DN8 - DN50
¹/₄" – 2"

1. 从阀体镗孔中拆卸固定器。现在可以从阀门上用手或螺丝刀拆卸止回阀模块。
   注：第一和第二止回阀模块的阀座和弹簧是不可互换的。较重的弹簧和较小直径的阀座属于第一止回阀模块。
   Remove the retainer from the body bore. The check valve modules can now be removed from the valve by hand or with a screwdriver.
   Note: The seats and springs of the first and second check modules are not interchangeable. The heavier spring and smaller diameter seat belong with the first check module.
2. 附在阀笼上的止回阀座配置卡口型锁定装置。用一只手握住阀笼，向内推阀座并顺时针方向旋转阀笼。阀座，弹簧阀笼，弹簧和阀瓣总成现在已成独立的部件。
   注：DN20的M2模块采夹钳分离。
   The check seats are attached to the cage with a bayonet type locking arrangement. Holding the cage in one hand, push the seat inward and rotate clockwise against the cage. The seat, spring cage, spring and disc assembly are now individual components.
   Note: ³/₄" M2 modules snap apart.
3. 阀瓣总成现在可能需要清洗和重新装配，或者，根据具体情况，可能需要报废和从维修组件中取出新的进行更换。O形环应该根据需要进行清洗或更换，并且采用美国食品及药物管理局(FDA)认可的润滑油涂上薄薄的一层。
   The disc assembly may now be cleaned and re-assembled or, depending on its condition, may be discarded and replaced with a new assembly from the repair kit. O-rings should be cleaned or replaced as necessary and lightly greased with the FDA approved grease. Refer to parts price
   list, PL-RP-BPD for more information.
4. 重新组装止回阀模块。止回阀模块安装在阀体内，其阀座面对着阀门进口。在固定器能够重新放置之前，模块必须安全地放置。DN20通径的固定器可能需要稍微倾斜放置进去。更换安全阀总成。
   Re-assemble the check valve modules. Check modules are installed in the valve body with the seat facing the valve inlet. The modules must be securely in place before the retainer can be replaced. On the ³/₄" size retainer may have to be tilted slightly into place. Replace relief valve assembly.

止回阀总成DN25 - DN50
CHECK ASSEMBLY 1" - 2"

　　美国瓦茨保留没有事先通告的情况下更改或改进产品设计、结构、规格或材料的权利，并不因此为美国瓦茨以前或以后销售的产品承担任何责任。
　　Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

更换部件 - DN8 - DN50
Replacement Parts — ¹/₄" – 2"

　　订购时，请指明订购编码，组件编号和阀门通径。
　　When ordering, specify Ordering Code, Kit number and Valve Size.

DN8 - DN25
¹/₄" – 1"

DN32 - DN50
1¹/₄" – 2"