Brochure

Heat Motor Zone Valves
Application
Taco Heat Motor Zone Valves provide a convenient way
to create individual zones or equipment isolation in a
hydronic heating system. Utilizing one pump along
with multiple zone valves, flow can be started, stopped,
or diverted through the system to provide individual
room or area comfort control and energy savings. Taco
offers many versions and sizes of the Heat Motor Zone
Valve to meet all your zone valve needs.
Features
• Proven Performance – Millions in Use.
Taco Zone Valves are the Industry’s Top
Choice for Consistent Performance.
• Rugged Dependability
• Silent Operation
• Twist Off Head
• Bellows or Globe Valve Construction Ensures
Positive Shut-off and Leak Proof Operation
• Patented Construction
• Easy to Install
• Manual Open (Bypass) Lever
• 24 VAC Powered with Isolated End Switch
• 100% Factory Tested
• Made in the USA
• 3 Year head, 5 Year Body Warranty on the 570 Series,
1 Year Warranty on all Other Models
Choose The Right Valve For Your Application
550 Series (Models 555, 556, 557)
Designed for high head capacity applications
such as high-rise residential and commercial
buildings. The heavy-duty construction allows
this series of Taco Heat Motor Zone Valves
to operate up to 150 feet of pump head.
Available in 1/2”- 1” sweat connections.
Geothermal Valves (Models 5101G, 556G, 557G)
Designed for high head, open system zone
control. The unique end switch design permits
control of the heat pump by the valve (see
figure A). This allows movement of cold water
into the coil before the heat pump actually
starts. Available in 3/4” threaded, 3/4” and 1”
sweat connections.
560 Series (560, 561, 562)
A 3-Way bypass version of the 570 Gold Series.
This valve is used to control the flow to a fan
coilor terminal heating unit (see figure B).
Available in1/2” – 1” sweat connections.
570 Gold Series (570, 571, 572, 573)
The Gold Series is the industry standard for
hydronic heating applications. The quiet and
dependable operation has made this valve
an industry leader for decades. The manual
open lever and twist off head makes installa-
tion and service easy. Available in
1/2” – 1-1/4” sweat connections.
Figure B: 560 Series 3-Way Valve Piping
Mounting Positions
Figure A: Geothermal Zone Valve Wiring to a Heat Pump Control
Thermostat
Heat Pump
Control Panel