對(duì)夾式高壓止回閥 全銅消聲止回閥 不銹鋼對(duì)夾式止回閥 橡膠瓣止回閥 升降式止回閥 襯氟旋啟式止回閥 襯氟升降式止回閥 空排止回閥 *式法蘭止回閥 微阻緩閉止回閥 H44H旋啟式止回閥 H72Y對(duì)夾式高壓止回閥 H41X全銅消聲止回閥 H71H不銹鋼對(duì)夾式止回閥 HC44X橡膠瓣止回閥 H41H升降式止回閥 H44F46襯氟旋啟式止回閥 H41F46襯氟升降式止回閥 H42H不銹鋼立式止回閥 H48Y空排止回閥 H41H，H41W美標(biāo)止回閥 CVKR*式止回閥 HQ41X滑道滾球式止回閥 HH46X微阻緩閉蝶型消聲止回閥 H42X*式止回閥 HQ44X，HQ45X微阻球形止回閥 HH44X微阻緩閉止回閥 HQ41X球形止回閥 HH46X,HH48X微阻緩閉止回閥 H44H/W旋啟式止回閥 H42W立式止回閥 H44F（B）氨用旋啟式止回閥 H40F46襯氟浮球式止回閥 H41F46襯氟止回閥 H48H截止止回多用閥 H61F衛(wèi)生級(jí)對(duì)焊止回閥 H21F衛(wèi)生級(jí)外螺紋止回閥 H44X-10S塑料止回閥 H40F46立式襯氟止回閥 H44F46旋啟式襯氟止回閥 H41F46升降式襯氟止回閥 BH44H旋啟式保溫止回閥 BH41H升降式保溫止回閥 H14W黃銅內(nèi)螺紋止回閥 H12W內(nèi)螺紋立式止回閥 H11W內(nèi)螺紋升降式止回閥 H41H德標(biāo)法蘭止回閥 H76H對(duì)夾雙瓣旋啟式止回閥 H61Y高溫高壓鍛鋼止回閥 H44N燃?xì)庑龁⑹街够亻y H42N燃?xì)饬⑹街够亻y H41N升降式燃?xì)庵够亻y HQ44、HQ45滑道滾球式止回閥 HH48X、HH49X微阻緩閉消聲止回閥 HH46X微阻緩閉蝶式止回閥 H44X橡膠瓣止回閥 HC41X法蘭消聲止回閥 HC42X*式止回閥 CVKR大口徑*止回閥 H63Y、H83Y高壓角式止回閥 H14W內(nèi)螺紋旋啟式止回閥 H62Y高壓對(duì)焊止回閥 H72Y螺栓對(duì)夾式高壓止回閥 H82Y高壓卡箍式止回閥 H42Y法蘭式高壓止回閥 H42B氨用止回閥 PH44H法蘭排渣止回閥 H41H法蘭升降式止回閥 H42H法蘭立式止回閥 H44H法蘭旋啟式止回閥 HC41X節(jié)能梭式止回閥 H41T-16鑄鐵升降式止回閥 H44H美標(biāo)法蘭止回閥 H74H、H74X、H74F對(duì)夾旋啟式止回閥 H71H對(duì)夾升降式止回閥 H76H、H76X對(duì)夾蝶式止回閥 H44H-25止回閥 H44J旋啟式襯膠止回閥 H40J浮球式襯膠止回閥 H41Fs升降式襯氟止回閥 H44Fs旋啟式襯氟止回閥 H42H,H42Y高壓直通止回閥 H82Y卡箍止回閥 H63Y角式微阻止回閥 HG61A對(duì)接焊微阻止回閥 HG41A微阻止回閥 H83H/H83Y卡箍角式止回閥 HC41X防水錘消聲止回閥 HDH47X蝶式緩沖止回閥 HC41X（B型）消聲止回閥 H64Y旋啟式止回閥 H664Y抽汽止回閥 H76X/H76H蝶型止回閥 HC42T（DRVZ型）*式止回閥 HC44X（SFCV）橡膠瓣止回閥 DYH41XY快閉止回閥 H41W不銹鋼升降式止回閥 水封逆止閥 HDQ740液控止回半球閥 glh41h貫流式止回閥 CVWR對(duì)夾式*止回閥 ZSH41Y軸流式止回閥 H76X/H76H/H76W對(duì)夾式蝶型止回閥 H76X/H76H/H76W蝶式止回閥 H44W不銹鋼旋啟式止回閥 HH46X,HH48X,HH49X微阻緩閉蝶式止回閥 H48H空排止回閥 PH44H排渣止回閥 H42H/W立式止回閥 BH41W保溫止回閥 DH41H德標(biāo)止回閥 H42N燃?xì)庵够亻y H44旋啟式止回閥 H44H美標(biāo)止回閥 H42W不銹鋼立式止回閥 HY41W氧氣止回閥 HH49X微阻緩閉蝶式止回閥 BFDZ701液力自動(dòng)閥止回閥