CONTENTS JULY 2011 PLUMBING COVER STORY


Test Driving Circulators Contractor-turned-wholesaler T.J. Hunt of Danbury, Conn., installs eight Grundfos ALPHA circulator pumps in his home radiant-floor heating system as a working demonstration to prove to contractors the value and worth of variable-speed pump technology in saving energy for hydronic applications.


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A COMPLETE SOLUTION FOR ANY TANKLESS WATER HEATER INSTALLATION


PREMIUM DESIGN


SPACE SAVING


RECESSED BOXES


22 Richard DiToma Expand your business, turn profits


26 Proper pump sizing Considering all the factors in specifying pumps


30 PEX goes underground Grocery store chain saves $$ on new construction


34 Talking about flush valves The flush valve has come a long way in 100 years


38 Q&A with Scott Delany


The VP and CFO of Delany products discusses the company’s transformation from Coyne & Delany


BUSINESS RESOURCES + TOOLS


40 Ellen Rohr Are you keeping track of your jobs?


42 2011 Internet Usage Survey Contractors are getting on board with social media


46 Tool crib HYDRONICS


48 Dan Foley Passive house Part II: The mechanicals


60 No tank = more savings Navien tankless water heaters prove their worth


62 Army goes greener


Ground-source heat pumps in prototypes for Army’s zero-energy home plan


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The service valves of your choice, with the accessories you need.


• High fl ow 24" SS gas connector • Webstone CGA gas ball valve


• Residential Pressure Relief Valve (150 PSI / 200,000 btu)


P A TENTED TE CH NO LOG Y Learn more:


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64 Morris Beschloss PVF market set to rise with steel’s rebound


68 Feelin’ groovy The benefits of grooved mechanical systems


70 Tracking Copper with Mark Perrone Effective buying of copper and steel pipe


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