Catalogue

UV-PRC003-EN 77
Controls
Table 54. Control valve pressure drop (feet)
2- or 3-way
water valves
Gallons per minute
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1/2-in. - 1.9 Cv 2.85 6.42 11.41 17.82 25.67 34.94 – – – – – – – – – – – – –
1/2-in. - 4.7 Cv – – – 2.73 3.93 5.35 6.99 8.84 10.92 13.21 15.72 18.45 21.4 24.56 27.95 – – – –
3/4-in. - 6.6 Cv – – – – – – – 3.51 4.33 5.25 6.24 7.33 8.50 9.75 11.10 12.53 14.04 15.65 17.34
Table 55. Vertical unit ventilator valve offering
2-position
2-way 3-way
1/2-in. 2-way, 1.9 Cv Hydronic - Normally Open - Close off 30 psi 1/2-in. 3-way, 1.9 Cv Hydronic - Close off 28 psi
3/4-in. 2-way, 3.5 Cv Hydronic - Normally Closed - Close off 20 psi 3/4-in. 3-way, 7.0 Cv Hydronic - Close off 10 psi
3/4-in. 2-way, 3.5 Cv Hydronic - Normally Open - Close off 20 psi
1.0-in. 2-way, 8.0 Cv Steam Normally Open - close off 15 psi; 1.0 NPTI
3-wire modulating
2-way 3-way
1/2-in. 2-way, 1.9 Cv Hydronic - Low Cv - heat 1/2-in. 3-way, 1.5 Cv Hydronic - Low Cv - cooling
1/2-in. 2-way, 3.3 Cv Hydronic - Low Cv - cooling 1/2-in. 3-way, 3.8 Cv Hydronic - Med Cv - cool/heat
3/4-in. 2-way, 4.7 Cv Hydronic - Med Cv - cool/heat 3/4-in. 3-way, 6.6 Cv Hydronic - High Cv - cool/heat
1.0-in. 2-way, 6.6 Cv Hydronic - High Cv - cool/heat
1/2-in. 2-way, 1.8 Cv Steam Only 1/2 NPTI
1/2-in. 2-way, 4.6 Cv Steam Only 1/2 NPTI
3/4-in. 2-way, 7.3 Cv Steam Only 3/4 NPTI
2–10 Vdc modulating
2-way 3-way
1/2-in. 2-way, 1.9 Cv Hydronic - Low Cv - heat 1/2-in. 3-way, 1.5 Cv Hydronic - Low Cv - cooling
1/2-in. 2-way, 3.3 Cv Hydronic - Low Cv - cooling 1/2-in. 3-way, 3.8 Cv Hydronic - Med Cv - cool/heat
3/4-in. 2-way, 4.7 Cv Hydronic - Med Cv - cool/heat 3/4-in. 3-way, 6.6 Cv Hydronic - High Cv - cool/heat
1.0-in. 2-way, 6.6 Cv Hydronic - High Cv - cool/heat
Piping Valve Options
UV-PRC003-EN.book Page 77 Tuesday, June 4, 2013 8:59 PM