NOTE: the disc holder should not be removed when servicing only the disc, remove Allen head screws holding the disc retaining plate and replace disc.

注意：如果只是维修阀瓣，就不要拆卸阀瓣固定器，只需拆卸支撑阀瓣固定器板的六角头螺丝和拆卸阀瓣即可。

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The parallel seat gate assembly consists of two interchangeable spring loaded discs, a fully guided disc carrier, and retaining pins.

平行阀座闸阀由两个可互换弹簧负载阀瓣，一个全导向阀瓣托架和扣环销钉构成。

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The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc.

阀由警戒装置、弹簧、阀碟、扣环和阀座组成，可以和许多管件连接，如缩径管接头、排水弯头等。

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