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Style TDV
Triple Duty Valve
Cast Iron (ASTM A 126 Class B)
125 lb. Flanged
 Printable Version
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| Triple Duty Valve |
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| APPLICATIONS |
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The Keckley Style TDV is a Triple Duty Valve primarily required on the discharge side of a
centrifugal pump in a hydronic heating or cooling system. This valve functions as a shut-off
valve, spring loaded silent check valve, and balancing valve.
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| CONSTRUCTION |
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The Keckley Style TDV Triple Duty Valves are constructed from rugged cast iron castings that are
machined to exacting specifications. These bodies have drilled flanges that are in accordance
with ASME B16.1.
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| OPERATION |
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The Keckley Style TDV has an automatic and silent operation. The disc will open when the line
pressure is approximately ¼ PSI. As the line pressure approaches zero, the spring will close the
disc to prevent flow reversal and water hammer. The flow through the valve can be adjusted from
bubble tight shut-off to full flow by the acme rising stem.
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| FEATURES |
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The center guided soft seal disc ensures that there is no leakage. The rising stem design
includes an adjustable position indicator for accurate disc positioning for throttling service.
This unit comes with a standard gauge taps at both the inlet and outlet sides and a NPT drain
plug.
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| WORKING PRESSURES– NON-SHOCK |
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