Valves
Humidistats 
and 
Thermostats Controllers Sensors Relays Switches Actuators Valves Accessories
Engineering 
Guide
Cross 
Reference
70-6925 97
Product Number
End Connection Size
Body Pattern Valve Action
Capacity Close-off 
Ratings at 
Branchline 
Pressure
Spring Range
(inch) (mm) (Cv) (Kv) (psi) (kPa)
VP513A1048 O.D.: 7/8 in.; 
Nominal: 3/4 in.
O.D.: 22.2 mm; 
Nominal: 19.1 mm
Two-way, 
Straight-
through
Proportional 
Normally Open
2.5 Cv 2.16 Kv 79 psid (545 kPa) 
at 13 psi (90 kPa)
3 psi to 
10 psi
21 kPa to 
69 kPa
VP513A1055 O.D.: 7/8 in.; 
Nominal: 3/4 in.
O.D.: 22.2 mm; 
Nominal: 19.1 mm
Two-way, 
Straight-
through
Proportional 
Normally Open
4 Cv 3.46 Kv 79 psid (545 kPa) 
at 13 psi (90 kPa)
3 psi to 
10 psi
21 kPa to 
69 kPa
VP513A1188 O.D.: 5/8 in.; 
Nominal: 1/2 in.
O.D.: 15.9 mm; 
Nominal: 12.7 mm
Two-way, 
Straight-
through
Proportional 
Normally Open
2.5 Cv 2.16 Kv 79 psid (545 kPa) 
at 13 psi (90 kPa)
3 psi to 
7 psi
21 kPa to 
48 kPa
VP513A1204 O.D.: 5/8 in.; 
Nominal: 1/2 in.
O.D.: 15.9 mm; 
Nominal: 12.7 mm
Two-way, 
Straight-
through
Proportional 
Normally Open
2.5 Cv 2.16 Kv 79 psid (545 kPa) 
at 13 psi (90 kPa)
3 psi to 
10 psi
21 kPa to 
69 kPa
VP513B1012 O.D.: 5/8 in.; 
Nominal: 1/2 in.
O.D.: 15.9 mm; 
Nominal: 12.7 mm
Two-way, 
Straight-
through, Offset
Proportional 
Normally Closed
1.0 Cv 0.86 Kv 50 psid (345 kPa) 
at 7 psi (48 kPa)
9 psi to 
13 psi
62 kPa to 
90 kPa
VP513B1038 O.D.: 5/8 in.; 
Nominal: 1/2 in.
O.D.: 15.9 mm; 
Nominal: 12.7 mm
Two-way, 
Straight-
through, Offset
Proportional 
Normally Closed
1.6 Cv 1.38 Kv 50 psid (345 kPa) 
at 7 psi (48 kPa)
9 psi to 
13 psi
62 kPa to 
90 kPa
VP513B1053 O.D.: 5/8 in.; 
Nominal: 1/2 in.
O.D.: 15.9 mm; 
Nominal: 12.7 mm
Two-way, 
Straight-
through, Offset
Proportional 
Normally Closed
2.5 Cv 2.16 Kv 50 psid (345 kPa) 
at 7 psi (48 kPa)
9 psi to 
13 psi
62 kPa to 
90 kPa