Watts 957Z - Manual (Page 4)

RP/IS-957/957RPDA 1319 EDP# 1915342 © 2013 Watts
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
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 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, 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 PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.
A Watts Water Technologies Company
WARNING: This product contains chemicals known
to the State of California to cause cancer and birth
defects or other reproductive harm.
For more information: www.watts.com/prop65
Symptom Cause Solution
1. Relief valve discharges water while
system is not flowing
a. #1 check is fouled Remove and Clean #1 check
b. Relief valve does not properly close Service relief valve
c. Municipal water pressure is fluctuating Install check valve upstream of backflow as-
sembly
2. Relief valve does not shut off properly a. Fouled relief valve seat Service relief valve
b. Incorrectly Installed diaphragm Remove diaphragn and correctly install
c. Damaged rubber surface on piston Replace with new piston
d. Damaged or plugged pressure hose
Troubleshooting Guide
Series 957, 957RPDA, LF957RPDA
O-ring, Inlet Coupler
Spider Bushing
Spring
Piston Assembly
Screw, Cover
Relief Valve Assembly
Body
Diaphragm
Cover Plate
Assembly
Closure Sleeve Test Cock with O-ring
Closure Sleeve
E-clip
Disc, Elastomer for tight shutoff
Second Check Module
Sleeve O-ring and Gasket
Check Module O-ring
First Check Module
Relief Valve
Service, Replacement Parts and Maintenance
Series 957, 957RPDA, LF957RPDA
For repair kits and parts, refer to our Backflow
Prevention Products Repair Kits & Service Parts
price list PL-RP-BPD found on www.watts.com.