Specifications - City of Montpelier, Vermont

Title:15100 – ValvesMontpelier District HeatingCity of Montpelier, VTIssue Date:September 28, 2012Page #:6 of 9rates, flow temperature and air venting as an integral part of the valve body and beof the globe style, wye pattern design.D. Balancing valves to provide 100% positive, leakproof shutoff against the samefluid pressure as the valve body pressure rating.E. Balancing valves to provide preset function with a locking device to preventtampering and allow a return to the original setting after shutoff.F. Balancing valves to have a graduated display for presetting. A drain/fillconnection with integral stop valve to be included.G. Balancing valves in sizes ½" to 2" NPT to be shipped in a container which shallbe used as insulation after valve installation. The insulation to have a "R" valueof 4.5.H. Balancing valve nominal ratings shall be 250 psi at 250°F.I. Provide manufacturer’s preformed insulation covers when valves are installed ininsulated piping systems.Tour & AnderssonArmstrongMEPCOSTAD & STAFCBVT & CBVGMPV seriesPART 3– EXECUTION3.1 EXAMINATIONA. Examine valve interior through the end ports for cleanliness, freedom fromforeign matter, and corrosion. Remove special packing materials, such as blocksused to prevent disc movement during shipping and handling.B. Actuate valve through an open close and close open cycle. Examine functionallysignificant features, such as guides and seats made accessible by such actuation.Following examination, return the valve closure member to the shipping position.C. Examine threads on both the valve and the mating pipe for form (i.e., out of roundor local indentation) and cleanliness.VALVES151006