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Bell & Gossett Zone Controls & Parts

Zone controls and parts are hydronic system components used to regulate water flow, manage temperature by zone, and support the operation of heating system controls. This category features Bell & Gossett control components and replacement parts suited for zoning applications where responsive system adjustment, reliable performance, and dependable integration are important to overall heating efficiency and control accuracy.

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Bell & Gossett Heat Motor Assembly 189137
Bell & Gossett
In stock (100+ units)
Bell & Gossett Heat Motor Assembly 189137
Sale price$317.95 Regular price$383.00
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Bell & Gossett Bonnet/Retainer Assembly (6-Pack) 189139
Bell & Gossett
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Bell & Gossett Bonnet/Retainer Assembly (6-Pack) 189139
Sale price$556.95 Regular price$671.00
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Bell & Gossett Bonnet/Retainer Assembly 189139
Bell & Gossett
In stock (2 units)
Bell & Gossett Bonnet/Retainer Assembly 189139
Sale price$556.95 Regular price$671.00
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Bell & Gossett Z-1 Zone Relay 109424
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Bell & Gossett TC-1 Auto Timer Kit 113210
Bell & Gossett
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Bell & Gossett TC-1 Auto Timer Kit 113210
Sale price$136.95 Regular price$194.00
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Bell & Gossett
Bell & Gossett
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Bell & Gossett 790-1 Audible Signal S76699
Sale price$229.95 Regular price$277.00
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Bell & Gossett Replacement Valve 6099B1750
Bell & Gossett
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Bell & Gossett Replacement Valve 6099B1750
Sale price$204.95 Regular price$319.00
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Bell & Gossett
Bell & Gossett
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Bell & Gossett Ball Valve P75255
Sale price$89.95 Regular price$108.00
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Bell & Gossett Heat Motor Assembly (6-Pack) 189137
Bell & Gossett
In stock (25+ units)
Bell & Gossett Heat Motor Assembly (6-Pack) 189137
Sale price$317.95 Regular price$383.00
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Bell & Gossett SZV-075N-4WE 3/4" NPT Snap Zone Valve 109507
Bell & Gossett
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Bell & Gossett SZV-075N-4WE 3/4" NPT Snap Zone Valve 109507
Sale price$203.95 Regular price$318.00
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Bell & Gossett SZV-100S-4WE 1" SWT Snap Zone Valve 109502
Bell & Gossett
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Bell & Gossett SZV-100S-4WE 1" SWT Snap Zone Valve 109502
Sale price$204.95 Regular price$314.00
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Bell & Gossett SZV-10N-4WE 1" NPT Snap Zone Valve 109508
Bell & Gossett
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Bell & Gossett SZV-10N-4WE 1" NPT Snap Zone Valve 109508
Sale price$204.95 Regular price$314.00
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Bell & Gossett SZV-05N-4WE 1/2" NPT Snap Zone Valve 109506
Bell & Gossett
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Bell & Gossett SZV-05N-4WE 1/2" NPT Snap Zone Valve 109506
Sale price$467.95
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Bell & Gossett SZV-075S-4WE 3/4" SWT Snap Zone Valve 109501
Bell & Gossett
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Bell & Gossett SZV-075S-4WE 3/4" SWT Snap Zone Valve 109501
Sale price$207.95 Regular price$318.00
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Bell & Gossett SZV-050S-4WE 1/2" SWT Snap Zone Valve 109500
Bell & Gossett
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Bell & Gossett SZV-050S-4WE 1/2" SWT Snap Zone Valve 109500
Sale price$192.95 Regular price$296.00
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Bell & Gossett SZV-075N-000 3/4" NPT Snap Zone Valve Body 109516
Bell & Gossett
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Bell & Gossett SZV-075N-000 3/4" NPT Snap Zone Valve Body 109516
Sale price$102.95 Regular price$157.00
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Bell & Gossett SZV-10N-000 1" NPT Snap Zone Valve Body 109517
Bell & Gossett
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Bell & Gossett SZV-10N-000 1" NPT Snap Zone Valve Body 109517
Sale price$284.95
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Bell & Gossett SZV-05N-000 1/2" NPT Snap Zone Valve Body 109515
Bell & Gossett
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Bell & Gossett SZV-05N-000 1/2" NPT Snap Zone Valve Body 109515
Sale price$255.95
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Bell & Gossett SZV-100S-000 1" SWT Snap Zone Valve Body 109514
Bell & Gossett
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Bell & Gossett SZV-100S-000 1" SWT Snap Zone Valve Body 109514
Sale price$107.95 Regular price$165.00
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Bell & Gossett SZV-050S-000 1/2" SWT Snap Zone Valve Body 109512
Bell & Gossett
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Bell & Gossett SZV-050S-000 1/2" SWT Snap Zone Valve Body 109512
Sale price$96.95 Regular price$148.00
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Bell & Gossett SZV-075S-000 3/4" SWT Snap Zone Valve Body 109513
Bell & Gossett
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Bell & Gossett SZV-075S-000 3/4" SWT Snap Zone Valve Body 109513
Sale price$269.95
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Snap Zone Valves

The Bell & Gossett Snap Zone Valve is an on/off zone valve for residential and light commercial use. Snap Zone valves are precision-engineered four-wire thermoelectrically operated valves designed for heating and cooling systems.

The valve opens and closes based on the voltages applied to the actuator. The actuator can be installed or removed at any angle on the adapter ring. The compact design and universality in the actuator mounting position allows for easy installation in the most difficult positions.

Snap Zone Valve Features:

  • Soft close technology suppresses water hammer
  • Silent actuator operation
  • Internal components can be removed without having to remove units from the system
  • 360° actuator installation
  • One-handed actuator installation

Other Available Zone Controls:

ZoneTrol II AZ-1A

Bell & Gossett ZoneTrol II AZ-1A snap-on relay box is an easy-to-install single zone pump controller that mounts directly on any Bell & Gossett wet rotor circulator or Series PL booster. The Add-A-Zone turns the pump and boiler ON when the thermostat calls for heat.

ZoneTrol II

Bell & Gossett ZoneTrol II is a ready-to-install controller for hydronic circulators in residential and light commercial applications. All ZoneTrol II controllers are UL and cUL listed and feature multi-function LEDs that are visible without removing the cover for easy start-up and troubleshooting. All units are compatible with analog and digital 24 VAC thermostats, including “power stealing” designs.

From the Atoms & Bits Blog

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What is an Isolation Valve?

Published: Mar 23, 2023 By: Laura Eck

Isolation valves are designed to isolate a particular section of a system to allow maintenance or repair work to be done without affecting the rest of the system.

What Is a Pressure Reducing Valve

What Is a Pressure Reducing Valve?

Updated: Apr 22, 2026 By: Lucas Gasparotto

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