Solar Water Heater T/P Valve

Solar Water Heater T/P Valve Products Detail T/Pvalve 1,CEcertificate 2,Function:reliefpressure 3,Use:Pressurizedwaterheater 4,Pressurerange:99degree/7bar T/PValve 1,Commodityname:TemperatureandPressureReliefValve 2,Use:P/TValveforsolarwaterheater,electricheaterandsoon 3,T&PreliefValveFunction: TheT&Pvalveisdesignedtorelievetheincreaseinpressurewhichdevelopsduringthenormalheatingcycle. Thisiscausedbythewaterexpandingduringtheheatingcycle.TheT/Pvalvethenwillrelievetheincreaseinpressurebyreleasingdripsofhotwatertothedrainline.Itisrecommendedthatanexpansioncontrolvalvebefittedtothecoldwatersupplylineasitwillrelievecoldwater(nothotwater),duringtheheatingcycleexpansion,therebysavingenergyandincreasingthelifeoftheT&Preliefvalve.Localregulationsmaymakeitmandatorytoinstallanexpansioncontrolvalveinthecoldwatersupplyline. Shouldtheelectricaltemperaturecut-outdevicesceasetooperatecorrectly,thewaterwilloverheatandthetemperatureprobewillthenbeactivatedtoopentheP/Tvalve,discharginghotwater. 4,T/Preliefvalveforsolarwaterheater Inletpressurecontrol: Highpressuremaycauseexcessivedischargeandpossibleprematurefailureoftheoperatingreliefvalve.Themaximumwaterpressureusuallyoccursduringthenight,atthetimeoflowestwaterusage.Inanymainspressurewaterheaterinstallation,iftheinletwaterpressureexceeds80%ofthenominalsetpressureoftheoperationreliefvalve,apressurelimitingvalvemustbefittedtothecoldinlet.(IfacoldwaterexpansioncontrolvalveisfitteditwillhavealowersetpressurethantheT/Preliefvalveandthusbeclassedasthe"operating"reliefvalve.) 5,T&PValveInstallation: T/PValvesshouldbeinstalledbyalicensedplumber. Ifthetemperatureprobeprotrudingfrominsidetheinletthreadisdamagedorbent,donotinstall,andobtainareplacementvalve. Cleanoutalldepositsfromthethreadedbossontheheaterbeforefittingareplacementvalve,otherwisethenewvalveriskscontaminationandprematurefailure.ApplyPTFEthreadtapetothemaletaperthread,makingsurethatthetapedoesnothangovertheouterendofthethread,asthiscanleadtoprematurevalvefailure.Screwthevalveintotheheatersocket.Donotuseawrenchonthevalvebody.Usetehhexagonalspannerflatsprovided.Novalves,taps,orotherisolatingdevicesaretobefittedbetweentheP&Treliefvalveandthewaterheater. Installadrainlineofthesamenominalsizeasthevalve,inaccordancewithAS3500.4.(Thedrainlinemusthaveacontinuousfall.) MODEL SIZE INSTALLATION INLET OUTLET HOTWATERTAKE-OFF PTV-15D DN15 COPING R1/2" Rc1/2" ---- PTV-20D DN20 COPING R3/4" Rc3/4" ----