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American Wheatley's Triple Duty Valve

TDV-N/TSV-N Nickel Plated Valve Catalog Sheet

The unique quarter-turn TDV/TSV design offers backflow protection throughout a wide range of system balancing settings. Upon closing, the plug rotates to block the downstream port of the valve allowing pressure to equalize around clapper so that it closes with little resistance. Final closing is accomplished by the plug camming against the backside of the clapper. The most satisfactory closure is accomplished by turning the plug to a normal tight fit, then bumping the plug lightly.
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Product Details

Features

  • Available in sizes 2 1/2" through 12'
  • Ductile Iron bodies
  • Flanged ends
  • ENP (Electroless Nickel Plated) Plug & 304Stainless Steel Clapper for enhanced performance in corrosive environments
  • Trunnion supported plug
  • Schrader valve metering connections
  • Memory stop which avoids the need for resetting after shut down
  • Plug position indicator and calibrated scale for system balancing and flow regulation
  • Spring loaded clapper allows the valve to be installed horizontally
  • Dual O-ring stem seals
  • Non-lubricated operation
  • Bubble-tight shut-off
  • Painted Exterior

Multi Function Benefits:

  • Flow regulator valve
  • Positive shut-off valve
  • Convenient connections for gauges
  • Compact size reduces space requirements
The unique quarter-turn TDV/TSV design offers backflow protection throughout a wide range of system balancing settings. Upon closing, the plug rotates to block the downstream port of the valve allowing pressure to equalize around clapper so that it closes with little resistance. Final closing is accomplished by the plug camming against the backside of the clapper. The most satisfactory closure is accomplished by turning the plug to a normal tight fit, then bumping the plug lightly.

Wrench Operated Class - 175 lbs. WOG

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For Smaller Sizes See TDV/TSV

*All flange holes tapped size 2 1/2",3",4",6",and 8" valves. 1 Flange dimensions per ANSI standard B16.1, Class 125

All packaging materials, thread protectors, plastic plugs and caps must be removed before installation.

Dimensions are subject to change without notice, please confirm actual dimensions with factory at time of order.

Bill of Materials

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Pressure Loss Curve For Sizing Valve

Installation:

  • Mount 2 1/2" through 12" valves in a vertical up or horizontal position with flow in the direction of the flow arrow which is cast on the side of each valve.
  • Install valve in a location which allows easy access to operating wrench and flow meter connections.
  • Install with the equivalent of at least IO diameters of straight pipe, sized to TDV/TSV valve, upstream of the valve and the equivalent Of at least 5 diameters Of pipe downstream Of the TDV/TSV valve.
  • Once a flow rate has been set, adjust the memory stop located on the stem of the TDV/TSV valve (see memory stop illustration on tag attached to valve for adjustment instructions). The memory stop allows the valve to be closed and re-opened to the same balance position.
 

Flow Meter Operation:

  • Remove caps from the metering connections at the HI and LO pressure taps.
  • Connect the high pressure hose (red) of the pressure gage to the HI pressure connections on the TDV/TSV valve and the low pressure hose (blue) to the LO pressure connection. Note: Hose ends require valve depressors to be connected. If valve depressor is not visible in hose end check opposite end of hose. Metering
  • connection valves are opened automatically as the hose end is screwed on.
  • Prepare the pressure gauge as per instructions in the gauge kit. The flow can be determined by reading the pressure indicated at the gauge, noting the valve opening from the plug position indicator and calibrated plate and transferring this data to a flow chart.
  • When flow readings are complete, follow directions supplied with the pressure gauge.
  • Replace metal caps on the metering connections of the TDWTSV valve.