dn(mm)50~200050~500公稱壓力pn(mpa)0.61.01.62.54.0試驗壓力強度試驗0.91.52.43.756.0密封試驗0.661.11.762.754.4氣密封試驗0.60.60.60.60.6適用溫度碳鋼:-29℃~425℃ 不銹鋼-40℃~600℃適用介質(zhì)空氣、水、蒸氣、煤氣、油品以及酸、堿、鹽帶有弱腐蝕性介質(zhì)等驅(qū)動形式蝸桿蝸輪傳動、氣傳動、電傳動
零件名稱
材料閥體鑄鐵、不銹鋼、鉻鉬鋼、合金鋼蝶板鑄鋼、合金鋼、不銹鋼、鉻鉬鋼密封圈不銹鋼與耐高溫石棉板組合成多層次閥桿2cr13、1cr13不銹鋼、鉻鉬鋼軸承奧氏體不銹鋼、304氮化填料柔性石墨
三偏心特點及原理
1、偏離管道中心
2、偏離密封面中心
3、傾斜的錐形
當(dāng)閥門開啟時,蝶板與閥座在關(guān)閉時瞬間接觸,利用蝶板偏心1、偏心2迅速脫離閥座,降低了密封副的磨損,磨擦力矩小,開啟靈活。偏心錐面3,使閥門在開啟或關(guān)閉時蝶板能通過閥座內(nèi)孔,實現(xiàn)接觸密封。另外,錐形蝶板的旋轉(zhuǎn)半徑大于密封副接觸位置的旋轉(zhuǎn)半徑,故蝶板在閥門關(guān)閉時將出現(xiàn)越關(guān)越緊,能夠?qū)崿F(xiàn)自鎖,防止蝶板過位。
外形尺寸dd373hdd673h-6/10c.p.r.v系列對夾式多層次金屬硬密封蝶閥dd973h
公稱通徑
長度
標(biāo)準(zhǔn)值外形尺寸
(參考值)連接尺寸
(標(biāo)準(zhǔn)值)重量
(kg)hdd373hdd673hdd973hpn0.6mpapn1.0mpa毫米英寸lh1a1b1h2a2b2h3a3b3d1z-dd1z-d502431123505725302502551104-141254-18126521/2461153705725302502551304-141454-03805725652502551504-181608-384205926002502551704-181808-644605926402502552008-182108-75555270280800355927053003152258-182408-2229200889285025052808-182958-2245250101425925250533512-1835012-22693001215601035450220107030031539512-2240012-2286350045056010704502201512-2246016-22122400053558011030031549516-2251516-26350128053558012506502805016-2256520-263802906502800020-2262020-26260600247066060565681070520-2672520-30380700285055084465681081024-2684024-304508003250550204065681092024-3095024-336509003620359596512503802255785863102024-30105028-33830100040207502080785863112028-30116028-36105012004825477522801000925225012503802640785863-3979870245010009252886156036-36159036-420009253156176040-36182040-48290010302011009803421197044-39202044-48400020008040612503270110098036852-485300
dd373hdd673h-16/25c.p.r.v系列對夾式多層次金屬硬密封蝶閥dd973h
公稱通徑
長度
標(biāo)準(zhǔn)值外形尺寸
(參考值)連接尺寸
(標(biāo)準(zhǔn)值)重量
(kg)hdd373hdd673hdd973hpn1.6mpapn2.5mpa毫米英寸lh1a1b1h2a2b2h3a3b3d1z-dd1z-d502431123505725302502551254-181254-18126521/2461153705725302502551454-181458-03805725652502551608-181608-384205926002502551808-181908-224605926402502552108-182208-26275270280800355927053003152408-222508-26292008892850250529512-2231012-2645250101425925250535512-2637012-30693001215601035450220107030031541012-2643016-3086350045056010704502201016-2649016-33122400053558011030031552516-3055016-36350128053558012506502808520-3060020-363801365