User guide

For Irrigation System Applications
ES-TWS
Job Name
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Contractor
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Job Location
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Approval
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Engineer
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Contractor’s P.O. No.
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Approval
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Representative
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Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Sizes:
3
⁄4" - 1" (20 – 25mm)
Series TWS Key Operated Wall Hydrants have been
specifically designed to provide outside access to a building
water supply for start-up, winterizing, and servicing of irrigation
sprinkler systems. The TWS is located outside of the home
reducing the time spent on service calls. There is no need
to locate the inside shutoff valve or the drain connection.
Deploying the TWS wall hydrant enables the irrigation
contractor to winterize an irrigation system at anytime thereby
protecting the contractors’ warranty and the homeowners’
investment.
When used in conjunction with the Watts Series 800 Pressure
Vacuum Breaker or either a Series 009 or 909 Reduced
Pressure Zone Backflow Preventer, the installing
contractor provides affordable freeze protection for both the
irrigation system and the backflow preventer.
Features
• Eliminates delays and multiple visits to gain
interior access to irrigation equipment
• Standardizes location of supply shutoff valve
and drain connection
• Access available anytime for winterizing
• Durable bronze valve body and shaft
• One piece valve plunger
• Tamper resistant key operated hydrant
• Exterior chrome finish
• Resilient seated shutoff
• Union connection for ease of installation
of backflow preventer
• Manual drain port
Specifications
A drainable freezeless wall hydrant shall be installed outside as
shown, to provide a means of shutting off the flow of water to
the irrigation system for winterizing the system and the back-
flow preventer. The valve body and shaft shall be of copper or
brass construction with a one piece valve plunger to control
both flow and drain functions. The hydrant shall be designed
to include a drain plug for winterization of the irrigation system
and backflow preventer. The hydrant shall be tamper resistant
and shall be key operated. The hydrant shall be
3
⁄4" or 1"
(20 or 25mm) size and of the proper length for the installation
and shall be a Watts Regulator Company Series TWS.
Series TWS
Key Operated Wall Hydrants
for irrigation system winterization
3
⁄4" and 1"
(20 and 25mm)
O-ring
Seat
Plunger Assembly
Valve Body
Head Body
Union Nut
Key
Drain Plug,
Blow Down
DISTANCE PIPE STEM
MODEL (DM) LENGTH LENGTH
in. mm in. mm in. mm
TWS-8 8 200 9 229 12
5
⁄16 313
TWS-10 10 250 11 279 14
5
⁄16 364
TWS-12 12 300 13 330 16
5
⁄16 389
3
⁄4"-1" (20 - 25mm)