Xylem-McDonnell & Miller 309000 Slide Wire Resistor Kit Model 7B-1R

Description

Xylem-McDonnell & Miller 309000 Slide Wire Resistor Kit — Model 7B-1R

The Xylem-McDonnell & Miller 309000 is a genuine OEM Slide Wire Resistor Kit designed as a precision replacement component for compatible McDonnell & Miller boiler and hydronic control systems. Engineered to restore accurate, reliable performance to your existing controls, this kit is the trusted choice for HVAC and hydronic service professionals.

Product Overview

McDonnell & Miller has long been a leading name in boiler water level and flow controls, and their replacement parts are held to the same exacting standards as their original equipment. The Model 7B-1R Slide Wire Resistor Kit provides a direct, drop-in solution for technicians servicing boiler control systems that rely on slide wire resistor technology for precise modulating or positioning feedback.

Key Features

• Genuine OEM replacement slide wire resistor kit from Xylem-McDonnell & Miller
• Model Number: 7B-1R
• SKU: 309000
• Designed for use with compatible McDonnell & Miller boiler and hydronic control assemblies
• Ensures accurate resistive feedback for reliable control system operation
• Supports proper modulating control and positioning performance
• Quality construction for long service life in demanding hydronic environments

Applications

• Boiler control system maintenance and repair
• Hydronic heating system servicing
• Replacement of worn or failed slide wire resistor components in compatible control assemblies

Why Choose Genuine McDonnell & Miller Parts?

Using genuine OEM replacement components ensures compatibility, reliability, and system safety. The Xylem-McDonnell & Miller 309000 Slide Wire Resistor Kit is the correct specification part for supported control models, helping technicians avoid costly callbacks and maintain peak system performance.