TDV TRIPLE DUTY VALVE

OVERVIEW: The Model TDV Triple Duty Valve is three valves in one, replacing a calibrated balance valve, shut-off valve, and silent check valve, for a simplified and inexpensive way to control flow from a pump.  Flow through the valve is adjustable from zero to full by the ACME rising stem. A graduated position indicator on the stem provides an accurate check of the valve’s position for throttling service, and a hand-wheel is provided with all TDV control check valves for ease of operation. The TDV also has a soft-seated, dovetail O-ring groove ensuring a bubble tight seal in the closed position.

Quick closure to reduce water hammer: Silent shut-off is achieved via the fully automatic, spring assisted disc that closes near zero flow velocity when functioning as a check valve.  The soft seat and quick closure helps to prevent flow reversal, slamming, and surges.

Minimal head loss: The valve’s body has a large body with at least a 2 to 1 ratio to connecting pipe. The disc's low cracking pressure reduces the amount of energy required to open the valve.