Series 757, 757DCDA, LF757DCDA
Series 757N, 757NDCDA, LF757NDCDA
Double Check Valve Assemblies
Double Check Detector Assemblies
Sizes: 2
1
⁄
2
" – 10" (65 – 250mm)
• 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.
For technical assistance, contact your local Watts representative.
757 OSY
ImpOrtant:
Inquire with governing authorities for local
installation 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 system,
all mechanical checks, such as alarm checks and backflow
preventers, should be flow tested and inspected internally in
accordance with NFPA 13 and NFPA 25.
RP/IS-757/757DCDA
tm
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 incidental,
special or consequential damages, including without limitation, lost profits or the cost of repair-
ing 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, 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 appli-
cable 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
PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL
SHIPMENT.
