aquatherm is getting out of the insulation business. In the meantime, it is recognized that an alternative to Aquathem Advanced needs to be provided. While Aquatherm does not promote one brand of insulation over another, the accompanying Read More
INTERNAL ALIGNMENT
November 28th, 2012
Due to gravity and the physics of extrusion, larger pipes tend to be slightly thicker on the bottom than they are on the top. However, the top will always be at least as thick as the production SDR, so there is no concern over pressure and temperature ratings. This difference is not enough to cause Read More
Underground Thermal Expansion in Aquatherm Pipe
November 1st, 2012
201211A – AQTTB Date Issued: 6 December 2012 The need for thermal expansion joints in piping systems arises from the tendency of the pipe to expand or contract due to changes in temperature of the pipe material. This expansion can either be directed to a specific location (i.e. expansion joint) by anchoring the pipe away Read More
AQUATHERM AND PIPE INSULATION
October 25th, 2012
Aquatherm pipe has a high thermal resistance value, giving a level of natural insulation to the pipe. With this high level of thermal resistance many have supposed that Aquatherm pipe can be installed in many instances without thermal insulation. While this may indeed be true in some instances, most of the time and according to Read More
Sand as Insulation
October 25th, 2012
201210C – AQTTB Date Issued: 24 October 2012 ASHRAE 90.1-20222, Table 6.8.3A “Minimum Pipe Insulation Thickness Heating and Hot Water Systems” lists the required insulation conductivity for piping carrying hot water heating and domestic hot water systems. Some of the data from that table have been summarized below: Fluid Temp. (°F) Conductivity Pipe or Tube Read More
Aquatherm and Hanger Spacing
September 14th, 2012
201209A – AQTTB Date Issued: 13 September 2012 New Construction Pipes typically are found in groups of various sizes running side by side. This can ease installation by allowing multiple pipes to rest on a single trapeze pipe support. But every differing pipe size has different support spacing, complicating this approach. Aquatherm has developed a Read More
Water Hammer
August 31st, 2012
201208B – AQTTB Date Issued: 15 August 2012 Many state and local codes require the installation of water hammer arrestors at locations of quick closing valves. This is done to protect metallic pipe from the high-pressure shocks that can occur when these valves are actuated. The pressure surge, and its effect on the pipe, is Read More
Piping Condensation and Aquatherm
August 31st, 2012
201208A – AQTTB Date Issued: 15 August 2012 Condensation on any surface depends on the temperature of the surface, the ambient air temperature and the ambient relative humidity level. The relative humidity level is the amount of moisture or water vapor that is contained in the air at a certain temperature compared to the maximum Read More
Integration of Other Systems or Components with Aquatherm Piping for Pressure Pipe Applications
August 22nd, 2012
201207C – AQTTB Date Issued: 22 August 2012 When integrating Aquatherm piping systems with other systems or components not made of PP-R, RP(RCT)4 (e.g., components not made of PP-R, RP(RCT) like valves, pumps, other piping, check valves, strainers, etc.), care must be taken to ensure the operating parameters for PP-R, RP(RCT) won’t damage the other Read More