Z-flex ZF-2SVEVSTF03 Vent Adapter 3 in Weil Mclain Gv

Product Description

The Z-FLEX ZF-2SVEVSTF03 is a 3-inch vent adapter designed to connect Z-Vent single-wall stainless steel venting to a Weil McLain GV boiler. This fitting serves as the starting connector at the appliance outlet, providing a secure transition between the boiler flue collar and the Z-Vent system. It is used in residential and light commercial hydronic heating installations where GV series boilers require properly fitted Category II or Category IV vent termination. Licensed HVAC technicians and plumbers install this adapter during new boiler commissioning or when upgrading existing venting to a Z-Vent configuration.

This adapter is intended for use with Weil McLain GV Series 3 and Series 4 boilers equipped with a 3-inch flue outlet. It fits into the Z-Vent starter fitting workflow, meaning it mounts at the boiler and accepts standard Z-Vent sections running through the vent system to the termination point. It is appropriate for gas-fired hydronic heating systems in residential applications where proper draft and sealed venting are required by local mechanical codes.

Key Features

• 3-inch diameter designed to match the Weil McLain GV Series 3 and 4 boiler flue outlet
• Functions as the vent system starter, connecting the appliance directly to Z-Vent sections
• Compatible with the Z-Vent single-wall stainless venting product line
• Supports proper sealed venting for gas-fired hydronic boilers

Compatibility

Designed for use with Weil McLain GV Series 3 and Series 4 boilers with a 3-inch vent outlet, used in conjunction with Z-Vent venting components.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with local mechanical codes and the appliance manufacturer instructions. Shut down the boiler and allow it to cool completely before disconnecting or modifying any venting components. Verify that the vent system diameter, material, and category rating match the boiler manufacturer requirements before beginning the installation. All joints should be secured per Z-Vent installation guidelines to maintain a proper sealed connection.

Technical Specifications

• Product Type: Adapter
• Diameter: 3 inches
• Application: Plumbing / HVAC Venting
• Used With: Weil McLain GV Series 3 and 4 Boilers

Standard Information

• Brand: Z-FLEX
• Manufacturer Part Number: ZF-2SVEVSTF03