Watts TWS User Manual
Series TWS
Wall Hydrant
Sizes: 3/4" and 1" (20 and 25mm)
Installation Instructions
1. Drill a 17⁄8" diameter hole in the wall and insert the barrel
through the wall.
2. Determine system requirements:
a. If using a vacuum breaker, install the union outlet of the
TWS Hydrant in the vertical up position (see Fig. 1 and Fig. 2).
b. If using a Reduced Pressure Assembly, install the union
outlet of the TWS Hydrant in the vertical up orientation (see
Fig. 1 and Fig. 3).
Watts Regulator suggests the use of the Watts Series
U009AQT for added installation savings.
c. If using a Double Check Assembly in meter box (see Fig. 4
and Fig. 5), install the union outlet in the vertical down position.
3. Secure to the wall, anchoring through the faceplate.
4. Connect the threaded
mestic supply. (see Fig. 1)
5. If the inside connection is to be a sweat (soldered) connection,
turn hydrant key counterclockwise to the full open position.
Wrap hydrant side connection with a wet rag and/or heat sink
before applying heat.
6. Restore water supply, slowly open hydrant and fl ush thoroughly.
7. Connect union outlet to the backfl ow preventer.
3
⁄4" or 1" (20 or 25mm) inlet to the do-
IS-TWS
TWS
Note: TWS does not include Backfl ow Prevention Assembly.
Consult local codes for proper protection.
Note: The Watts TWS is designed for maximum fl ow and
should be operated in the wide open position. The TWS hydrant should not be used as a throttling valve.
Figure 1
O-ring
Seat
Size 3⁄4" and 1" (20 and 25mm)
Nom. Pipe Stem
Model No. Distance
in. mm in. mm in. mm
TWS-8 8.0 200 9.0 229 12.3 312
TWS-10 10.0 255 11.0 279 14.3 363
TWS-12 12.00 305 13.0 330 16.3 414
Plunger Assembly
Length Length
Valve Body
Head Body
Union Nut
Key
Drain Plug,
Blow Down
Typical Installations
Figure 2 Figure 3
TWS with Watts 800 Series
Pressure Vacuum Breaker
TWS with Watts U009AQT Reduced
Pressure Backfl ow Preventer
Water
Supply
To
Water
Sprinklers
Supply
Key
Drain Port
Watts TWS
or
Blow Down
Drain Port
or
Blow Down
Note: PVB’s must be installed a minimum of 12" (305mm) above
the highest point of water in the sprinkler system.
Note: RPZ’s must be installed a minimum 12" (305mm)
above ground level.
Figure 4 Figure 5
TWS with Watts 007QT
Water
Supply
Key
Watts TWS
Double Check Assembly
To Sprinklers
Key
Watts TWS
Drain Port
Front
View of
this
installation
Watts 007QT
Meter Box
To
Sprinklers
Union Inlet
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.
Water Safety & Flow Control Products
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
IS-TWS 0829 EDP# 1910749
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
© Watts, 2008
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