Product Overview

Accessories/Repair Parts
NOTE: The last digit of valve model number
represents the type of actuator.
Conduit Connector
HPO-5063 For actuators “F/B/A”
Replacement Block Cover and Terminal Plug
HPO-5062 For proportional actuators “A/B”
HPO-5061 For tri-state actuator “F”
Replacement Valve Bodies
VFZ-4102AM 2-way, 1/2", 1.0 Cv
VFZ-4102BM 2-way, 1/2", 2.5 Cv
VFZ-4102CM 2-way, 1/2", 4.0 Cv
VFZ-4103AM 2-way, 3/4", 4.1 Cv
VFZ-4104AM 2-way, 1", 7.0 Cv
Differential Pressure ∆ p (psi)
Differential Pressure ∆ p
(
kPa
)
Flow Rate (gpm)
Flow Rate
(
m
3
/hr
)
1"
(
25
)
Cv = 7.0
1/2"
(
15
)
, 3/4"
(
20
)
Cv = 4.1
1/2"
(
15
)
Cv = 2.5
1/2"
(
15
)
Cv = 1.0
8 9 10 20 30 40 50 60 70 80 90 100 200 300 400
100
1 2 3 4 5 6 7 8 9
10 20 30 40 50 60
70
0.5
0.4
0.3
0.2
0.1
0.6
0.8
11
2
3
4
5
6
8
10
20
25
16
30
40
50
60
80
100
1
10
2
1
0.8
0.6
0.5
0.4
0.3
0.2
0.1
0.08
0.06
0.05
0.04
0.03
3
4
5
6
8
20
30
40
50
60
10
1
2
3
Select a valve given: Required flow = 6 gpm
Desired pressure drop = 6 psi
Choose a 1/2-inch valve, Cv 2.5
Replacement Actuators
MEP-3501 “N” (NC, 2-position, 24 VAC,
spring return)
MEP-3502 “Q” (NC, 2-position, 120 VAC,
spring return)
MEP-3503 “M” (NO, 2-position, 24 VAC,
spring return)
MEP-3504 “P” (NO, 2-position, 120 VAC,
spring return)
MEP-3510 “F” (Tri-State, 24 VAC, oating)
MEP-3511 “B” (0–10 VDC proportional)
MEP-3516 “A” (10–0 VDC proportional)