• 要清洗过滤器；先拆卸过滤器塞(2)，然后拆卸和清洗过滤器。
  To clean strainer; remove strainer plug (2), remove and clean strainer.
• 要更换阀座阀瓣，先关闭供应管道，松开螺母(51)，拧下调节螺丝(53)，拆卸弹簧笼(3)、弹簧(52)和垫圈(62)。拆卸底部塞(12)和垫圈(101)。将螺丝刀插入并停留在阀杆顶部的槽内，然后从阀杆(27)底部松开阀座阀瓣支架(47)。
  To replace seat disc; shut off supply, loosen nut (51) and back off adjusting screw (53) remove spring cage (3), spring (52) and washer (62). Remove bottom plug (12) and gasket (101). Insert and hold screw driver in slot on top of stem while loosening seat disc holder (47) from bottom of stem (27).
• 要更换隔膜，先松开锁紧螺母(48)，并拆卸锁紧垫圈(46)，隔膜板(60)和隔膜(20)。
  To replace diaphragm; loosen lock nut (48) and remove lock washer (46), diaphragm plate (60) and diaphragm (20).
• 在重新组装时，将一个低强度螺纹装置锁到阀瓣支架上。
  When reassembling apply a drop of low strength thread lock to disc holder.

调节
Adjustment

　　工厂预置的调节阀压力为50psi。要调节压力设置，先松开锁紧螺母，然后顺时针旋转调节螺栓以增加压力，逆时针旋转以降低压力。
　　注：在下游采用一个压力表，用来调节和核实压力设置。
　　Regulator is factory preset to 50psi. To adjust pressure setting, loosen the lock nut and turn the adjusting bolt clockwise to increase pressure, counter clockwise to decrease pressure.
　　Note: Use a pressure gauge downstream to adjust and verify the pressure setting.

旁路特点*
By-Pass Feature*

　　这种调节阀配置一个内置热膨胀旁路。这种旁路可以防止下游压力升高超过供应压力10psi以上。*如果进口压力超过150psi (10.34 bars)，则旁路将不起作用。
　　This regulator has a built-in thermal expansion by-pass feature. This feature prevents downstream pressure from rising to more than 10psi above the supply pressure. * By-Pass will not work if inlet pressure is above 150psi (10.34 bars).

故障排除
Troubleshooting

高系统压力
High System Pressure

　　如果在无流量情况下，下游系统压力高于设置压力，则原因可能是热膨胀，压力蠕变或阀座上的污垢/碎片。
　　If the downstream system pressure is higher than the set pressure under no flow conditions, the cause could be thermal expansion, pressure creep or dirt/debris on the seat.
　　只有当水在封闭系统内加热时才会发生热膨胀。在供应压力超过150psi，或供应管道上安装一个止回阀或防倒流阀时，系统被关闭。
　　Thermal expansion occurs whenever water is heated in a closed system. The system is closed when supply pressure exceeds 150psi, or a check valve or backflow preventer is
installed in the supply piping.
　　用户必须采取压力释放的措施，以保护用户的管道系统和部件。可能需要采用安全阀，如美国瓦茨530C, BRV, Governor 80, 或3L，或饮用水膨胀罐，如美国瓦茨DET, PLT或DETA等。
　　You must make provisions for pressure relief protection of your plumbing system and components. The use of a relief valve such as the Watts 530C, BRV, Governor 80, or 3L or potable water expansion tank such as the Watts DET, PLT or DETA may be required.

美国瓦茨276H300 Watts 276H300

为了确定是否是热膨胀的原因，请尝试短暂开启冷水龙头。如果压力增加，则说明原因就是热膨胀，此时要立即释放压力，让系统恢复到设置压力上。美国瓦茨提供压力测试表，型号276H300，帮助用户确定是否存在高水压。当把型号276H300附在软管龙头上，并留在系统一段时间，则表上将显示最大压力读数。 　　To determine if this is the result of thermal expansion, try briefly opening the cold water tap. If the increased pressure is caused by thermal expansion, the pressure will immediately be relieved and the system will return to the set pressure. Watts offers a pressure test gauge, model 276H300 to assist you in determining if you have high water pressure. The 276H300 when attached to a hose bibb registers the highest pressure reading over the period of time it is left on the system.

† 橡胶部件
* 可更换
** 不可更换
† Rubber Parts
* Replaceable
** Non-Replaceable

　　有限质量保证：美国瓦茨调节阀公司保证在正常使用状态下，每个产品在材料和工艺方面没有任何缺陷，保质期为从原始运输起壹年。如果在保质期内发现产品有这些缺陷，公司将根据自己的选择，决定免费更换或者维修有缺陷的产品。这将构成有缺陷产品的唯一的排外的补救措施，对于任何因此产生的事故或间接损失，包括由于本产品无法正常运转而产生的无限制，亏损，或维修成本，或更换其它损坏的财产的成本，其它由此产生的人工成本、延迟、破坏、疏忽，由外部物质产生的积垢，由于逆向水条件、化工产品或任何其它瓦茨公司无法控制的情况造成的损害，美国瓦茨公司都不承担任何责任。对于任何产品滥用、错用、误用或不正确安装，将不适用于本保证。本保证替代所有其它明示或暗示的保证，包括任何由于促销性或某种特殊目的的暗示保证。任何通过法律强加的暗示保证有效期均为一年。
　　Limited Warranty: Watts Regulator Company warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge. This shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication or improper installation of the product. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Any implied warranties that are imposed by law are limited in duration to one year.
　　美国一些州不允许限制暗示保证的持续时间，一些州不允许排除或限制所伴随的损害。因此上述保证可能不适用于这些州。这个有限保证授予用户特别的法律权利，用户也可以拥有各州不同的其他权利。用户应该咨询所在州的法律，了解自身的权利。
　　Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights.