H76X/H76H/H76W碟式止回閥用于純凈管路及工業(yè)、環(huán)保、水處理、高層建筑給排水管路，阻止介質(zhì)逆向流動之用。該止回閥采用對夾式，蝶板為兩個半圓，且采用彈簧強(qiáng)制復(fù)位，密封面可為本體堆焊耐磨材料或襯橡膠，使用范圍廣，密封可靠。主要技術(shù)參數(shù)公稱通徑DN(mm)50~1200公稱壓力PN(MPa)1.01.62.54.0試驗壓力Ps(MPa)強(qiáng)度試驗1.52.43.756.0密封試驗1.11.762.754.4適用介質(zhì)水、蒸汽、油品、污水、酸堿類適用溫度橡膠密封面（X）-20℃~120℃合金鋼密封面（H）主體碳鋼-29℃~425℃不銹鋼主體用于酸類介質(zhì)-29℃~200℃主要零件材料名稱材料閥體鑄鐵、鑄鋼、不銹鋼、鉻鎳鉬鈦鋼閥板鑄鐵、鑄鋼、不銹鋼、鉻鎳鉬鈦鋼閥桿碳鋼、2Cr13、不銹鋼、鉻鎳鉬鈦鋼密封圈橡膠、不銹鋼、合金鋼彈簧60Si2Mn、3Cr13、17-7PH、INCONELH76X-6-10連接尺寸通徑DN50658010012515020025030035040045050060070080090010001200L43466464707689114114127140152152178229241241300360D100120135155185185265320368428482532585685800905100511151325H76H/W-16-25-40連接尺寸通徑DN506580100125150200250300350400450500600LPN1.01.62.5606773738398127146181184198203219222PN4.0606773738398127146181222231///DPN1.0107127142162192218273328378438489539594695PN1.6107127142162192218273328378444495555617734PN2.5107127142168194224284340400458514///PN4.0107127142168194224290352417474546///