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HH49X/HH48X/HH47X微阻缓闭蝶型消声止回阀
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HQ45X-10Q/C微阻球形止回阀 大流量
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HQ41X无磨损球形止回阀，滑滚球式止回阀
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HC44X-16Q/C橡胶瓣止回阀 软密封止回阀
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HH44X-16Q/C微阻缓闭止回阀
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H41H-16/100C铸钢法兰升隆式止回阀
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H44H-16/25/64/100铸钢旋启式止回阀
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H44W-16/64P/R不锈钢法兰旋启式止回阀
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H41W-16/100P不锈钢法兰升降式止回阀
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H76H/H77H对夹蝶式止回阀(双瓣止回阀)
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H71H-16T全铜对夹升降式止回阀
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H41X-16P不锈钢消声止回阀
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H71X/H-16P不锈钢对夹升降式止回阀
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H74X/H-16P对夹薄型止回阀
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H41X/W全铜消声止回阀
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H42T型（DRVZ）静音止回阀
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H41W不锈钢升降式止回阀
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H12W-16T黄铜丝口止回阀
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H12W-16P/R不锈钢内螺纹止回阀
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H42W-2.5铸钢底阀，不锈钢法兰底阀
