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Erie’s motorized hydronic valves, the PopTop™, provide convenient, reliable and easy installation for a variety of heating and cooling applications. Installation is a snap with easy, one-handed removal or engagement of the actuator to the valve body. Push the button and lift. It’s that simple.


  • One-handed engagement or removal of the motorized actuator to the valve body.
  • Valve actuator can be easily attached after the valve body has been installed into the system.
  • Mounts quickly and easily without the need of linkages or calibration.
  • Available in 2-way and 3-way port configurations, 1/2” (15mm) through 1-1/4” (32mm) sweat or 1/2” (15mm) to 1” (25mm) threaded connections, 1.0 to 8.0 Cv range.
  • Available factory coupled, or as individual bodies and actuators.
  • Direct replacement for all existing PopTop™ applications.
  • Rugged 300 PSIG rated brass forged body design for long life.
  • UL listed actuator.

​Griswold Controls is excited to announce an expansion of their Actuated Valve product line. They have partnered with Schneider Electric to offer the very popular Erie PopTop™ Zone Valve. Since most coils and heating / cooling equipment need an actuated control valve to control the flow of water, Zone Valves are used in the HVAC industry when an inexpensive  and compact actuated control valve is required. The Erie PopTop™ Zone Valve is a very well respected product in the industry and has been used on Griswold's coil piping packages for years. These valves are designed for application to closed hydronic heating and cooling systems.

*Use in systems which have substantial make-up water (open systems) is not recommended. 

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Lewis Mechanical Sales, Inc in Corpus Christi serves the following industries for HVAC:

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We offer best in class HVAC products and solutions:           

  • Marley cooling towers, fluid coolers                 
  • Mueller heat exchangers                                  
  • Kinetics  vibration and noise control              
  • Desert Aire dehumidification
  • Emerson Variable Frequency Drives
  • Griswold Controls HVAC valves, piping
  • Enviro-Tec VAVs, FCUs, BCUs
  • Lakos Solids Filtration
  • Islandaire PTAC, VTAC                        

Product Spotlight

Griswold Controls Erie PopTop™ Zone Valve

Lewis Mechanical Sales, Inc

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