Watts 757Na - Manual

Series 757a, 757aDCDA
757Na, 757NaDCDA
Double Check Valve Assemblies
Double Check Detector Assemblies
Sizes: 2 1 ⁄
2
" – 6" (65 – 150mm)
• Installation
• Service
• Repair Kits
• Maintenance
For field testing procedure, send for IS-TK-DL, IS-TK-9A,
IS-TK-99E and IS-TK-99D.
For other repair kits and service parts, send for PL-RP-BPD
and F-RK-DC.
For technical assistance, contact your local Watts representative.
Watts 757a OSY
IMPORTANT: Inquire with governing authorities for local installa-
tion requirements.
NOTE: For Australia and New Zealand: Pipeline strainers
should be installed between the upstream shutoff valve and the
inlet of the backflow preventer.
It's important that this assembly be tested periodically in com-
pliance with local codes, but at least once per year or more as
service conditions warrant. If installed on a fire sprinkler sys-
tem, all mechanical checks, such as alarm checks and back-
flow preventers, should be flow tested and inspected internally
in accordance with NFPA 13 and NFPA 25.
RP/IS-757a/757aDCDA
Limited Warranty: Watts Regulator Co. (the “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.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY
GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER
WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this warranty shall constitute the sole and exclu-
sive remedy for breach of warranty, and the Company shall not be responsible for any inciden-
tal, 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 for-
eign 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, improper installation or improper maintenance or alteration of the product.
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. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE
LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUR-
POSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.