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.
MODEL |
SIZE
(in)
|
CLASS | Cv |
PRES
(psi)
|
WT
(lbs)
|
A
(in)
|
B
(in)
|
C
(in)
|
D
(in)
|
E
(in)
|
ITEM NO |
---|---|---|---|---|---|---|---|---|---|---|---|
VTDV | 2 | 125 | 82 | 200 @ 150 F | 33 | 8.39 | 6.0 | 12.0 | 1/2 | 1/4 | VTDV-IT0200 |
VTDV | 2 1/2 | 125 | 128 | 200 @ 150 F | 42 | 9.84 | 7 | 12.5 | 3/4 | 1/4 | VTDV-IT0250 |
VTDV | 3 | 125 | 188 | 200 @ 150 F | 59 | 10.05 | 7.5 | 14 | 1/2 | 1/4 | VTDV-IT0300 |
VTDV | 4 | 125 | 334 | 200 @ 150 F | 104 | 14.5 | 9 | 15.5 | 1/2 | 1/4 | VTDV-IT0400 |
VTDV | 5 | 125 | 528 | 200 @ 150 F | 170 | 16 | 10 | 19.5 | 1/2 | 1/4 | VTDV-IT0500 |
VTDV | 6 | 125 | 765 | 200 @ 150 F | 202 | 18 | 11 | 21.5 | 3/4 | 1/4 | VTDV-IT0600 |
VTDV | 8 | 125 | 1371 | 200 @ 150 F | 280 | 21.5 | 13.5 | 26 | 3/4 | 1/4 | VTDV-IT0800 |
VTDV | 10 | 125 | 2153 | 200 @ 150 F | 442 | 25.5 | 16 | 27 | 1 | 1/4 | VTDV-IT1000 |
VTDV | 12 | 125 | 3105 | 200 @ 150 F | 816 | 30.12 | 19 | 32 | 1 | 1/4 | VTDV-IT1200 |
VTDV | 14 | 125 | C/F | 200 @ 150 F | 1112 | 30.39 | 21 | C/F | 3/4 | 1/4 | VTDV-IT1400 |
VTDV | 16 | 125 | C/F | 200 @ 150 F | 1478 | 33.78 | 23.5 | C/F | 1 | 1/4 | VTDV-IT1600 |
VTDV | 20 | 125 | C/F | 200 @ 150 F | C/F | C/F | C/F | C/F | C/F | C/F | VTDV-IT2000 |