User Guide

F-26496-8 © Copyright 2013 Schneider Electric All Rights Reserved. 3
* Water capacity in gallons per minute (GPM).
Table-2 Flow Coefficients & Maximum Close-Off Pressure Differential
Valve
Size
Connection Type 2-way Cv (kv) 3-way Cv (kv)
(G)* Close-Off ΔP
PSI (kPa)
(H)† PSI Close-Off ΔP
(kPa)
1/2" NPT, SW, Rp, SAE
1.0 (0.9) 1.5 (30) 60 (414) 75 (517)
3/4" IFL
1/2" NPT, SW, Rp, SAE
2.5 (2.2) 3.0 (2.6) 40 (276) 50 (344)
3/4" NPT, SW, IFL, Rp
1/2" NPT, SW, SAE, Rp
3.5 (3.0) 4.0 (3.4) 25 (172) 30 (208)3/4" NPT, SW, IFL, Rp
1" SW
3/4" NPT, SW, Rp
5.0 (4.3) 5.0 (4.3) 20 (137) 25 (172)
1" SW
3/4" NPT, SW, Rp 7.5 (6.5) 7.5 (6.5) 17 (117) 20 (137)
1" NPT, SW, Rp
8.0 (6.9) 8.0 (6.9) 17 (117) 20 (137)
1-1/4" SW
Valve Body Legend
NPT — Threaded (female)
SW — Sweat
IFL — Inverted Flare
SAE — Society Automotive Engineers Flare (male)
Rp — "Metric" Threaded (female)
* G = General close off actuator
† H = High close off actuator
Table-3 Water Valve Sizing Table*
ΔP 1.0 Cv 1.5 Cv 2.5 Cv 3.0 Cv 3.5 Cv 4.0 Cv 5.0 Cv 7.5 Cv 8.0 Cv
Differential
Pressure, ΔP
1 PSI 1.0 1.5 2.5 3.0 3.5 4.0 5.0 7.5 8.0
2 PSI 1.4 2.1 3.5 4.2 4.9 5.7 7.1 10.6 11.3
3 PSI 1.7 2.6 4.3 5.2 6.1 6.9 8.7 13.0 13.9
4 PSI 2.0 3.0 5.0 6.0 7.0 8.0 10.0 15.0 16.0
5 PSI 2.2 3.4 5.6 6.7 7.8 8.9 11.2 16.8 17.9