FEBCO TK-1 Backflow Preventer Test Kit - Manual (Page 4)

M A I N T E N A N C E M A N U A L
Test Procedure for Double
Check Valve Assembly
A. Before starting test, all needle valves and bleed valves on test kit must
be closed.
B. Flush test cocks before test.
NOTE: Supply pressure gauge reading will decrease when performing this
test procedure.
Test No. 1 - Check Valve No. 1
NOTE: Close all needle valve "A", "B" and "C" and bleed valve "A" and "B" on
test kit.
Step 1
Insure shutoff No. 1 is open, shutoff No. 2 is closed.
Step 2 Install high side hose between connection "A" high side and test
cock No. 3, low side hose between "B" low side and test cock
No. 2 and open both test cock No. 2 and 3.
Step 3 Open bleed valve "A" to bleed air from the high side. Close
"A" then open bleed valve "B" to bleed low side. Close "B".
Step 4 Connect bypass hose between connection "C" bypass and
loosely to test cock No. 1. Open needle valves "A" high side and
"C" bypass to vent air from bypass hose. Tighten bypass hose at
test cock No. 1, open test cock No. 1.
Step 5 Close shutoff No. 1. Slowly open bleed "B" until differential
gauge rises to 2psi and close. If the differential reading does
not decrease, record check valve as "tight".
Step 6 Close all test cocks and open bleed valves "A" and "B". Then
close needle valves "A", "B" and "C" and bleed valves "A" and "B".
Remove hoses from test cocks.
Test No. 2 - Check Valve No. 2
Step 7 Move the high side hose to test cock No. 4, low side hose to
test cock No. 3 and open both test cock No. 3 and 4. Remove
bypass hose from test cock No. 1, open shutoff valve No. 1.
Step 8 Open bleed valve "A" to bleed air from the high side. Close
bleed "A" then open bleed "B" to bleed low side. Close bleed "B".
Step 9 Connect bypass hose loosely to test cock No. 1. Open needle
valves "A" high side and "C" bypass to vent air from the bypass hose.
Tighten bypass hose at test cock No. 1, open test cock No. 1.
Step 10 Close shutoff No. 1, then slowly open bleed "B" until differential
gauge rises to 2 PSI and close. If the differential reading does
not decrease, record check as tight. Close all test cocks and
remove hoses. Open bleed valves "A" and "B". Restore valve to
original working condition.
NOTE: The assembly will fail both the first and second check
valve tests above, if shutoff No. 2 leaks excessively. To test for
a leaky No. 2 shutoff, use the following procedure.
Test for Leaky No. 2 Shutoff
Step 11 Connect the high side hose to test cock No. 1, low side hose
to test cock No. 4. Open test cocks No. 1 and 4. Close shutoffs
No. 1 and 2.
Step 12 Close needle valve "C" bypass. Open needle valve "A" high side,
then open needle valve "B" low side one turn, loosen hose at
test cock No. 4 to remove air. Retighten hose.
Step 13 If the differential gauge rises above 0 there is excessive leakage
at shutoff No. 2 and it must be replaced to test the assembly.
Bleed Valve A
Bleed Valve B
High
(red)
Bypass
(yellow)
Low
(blue)
850 Shown
A Division of Watts Water Technologies, Inc. USA: 4381 N. Brawley • Ste. 102 • Fresno, CA • 93722 • Tel. (559) 441-5300 • Fax: (559) 441-5301 • www.FEBCOonline.com
Canada: 5435 North Service Rd. • Burlington, ONT. • L7L 5H7 • Tel. (905) 332-4090 • Fax: (905) 332-7068 • www.FEBCOonline.ca
IS-F-TK-1 0845 EDP# 1915970 © FEBCO, 2008
Limited Warranty: FEBCO 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.