Test Procedure
Double Check Valve Assembly
Test Check Valve No. 1
Step 1: Insure shutoff #1 is open, shutoff #2 is closed.
Step 2: Connect high side hose to test cock #3, low side to test
cock #2 and open both test cock #2 and test cock #3.
Step 3: Open valve C, then open A to bleed air from the high side.
Close valve A, then open B to bleed low side. Close valve B.
Step 4: Connect vent hose loosely to test cock #1. Open valve A to
vent air from vent hose. Tighten vent hose at test cock #1,
open test cock #1.
Step 5: Close shutoff #1. Slowly loosen hose at test cock #2 until
differential gauge rises to 2 psi and retighten hose. If the dif-
ferential reading does not decrease, record check valves as
“tight”.
Test Check Valve No. 2
Step 1: Move the high side hose to test cock #4, low side to test
cock #3 and open both test cock #3 and test cock #4.
Remove vent hose from test cock #1, open shutoff #1.
Step 2: Open valve C, then open valve A to bleed air from the high
side. Close valve A, then open valve B to bleed low side.
Close valve B.
Step 3: Connect vent hose loosely to test cock #1. Open valve A to
vent air from the vent hose. Tighten vent hose at test cock
#1, open test cock #1.
Step 4: Close shutoff #1, then slowly loosen hose at test cock #3
until differential gauge rises to 2 psi and retighten hose. If
the differential reading does not decrease, record check as
tight. Remove all hoses and restore valve to original working
condition.
NOTICE
The assembly will fail both the first and second check valve tests
above, if shutoff #2 leaks excessively. To test for a leaky #2 shutoff,
use the following procedure.
Test for Leaky No. 2 Shutoff
Step 1: Connect the high side to test cock #1, low side to test cock
#4. Open test cock #1 and test cock #4. Close shutoffs #1
and #2.
Step 2: Close valve C. Open valve A, then open valve B
1
⁄
2
turn,
loosen hose at test cock #4 to remove air. Retighten hose.
Step 3: If the differential gauge rises above 0, there is excessive
leakage at shutoff #2 and it must be replaced to test the
assembly.
Ball Type
Test Valves
(A)
(C)
(B)
Needle
Valve
High Hose (Color
- Yellow)
Vent Hose
(Color - Blue)
Low Hose
(Color White or Red)
Test Cock
No. 1
Test Cock
No. 2
Test Cock
No. 3
Test Cock
No. 4
Test Cock
No. 3
Test Cock
No. 4
Test Cock
No. 1
Test Cock
No. 2
709NRS Shown
1" 007 shown
IS-TK-9A 1323
EDP# 0834222
© 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
