止回阀按结构可分为升降式止回阀、旋启式止回阀和蝶式止回阀三种。升降式止回阀又可分为立式和卧式两种；旋启式止回阀分为单瓣式、双瓣式和多瓣式三种；蝶式止回阀为直通式。以上几种止回阀在连接形式上可分为螺纹连接、法兰连接、对夹式和焊接等。

　　止回阀的安装应注意以下事顶：

1、在管线中不要使止回阀承受重量，大型止回阀应独立支撑，使之不受管道系统产生的压力影响。

2、安装时注意介质流动的方向应与阀体所标箭头方向一致。

3、升降式垂直瓣止回阀应安装在垂直管道上。

4、升降式水平瓣止回阀应安装在水平管道上。

天津卡特斯流体控制设备有限公司（卡特斯阀门）产品有：

对夹式消声止回阀H71X-16Q,H71T-16Q,H71X-10T,H71T-10T
丝口升降式止回阀H11T-10,H11T-16,H11T-25
丝口旋启式止回阀H14T-10,H14T-16,H14T-25
法兰降式止止回阀H41T-10,H41T-16,H41T-25
法兰旋启式止回阀H44T-10,H44T-16,H44T-25
丝口铸钢升降式止回阀H11H-10C,H11H-16C,H11H-25C
丝口铸钢旋启式止回阀H14H-10C,H14H-16C,H14H-25C
丝口碳钢升降式止回阀H11W-10C,H11W-16C,H11W-25C,H11W-40C,H11W-64C,H11W-100C
丝口碳钢旋启式止回阀H14W-10C,H14W-16C,H14W-25C,H14W-40C,H14W-64C,H14W-100C
法兰铸钢降式止止回阀H41H-10C,H41H-16C,H41H-25C,H41H-40C,H41H-64C,H41H-100C
法兰铸钢旋启式止回阀H44H-10C,H44H-16C,H44H-25C,H44H-40C,H44H-64C,H44H-100C
法兰铸钢止回阀H42H-10C,H42H-16C,H42H-25C,H42H-40C
丝口碳钢升降式止回阀H41W-10C,H41W-16C,H41W-25C,H41W-40C,H41W-64C,H41W-100C
丝口碳钢旋启式止回阀H44W-10C,H44W-16C,H44W-25C,H44W-40C,H44W-64C,H44W-100C
丝口不锈钢升降式止回阀H11W-10P,H11W-16P,H11W-25P,H11W-40P,H11W-64P,H11W-100P
丝口不锈钢旋启式止回阀H14W-10P,H14W-16P,H14W-25P,H14W-40P,H14W-64P,H14W-100P
法兰不锈钢升降式止回阀H41W-10P,H41W-16P,H41W-25P,H41W-40P,H41W-64P,H41W-100P
法兰不锈钢旋启式止回阀H44W-10P,H44W-16P,H44W-25P,H44W-40P,H44W-64P,H44W-100P
法兰不锈钢止回阀H42W-16P,H41W-16P
丝口铜升降式止回阀H11W-10T,H11W-16T,H11W-25T,H11H-10T,H11H-16T,H11H-25T
丝口铜旋启式止回阀H14W-10T,H14W-16T,H14W-25T,H14H-10T,H14H-16T,H14H-25T
法兰铜降式止止回阀H11W-10T,H11W-16T,H11W-25T,H11H-10T,H11H-16T,H11H-25T
法兰铜旋启式止回阀H14W-10T,H14W-16T,H14W-25T,H14H-10T,H14H-16T,H14H-25T
不锈钢止回阀H11W-10P,H11W-16P,H11W-25P,H11W-40P
不锈钢止回阀H12W-10P,H12W-16P,H12W-25P,H12W-40P
不锈钢止回阀H13W-10P,H13W-16P,H13W-25P,H13W-40P
不锈钢蝶形止回阀H76W-10P,H76W-16P,H76W-25P,H76W-40P
不锈钢蝶形止回阀H71W-10P,H71W-16P,H71W-25P,H71W-40P
不锈钢蝶形止回阀(卫星型)H71W-10P,H71W-16P,H71W-25P,H71W-40P
不锈钢蝶形止回阀H74W-10P,H74W-16P,H74W-25P,H74W-10P,H74W-40P
不锈钢法兰止回阀H42W-10P,H42W-16P,H42W-25P
不锈钢法兰底阀H42W-6P,H42W-10P,H42W-16P
不锈钢螺纹底阀H12W-6P,H12W-10P,H12W-16P
另有铜蝶形止回阀,空排止回阀H48J,焊接止回阀H64W,JH41截止止回阀,静音止回阀HC42T/X/H-DRVZ,橡胶瓣止回阀HH44X(SFCV),球形止回阀HQ41X,HQ44X-HQ45X,消声止回阀HC41X,对夹式双瓣止回阀H76X/H-H71H-H72H微阻缓闭蝶形止回阀ZHYH46H/W,HH48H/X,HH49H/X,微阻缓闭式止回阀HH44X/H/T,对夹圆片式止回阀H74X/H,节能消声止回阀H41X,直通式止回阀H42H/N,防污隔断阀HS41X
材质:铸铁,铸钢,锻钢(碳钢),不锈钢(201,202,301,304,304l,316,316l),铜,等。