Watts TDV - Manual (Page 4)

IS-TDV 0829 EDP# 1910835 © Watts, 2008
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca W a t e r S a f e t y & F l o w C o n t r o l P r o d u c t s
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.
Repacking of Series TDV Valve Under Full
System Pressure
1. Should it be necessary, stem O-ring can be changed under
full system pressure. CAUTION: Safety glasses should be
worn.
2. Record the valve setting.
3. Turn the valve stem counterclockwise until the valve is fully
open and will not turn any further. Torque to a maximum
force of 45 ft./lbs. This will ensure good metal-to-metal con-
tact and minimum leakage.
4. The valve bonnet may now be removed. There may be a
slight leakage, as the metal-to-metal backseating does not
provide a drip-tight seal.
5. Clean exposed portion of valve stem (Do not scratch).
6. Remove and replace the O-ring and gasket.
7. Install the valve bonnet.
8. Tightening valve bonnet is necessary to stop any leaks.
9. Open valve to balance set point as recorded in 8.2.
Maximum Number of Turns Full Open Valve
NOTE: On valve sizes 2 1 ⁄
2
" and 3", full open position of
valve is 5 turns. However valve will open to 5 1 ⁄
2
turns
which is just back of seating of valve.
Seat Replacement
1. Drain system and remove valve from piping.
2. Remove the body bolts from the body using an Allen Key.
3. Remove seat and O-ring. O-ring is not used on valves 8"
and larger.
4. Inspect and clean o-ring cavity and install new O-ring and
seat. Valve disc stem also should be inspected and replaced
if worn. Valve stem O-ring should be replaced at this time.
Refer to Section 8.