Watts TDV - Manual

IS-TDV
Watts Series TDV
Triple Duty Combination Valves
Sizes: 2" x 2" to 12" x 12" (50 x 50mm to 300 x 300mm)
Installation and Operating Instructions
Straight Pattern TDV Angle Pattern TDV
The Watts Series TDV Combination Valves are designed for installation on the dis-
charge side of centrifugal pumps. The Watts Combination Valve incorporates three
functions in one valve:
• Drip-tight, shutoff valve
• Spring closure design,
Non-slam check valve
• Flow throttling valve
Installation
1. The valve should be mounted to a spool piece on the dis-
charge side of the pump. Spool piece required is based on a
minimum recommended space of 12" for pump sizes 2" x 2"
to 6" x 6" and 24" for pump sizes 8" x 8" to 12" x 12".
2. It is not recommended to mount a valve directly to the pump
as this could cause undesirable noise in the system.
3. Sufficient clearance around the valve should be left for valve
removal or repair.
4. Install valve in the direction of the flow arrows on the valve
body.
5. The valve can be mounted to flanged equipment using Watts
Flange Adapters or industry standard grooved coupling, suit-
able for system pressure and temperatures encountered.
6. The Watts Series TDV valve bodies have anti-rotation lugs
on the inlet and outlet. These lugs, combined with the Watts
Flange Adapters, provide a ridged rotation free installation.
7. The valve body has been designed to handle the weight of
the pump on vertical in-line installations. The body is not
designed to support the piping weight. It is recommended
that the piping be supported by hangers. Pipe supports
should be provided under the valve and strainer bodies.
Vertical In-Line
Base-Mounted Double Suction
Anti-rotation Lugs
Flow Indicator Scale
Bonnet O-ring
Stainless Steel Stem
High Strength Resin Seat
EPDM for 8" and larger
Bronze Disc
Stainless Steel Spring
Flow Measurement Ports
Drain Connections
(on opposite side)
Base-Mounted Single Suction