valavu ya gulugufe ya flange iwiri

Kampani ya Henry Pratt ndiyomwe ikutsogolera kupanga mavavu ndi zolumikizira, ali ndi zaka zopitilira 60 popereka ntchito kumakampani opanga magetsi. Pratt adadziwitsidwa zamakampani opanga magetsi kudzera pantchito yokonza yomwe idachitika ku Edison Federal Building ku Chicago. Malowa anali amodzi mwa opanga magetsi a Edison panthawiyo. M'mapaipi amadzi omwe mulibe valavu ndipo mutuwo ndi wawung'ono, valve ikufunika. Henry Pratt Company (Henry Pratt Company) adafunsidwa kuti apange valavu yowonongeka kuti athetse vutoli. Mapangidwe ake ndi valavu ya gulugufe yotanuka, yomwe tsiku lina idzakhala chinthu chachikulu pakampani. Mpaka pakati pa zaka za m'ma 1940, Pratt & Whitney akanatha kupanga ma valve agulugufe osinthasintha pazochitika ndizochitika, koma nkhondo yachiwiri yapadziko lonse itatha, Pratt & Whitney adaganiza zoupanga kukhala mzere wogulitsa mphamvu ndi madzi. Masiku ano, Henry Pratt wakhala mtsogoleri pamisika yamagetsi ndi madzi. Vavu yamadzi a nyukiliya ya 1100 ndi gawo la ASME 2 ndi valavu ya nyukiliya yokhudzana ndi chitetezo cha nyukiliya ya butterfly, kuyambira kukula kwa mainchesi 6 mpaka 36 mainchesi (yachikulu ngati pakufunika). Mapangidwe ake ndi oyenera ANSI 150 # mulingo wapakatikati. Kwa ma valve akuluakulu kuposa 24in ndi 75 psig service grade, amakwaniritsa zofunikira za ASME Sec. Perekani gulu la code III 1678. Zomwe zimapangidwira mndandanda wa 1100 zikuphatikizapo thupi la flange, lomwe limapangidwa ndi zipangizo zomwe zimakumana ndi SA-216, Gr. WCB kapena SA-516, Gr. 70; Chimbale cha valve, chomwe chingapangidwe kapena kuponyedwa, kapena chopangidwa ndi chitsulo cha carbon, pamene carbon steel disc ili ndi zitsulo zosapanga dzimbiri valavu mpando m'mphepete kuphimba m'lifupi lonse la okwera pamwamba; ndi mipando ya valavu ya mphira, yomwe imamangiriridwa kosatha Kapena yokhazikika mwamakina mu thupi la valve popanda kugwiritsa ntchito zomangira za ulusi. Mtsinje wa valavu ukhoza kukhala wachidutswa chimodzi chodutsa mu diski ya valve, kapena ukhoza kupangidwa ndi nthiti ziwiri zomwe zimalowetsedwa mu phula la valavu. Vavu ya nyukiliya ya 1200 ndi ASME Class 2 ndi Class 3 yokhudzana ndi chitetezo cha nyukiliya ya air service ya butterfly, kuyambira kukula kwa 6in mpaka 48in. Mapangidwe apangidwe ndi ofanana ndi mndandanda wa 1100. Mofanana ndi mndandanda wa 1100, mapangidwe a mndandanda wa 1200 amaphatikizapo thupi la flange, chojambula chokhazikika kapena chopangidwa ndi chitsulo chachitsulo chokhala ndi mpando wa mphira wokhazikika komanso wosinthika, ndipo tsinde la valve likhoza kukhala chidutswa chimodzi kapena chimodzi- chidutswa kapangidwe. Shaft yamitundu iwiri. Vavu yamadzi a nyukiliya ya 1400 ndi ASME level 2 ndi level 3 yokhudzana ndi chitetezo cha nyukiliya ya butterfly valve, kuyambira kukula kuchokera mainchesi 3 mpaka 24 mainchesi. Mapangidwe ake amatengera kukakamizidwa kokhazikika kwa ANSI 150#. Zomwe zimapangidwira ndi zida zamapangidwe a mndandanda wa 1400 ndizofanana ndi za mndandanda wa 1100, ndipo ntchito zawo ndizofanana. Vavu ya gulugufe ya Triton XR-70 imakwaniritsa zofunikira za AWWA C504, ndipo kukula kwake kumachokera ku 24 mpaka 144in. Mawonekedwe amtundu wa valve ndi flange x flange end, mechanical joint (MJ) mapeto (24in-48in) ndi flange ndi MJ mapeto (24in, 30in ndi 36in). Zinthu za Triton zikuphatikiza mapangidwe a mpando wa Pratt E-Lok ndi kapangidwe ka tray yozungulira. Mapangidwe a mpando wa valve wa E-Lok amavomerezedwa, ndipo mpando wa valve wa rabara umayikidwa mu thupi la valve kuti utseke mpweya. Poyerekeza ndi mapangidwe ena aliwonse omwe ali pamsika pano, mapangidwe amtundu wa diski amakwaniritsa mphamvu zapamwamba ndi kulemera kopepuka. Ulalo wamakampani www.henrypratt.com