Sep 21, 2005 · GeneralAssociate (Mechanical) 22 Aug 05 21:50 Value Engineering was requested by CM/Owner. Commercial Project includes methane mitigation using air …

Apr 4, 2009 · anyone know the lowest "safe" operating temperature of PVC? in a Geothermal application, water handling temperatures can drop to around 30 degrees F. HDPE performs …

Feb 19, 2007 · I am trying to design a Master Manhole (>6'), just upstream from the lift station wet well, that will have an inside drop vs. the drop at the wet well. I would like to have the inside …

Dec 17, 2008 · We have designed a water distribution system to be PVC. The system supplies both domestic and fire service to 20+ warehouses. After the contract award the gov't PM and …

Jul 1, 2010 · I've been comparing corrugated HDPE vs PVC and other than the price, corrugated HDPE seems better in nearly every way, especially in durability with cold weather.

Jan 5, 2017 · Hello everyone, Well this time I have to find some 8-10" butterfly and check valves, made from HDPE. Now, I saw that PVC is the most common type of material and the cheapest …

Feb 23, 2018 · The local pipe sales rep has also confirmed that he most commonly sees glued Schedule 40 PVC but also welded smooth steel pipe being used as buried (through the …

Mar 23, 2006 · instaed of PVC. It has a smooth interior just like PVC, but adds a corrugated exterior for greater strength. It also splits the difference in cost between PVC and concrete and …

May 29, 2007 · Has anyone ever heard the argument made that ASTM D-1785 Schedule 40 PVC pipe is manufactured differently or is more brittle than ASTM D-2241 SDR-21 PVC pipe? I …

May 23, 2007 · I work in the Rocky Mountains in Colorado. Every water district in my area requires the use of DIP for all water mains (generally 8" in size or larger). They will also allow …