Watts TK-7 - Manual (Page 2)

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Double Check
Backflow Preventer
Series 709 or 007
(1”007 shown)
Sight Tube
EZ-TC Adaptor
EZ-TC Test Cock 3
Ball Valve 1
Ball Valve 2
EZ-TC
Test Cock 1
EZ-TC
Test Cock 2
EZ-TC
Test Cock 4
Test of Check Valve No. 1
Purpose: To test valve No. 1 for tightness against reverse flow.
Requirement: Valve must be tight against reverse flow.
1. Bleed test cocks No. 2, 3 and 4 to remove any trapped air.
2. Install sight tube in test cock 3.
A. Open test cock 3 and allow water to fill the tube to the top.
Use a tube length of at least 42 inches. This will provide
a head of 1.5psi. Close test cock 3. When using EZ-TC
test cocks to perform this test, close No. 1 and 2 shutoffs,
install adaptor fitting in test cock 3 and install sight tube in
adaptor. Slightly open shutoff valve No. 1 and allow water
to fill the tube to the top then close No. 1 shutoff.
3. Close shutoff No. 2
4. Close shutoff No. 1
5. Open test cock 2.
Installing EZ-TC adaptor opens test cock 2.
6. Open test cock 3. EZ-TC on test cock 3 would already be
open. The water should maintain its position in the sight tube.
A. If it slowly drops and simultaneously runs out through test
cock 2, the check valve No. 1 is leaking and must be ser-
viced.
B. If it slowly drops and does not run out through Test Cock
No. 2, then No. 2 ball valve has a small leak, but No. 1
check valve is tight.
C. If it does not drop but there is a small leakage at test cock
No. 2, then No. 1 ball valve has a small leak, but No. 1
check valve is tight.
Test of Check Valve No. 2
Purpose: To test check valve No. 2 for tightness against reverse
flow.
Requirement: Valve must be tight against reverse flow.
1. Install sight tube in test cock 4 and fill with water as before.
When using EZ-TC, close No. 1 and 2 shutoffs and install sight
tube using adaptor fitting. Fill tube as in step 2 above.
2. Open test cock 3. Installing EZ-TC adaptor fitting opens test
cock 3.
3. Open test cock 4. EZ-TC on test cock 4 would already be
open. The water should maintain its position in the sight tube.
A. If it slowly drops and simultaneously runs out through test
cock No. 3, check valve No. 2 is leaking and must be
serviced.
B. If it slowly drops and does not run out through test cock
No. 3, then No. 2 ball valve has a small leak, but No. 2
check valve is tight.
C. If it does not drop, but there is slow leakage at test cock
No. 3, then No. 1 ball valve has a small leak, but No. 2
check valve is tight.
Open
Closed
Dust
Cover
Hose
EZ-TC Test Cock
IS-TK-7 1322 EDP# 1910207 © 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