Aug 23, 2005 · GeneralAssociate (Mechanical) 22 Aug 05 21:50 Value Engineering was requested by CM/Owner. Commercial Project includes methane mitigation using air …

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 …

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 …

Mar 23, 2006 · Here in the mountains of Colorado (many freeze-thaw cycles and expansive and aggressive soils) we have used both PVC and HDPE with success in low cover applications. …

Mar 7, 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 …

Aug 23, 2005 · 3. Flanging HDPE to PVC is annoying, but the adapters are off-the-shelf. 4. What is the facility intended service life? What is the methane system intended service life? 5. What …

Apr 13, 2004 · HDPE that is produced with 2% carbon black will provide an almost unlimited outdoor storage life. HDPE pipe that is not black will have a limited service life in the sun. …

May 29, 2007 · Perhaps they may have Sch 40 PVC solid wall pipe confused with Sch 40 foam core PVC pipe?. Harvel solid wall Schedule 40 PVC pipe has been used for direct burial …

Apr 15, 2009 · Would you spec out 4" pvc domestic supply waterline as schedule 40/80 or would you use a C900 (PC-???) pipe? Is there an advantage at this size to one over the other, …

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 …