snippet: TF21-CI 12" Cast Iron 125# Flanged End Tri-Flow Valve Ductile Iron Disc, EPDM O-Ring, Hand Wheel Features: <ul><li>Economical and convenient design.Titan’s Tri-flow Control Check 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 Tri-flow control check valves for ease of operation. The Tri-Flow also has a soft-seated, dovetail O-ring groove ensuring a bubble tight seal in the closed position. </li> <li>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. </li> <li>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. </li> </ul>

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