Watts TK-7 - Manual

Operating and Field Test Procedure
The Watts No. TK-7 Backflow Preventer Test Kit is especially
made to test the individual check modules of the Watts Series 7
residential dual check backflow preventers and can also be used
to test any double check valve backflow preventer, Series 709/
LF709 or 007/LF007. The test kit contains three segments of
durable shatterproof tubing, two brass adaptors used to assem-
ble the three tubing segments, and test hardware to enable
testing of Series 7 check modules and standard double checks.
A rugged simulated leather carrying case is provided for ease of
handling and compactness.
Specifications
• Total working height of tube - 44"
• Adaptors - (2) Brass, for Series 7 modules and double checks
• Tubing - Three segments of plastic tubing
• Moisture resistant instruction panel
• Case - Durable simulated leather - weather proof and mildew
proof
Case
Instruction
Panel
Water Column
Sight Tube
Adaptor for Testing
Series 7 Modules
Adaptor for
Testing Double
Check Valve
NOTICE
Backflow prevention assemblies MUST be installed by a licensed
journeyman tradesperson, who is recognized by the authority
having jurisdiction, and inspected for compliance with local safety
codes. Certified testing and maintenance are required to ensure
proper function and maximum effectiveness of assemblies. These
services must begin upon installation and be provided at intervals
not to exceed one year and as system conditions warrant.
Instructions
No. TK-7
Backflow Preventer Test Kit
No. 7 Check Modules
Complete valve cannot be tested in the
line, however, each check module Part No.
SA7B16 can be tested individually as follows:
Module Test Procedure
Purpose: To test check valves for tightness
in the direction of flow.
Using Watts TK-7 test kit proceed as follows:
1. Remove first check module from valve
body and insert complete with O-ring in
plug module adaptor. Seat firmly with mov-
ing portion of check module facing up.
2. Assemble module adaptor hand tight to
bottom half.
3. Assemble 3 piece water column sight tube
in numerical sequence and attach to top
half of body module adaptor.
4. Holding in vertical position, fill sight tube
with water (no water leakage can be per-
mitted at sight tube joints).
5. Observe liquid level. Liquid level may
drop but as minimum water column of 28
inches (1.0psi) (6.9 kPa) or greater should
be maintained when the check module is
operating correctly. If water column falls
below 28 inches, check module is fouled
and should be replaced (See assembly
instructions).
6. Remove first check module from module
adaptor, and repeat above procedure with
second check module.
Adaptor for Testing
No. 7 Modules
Body Module
Adaptor
O-ring
1st or 2nd
Check Module
O-ring
Plug Module
Adaptor
Double Check
Adaptor
Threaded for
Connection to
Test Cocks
EZ-TC Adaptor
Adaptor for Testing
Double Check Valves
Field Testing Procedure
IS-TK-7
WARNING !
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information
can result in death, serious personal injury, property
damage, or damage to the equipment.
Keep this Manual for future reference.