Product Overview

Specifications
Valve Body
Service Hot or chilled water, up to
50% glycol
Connections Female NPT
Seat Style Metal to metal
Valve Body Rating ANSI Class 125
Max. Inlet Pressure 125 psig (862 kPa)
Max. Close-O (AB-A) 1/2 to 3/4" = 44 psi (303
kPa); 1" = 22 psi (152 kPa)
Close-O Ratings According to ANSI/FCI 70-2
(AB-A)
Leakage Rating ANSI Class III (AB-A)
Flow Characteristics Linear
Material
Body Brass
Body Trim Brass
Stem Stainless steel ASTM A582
Type 303
Packing Ethylene propylene O ring
Actuators
All 24 in-lb. (105 N•m) torque
Proportional 24 VAC Power, 50/60 Hz, 2.5
VA, 34 sec. running time, 9 oz.
(0.25 kg)
Tri-State 24 VAC, 50/60 Hz, 0.8 VA, 150
sec. running time, 9 oz. (0.25
kg)
2-Position 24 VAC or 120 VAC, 60 Hz, 9.8
VA, 35 sec. running time, 1.18
lb. (0.54 kg)
General
Mounting Location NEMA 1 (interior only)
Temperature Limits
Medium
34 to 230° F (1 to 110° C)
Ambient 41 to 122° F (5 to 50° C) @ 0 to
90% RH (non-condensing)
Shipping –13 to 158° F (–25 to 70° C)
Approvals UL 873
cUL certied to Canadian
Standard C22.2 No. 24-93
CE compliant (non-spring
return actuators)
Applications
Diverting
As the valve
stem moves
downward, the
ow through
ports AB-A
decreases and
the ow through
ports AB-B
increases. As
the valve stem
moves upward,
the ow through
ports AB-A
increases and
the ow through
ports AB-B decreases. If power fails, a spring-return
actuator determines whether the valve fails with
ow to port A or port B.
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 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)
Replacement Valve Bodies
VFZ-4402AM 3-way, 1/2", 1.0 Cv
VFZ-4402BM 3-way, 1/2", 2.5 Cv
VFZ-4402CM 3-way, 1/2", 4.0 Cv
VFZ-4403AM 3-way, 3/4", 4.1 Cv
VFZ-4404AM 3-way, 1", 7.0 Cv
COM
A
B
AB