Honeywell MZV Series Catalog Page
Motorized Zone Valves
DIMENSIONS IN INCHES (MM)
1/2 IN.
3-5/16 (84)
3-5/16 (84)
3-13/16 (97)
3-13/16 (97)
1 (25)
13/16 (21)
1 (25)
1 (25)
4-13/16 (122)
4-13/16 (122)
4-13/16 (122)
4-13/16 (122)
11/16 (17)
11/16 (17)
13/16 (21)
13/16 (21)
3/4 IN.
1 IN.
1-1/4 IN.
M23259B
1-5/8 (41)
1-5/8 (41)
1-5/8 (41)
1-5/8 (41)
C
B
AED
SIZE
1 IN.
3/4
525
VALVE
SIZE
MZV
SERIES
524
525
526
527
A
BC DE
MZV Series Motorized Zone valves
Honeywell MZV Series is the first linear zone valve with a built-in
balancing plug that permits pre-balancing for each zone.
• Rack and pinion linear design.
• Fast acting, 15 seconds to open, 5 seconds to close.
• Two piece rack design to extend service life.
• Low power consumption, 8 valves, 40 VA transformer.
• External valve position indicator.
• Quiet operation, no water hammer.
• Built-in tamper resistant balancing valve for pre-balancing.
• High torque, constant speed synchronous motor.
• Cooler running, longer life motor.
• Operator can be replaced without draining system.
• Manual opening feature.
• Replaceable valve cartridge.
• Large adjustable flow, 1/2 in. 3/4 in. Cv 5.8; 1 in. 7.0 Cv; 1-1/4 in. Cv
7.0.
• Motor CSA recognized.
• 4 wire operator with auxiliary switch.
• 2 wire without switch, 24 in. leads.
• Compat ble with programmable thermostats.
• Bronze casting; brass/stainless trim.
• USA Patent Nos. 5,529,282; D369,650; 5,941,500; 6,032,924.
• UK Patent No. 2,052,382. 24 VAC, 60 Hz, 0.25 ampere.
• 30 mm collar (valve/actuator interface)
Dimensions in inches (millimeters) Patented long life rack and pinion design with built-in balancing
valve
M18311
Application: Residential or Commercial Zoning for hot water heating or
chilled water air conditioning systems, fan coil units or indirect water
heater service.
Body Pattern: Tw o- w ay
Volt ag e: 24 Vac
Frequency: 60 Hz
Maximum Ambient Temperature: 125 F (52 C)
Product Number
Capacity
(Cv)
Pipe Size
Connection
Type
Auxiliary End
Switch
Maximum Closeoff Pressure
Maximum Water
Pressure
Voltage FrequencyDN inch (psi) (kPa) (psi) (kPa)
MZV524-T/U 5.8 Cv DN15 1/2 in. NPT — 20 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV524E-T/U 5.8 Cv DN15 1/2 in. NPT SPST 20 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV525/U 5.8 Cv DN20 3/4 in. Sweat — 20 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV525-T/U 5.8 Cv DN20 3/4 in. NPT — 20 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV525E/U 5.8 Cv DN20 3/4 in. Sweat SPST 20 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV525E-T/U 5.8 Cv DN20 3/4 in. NPT SPST 20 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV526/U 7.0 Cv DN25 1 in. Sweat — 17.5 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV526-T/U 7.0 Cv DN25 1 in. NPT — 17.5 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV526E/U 7.0 Cv DN25 1 in. Sweat SPST 17.5 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV526E-T/U 7.0 Cv DN25 1 in. NPT SPST 17.5 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV527/U 7.0 Cv DN32 1 1/4 in. Sweat — 17.5 psi — 125 psi 862 kPa 24 Vac 60 Hz
MZV527E/U 7.0 Cv DN32 1 1/4 in. Sweat SPST 17.5 psi — 125 psi 862 kPa 24 Vac 60 Hz
214 customer.honeywell.com 70-6910
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