Owner manual
For Balancing and Flow Measurement Applications
ES-TDV
Job Name
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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.
Series TDV
Triple Duty Valves
Sizes: 2
1
⁄2" – 12" (65 – 300mm)
Series TDV Triple Duty Valves are designed for use on single, double,
and vertical in-line pump applications. The TDV combines the func-
tions of a positive hand-tight shutoff valve, check valve, and flow con-
trol valve into one versatile package, and eliminates the need to utilize
three separate valves on the pump system. By using the series TDV,
fewer components and fewer connections are required. Therefore,
installation time is reduced, less space is needed, and the potential
for leaks is reduced: adding up to significant cost savings.
The field-convertible design allows the TDV to be changed from
the factory-standard, straight pattern to an optional angle pat-
tern by using standard tools, and no additional parts. This allows
the TDV to be used as a replacement for angles and elbows,
and generates even greater savings on space and connections.
The TDV is designed for easy field serviceability with bonnet O-rings
that can be replaced under pressure by backseating the valve, and
seats that can be changed without the use of special tools.
Features
• Reduced field installation and material cost
• Eliminates requirement of three valves on pump discharge
• Soft seat to ensure tight shutoff
• Spring closure design, non-slam silent check valve feature
•Valve Cv designed to ASHRAE flow recommendations for
quiet system operation
•Grooved end connections with optional flange adaptors
Specifications
A Triple Duty Valve shall be installed on the discharge side of each
pump as indicated on the plans. The valve body shall be ductile iron
with grooved ends and anti-rotation lugs on the inlet and outlet of
the body. The valve shall have two
1
⁄4" (6mm) NPT connections on
each side of the valve seat. Two connections to have brass pressure
metering ports with check valve and gasketted caps. Two other con-
nections to be supplied with brass drain plugs. Metering ports are to
be inter-changeable with brass drain plugs. The valve disc shall be
bronze plug type with engineered resin seat 2
1
/2" – 6" and EPDM
for 8" – 12". Valve stem shall be stainless steel with wrench flats.
Flange adaptors, where necessary, shall be class 125 ductile iron
flanges with anti-rotation lugs and EPDM gaskets. Valve shall be a
Watts Regulator Company Series TDV.
Materials of Construction
Body Ductile Iron ASTM A536 GR65-45-12
Disc Bronze ASTM B584 C-84400
Seat 2
1
⁄2" – 6" Engineered Resin,
8" – 12" EPDM
Stem Stainless Steel ASTM S582 Type 416
Spring Stainless Steel ASTM S302
O-rings Buna-N
Metering Ports Brass NPT Brass Body with Cap
Drain Tappings (2)
1
/4
" with Brass plug
Optional equipment
Flange Adapters Ductile iron ASTM S536 GR 65045-12
Flange Gaskets EPDM
Insulation Fiberglass
TDV
Angle Pattern
Straight Pattern
Flange Adapter Details
VALVE SIZE 125psi/150psi DUCTILE IRON
Bolt Bolt Diameter
No. Size
in. mm in. mm in. mm
2
1
⁄
2
64 4
5
⁄
8 16 5
1
⁄
2 140
3764
5
⁄
8 16 6 152
4 102 8
5
⁄
8 16 7
1
⁄
2 191
5 127 8
3
⁄
4 19 8
1
⁄
2 216
6 152 8
3
⁄
4 19 9
1
⁄
2 214