通径：DN10, DN15, DN20和DN25
Sizes: 3/8", 1/2",
3/4", and 1"
功能：保护饮用水供应系统不会由于负供应压力而受到非饮用水回流的污染。
保护：防止反虹吸
Function: To protect the potable water supply
against backflow from a non-potable source due to negative supply pressure
Protection: Against backsiphonage
安装
Installation
要求
Requirements:
- 如果是在工厂台面安装，则安装高度为洁具溢流水位上方1英寸以上的地方；如果是在现场安装，则安装高度为普通管道产品溢流水位上方6英寸的地方。
Install 1" above flood level of fixture if
factory deck mounted
or 6" if general plumbing field application.
- 安装阀盖侧面朝上，并且便于接近进行检测和维修。
Install bonnet side up and allow for accessibility
for testing/service.
- 供应管道通径不要太小，阀门通径不要太大，要符合实际需要。
Do not undersize supply or oversize the valve
in relation to demand.
- 不要安装在可能发生反压力的地方。
Do not install where backpressure can occur.
- 防止冰冻。
Protect from freezing.
- 建议在防回流阀上方安装一个过滤器，以防止止回阀总成产生积垢，以及在再加压期间从阀门处产生的泄漏或溢出。
Installation of a strainer ahead of the backflow
preventer is recommended to prevent fouling of the check assembly and
resultant spillage from the valve during repressurizing.
维修建议
Recommended Service:
- 按照当地主管部门的要求进行定期检测。
Test periodically as required by local jurisdictional
authorities.
- 每五年或根据系统状况更换内部部件。
Replace internal components every five years or
as system conditions dictate.
压力 - 温度
Pressure - Temperature
温度范围：0.6oC - 82oV
最大压力：150 psi
Temperature Range: 33oF - 180oF
Maximum Pressure: 150psi
美国加州提议65警告
CALIFORNIA PROPOSITION 65 WARNING
警告：美国加州已知这种产品包含可能导致癌症和生育障碍或其它有害生育的化学物质。(美国加州法律要求在美国加州境内将此类产品提供给用户时要提出警告。)
WARNING: This product contains chemicals
known to the State of California to cause cancer and birth defects
or other reproductive harm. (California law requires this warning
to be given to customers in the State of California.) |
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DN15，289
专利号5125429
1/2"
289
Patent# 5125429
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.
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