西門子[SIEMENS]熱力閥執(zhí)行器STA21、STA21/50、STA71、STA71/50 熱力閥執(zhí)行器STA21、STA21/50、STA71、STA71/50 應(yīng)用于散熱器閥門，小閥門和區(qū)域閥STA21...AC230V工作電壓，2位控制信號STA71...AC/DC24V工作電壓，2位控制信號或PDM（脈寬調(diào)制）驅(qū)動力105N直接與螺母安裝（無需工具）1.2米或5米連接電纜兩線連接位置指示堅固耐用的結(jié)構(gòu)，運行安靜可選防篡改件，以防止拆除 Application： 2-positioncontrolofheatingsystems chilledceilingsandterminalunits ForSiemensradiatorvalvetypesVDN ,VEN andVUN ForSiemensMiniCombiValves(MCV)VPD andVPE ForSiemenssmallvalvesVD1 CLC ForSiemenszonevalvesV I46 andV S46 Forvalves,radiatorvalvesanddistributorsfromothermanufacturers Function： Whenthecontrolsignalisappliedtotheactuator,thetemperatureoftheheatingelementrises,whichcausesthesolidexpansionmediumtoexpand.Thisexpansionisconvertedintoalinearmovement,causingtheactuatorstemtoretract.Thevalveisopenedbytheforceofthespring.Whentheactuatorisde-energized,theactuatorstemisextendedandthevalvecloses.TheSTA21 andSTA71 thermalactuatorshavenorotatingparts.Consequently,theyoperatequietlyandarenotsubjecttowear. Warranty： ThetechnicaldatagivenfortheseapplicationsisvalidonlyforvalvesusedinconjunctionwiththeSiemensandthird-partyactuatorslistedunder Equipmentcombinations .IftheSTA actuatorsareusedwithothervalves,thentheuserisresponsibleforensuringcorrectfunctioningandallclaimsunderSiemensSwitzerlandLtd/HVACProductswarrantyareinvalidated. 注：本產(chǎn)品所標(biāo)價格僅為參考，實際價格、詳細(xì)技術(shù)參數(shù)及安裝方法請來電咨詢。 北京乾圳工程技術(shù)有限公司聯(lián)系人：陳述手 機(jī)：13240011177電 話：010-83706629傳 真：010-83706435網(wǎng) 址：http://www.bjqzgc.com/地 址：北京市豐臺區(qū)四合莊288號波峰商務(wù)樓403室郵 編：100070