止回阀—上海一特阀门系列产品：高压止回阀。高温止回阀。高压高温止回阀。进口止回阀、燃气限流阀H145。旋启式止回阀H44H。升降式止回阀H41H。立式止回阀H42H/N。角式止回阀H63Y/H83Y。高压止回阀H42/H62H。高温止回阀H42/62Y。Y型止回阀H65Y。对夹式止回阀H71/72/74/76/78/79。对夹超薄型止回阀H74X/H。消声止回阀HC41X。静音止回阀HC42T/X/H(DRVZ)。橡胶瓣止回阀HH44X(SFCV)。蝶式止回阀。微阻缓闭止回阀HH44X/HH46H/W,HH48H/X,HH49H/X。球形止回阀HQ41/HQ44/HQ45X。天燃气止回阀H41/42N。法兰止回阀。内螺纹止回阀H11W。保温止回阀BH44H、BH41H。自密封止回阀H42Y/H62Y。截止止回多功能阀H48H。衬胶止回阀H44J/H41J/H40J、衬氟止回阀H41F/H44F/H42F/H40F。塑料止回阀H41F/H44F/H61F-6S。日标止回阀、德标止回阀、美标止回阀H44W。支耳式止回阀。铸铁止回阀、铸钢止回阀、锻钢止回阀、铬钼钢止回阀、不锈钢止回阀。底阀H42H、水上底阀。拍门。阀体的材质有: 铸铁、铸钢、不锈钢、锻钢、铬钼钢、铬钼钒钢。最高工作压力1.6-32MPA(美标从150LB-2500LB，日标从10K-64K)。工作温度-20°C- 550°C，阀门口径从DN15-DN600。连接方式:法兰、丝口或焊接。适用介质:水、油品、气、蒸汽等。