1-1/4" Press x Flange High Velocity Isolator w/ Rotating Flange

Webstone H-81405WHV Isolator Flange – Heavy-Duty Performance for Hydronic Systems

The Webstone H-81405WHV Isolator Flange is engineered to simplify installation, service, and maintenance of circulator pumps in hydronic heating systems. Built from forged, lead-free brass, this flange delivers both durability and dependability, making it a trusted choice for demanding applications.

Its 360º rotating flange and integrated multi-function drain provide unmatched flexibility during installation and servicing. This dual-purpose design minimizes downtime, reduces labor, and ensures efficient pump isolation when required.

Key Features

• Forged Brass Construction: Resists corrosion and extends service life under continuous system operation.
• Full-Port Design: Maintains maximum flow through the system, reducing restrictions.
• 360º Rotating Flange: Provides full adjustment to align with system piping, eliminating awkward angles.
• Dual-Function Drain: Allows purging and servicing from either side of the pump connection.
• Adjustable Packing Gland: Ensures a tight, leak-free seal for long-term reliability.
• High Pressure Rating: Rated to 250 PSI, capable of handling high-velocity hydronic applications.

Technical Specifications

• Model: H-81405WHV
• Size: 1-1/4 inch
• Material: Lead-free forged brass
• Pressure Rating: 250 PSI
• Temperature Range: Up to 250°F
• Features: Rotating flange, dual-function drain, adjustable packing gland

Installation Notes

While designed for straightforward installation, the Webstone H-81405WHV should be installed by a licensed plumber or HVAC technician to ensure compliance with mechanical codes and optimal system performance. Proper torque on fasteners and correct alignment of the rotating flange are essential for long-term reliability.

Professional Application

For Contractors: This isolator flange reduces service time on job sites, cutting labor costs and minimizing callbacks. Its robust build quality ensures consistent results in residential and light commercial hydronic systems.

For System Maintenance: The integrated drain makes purging and servicing faster, reducing the need for extra fittings or components.

Summary

The Webstone H-81405WHV Isolator Flange combines strength, precision, and functionality in one professional-grade component. With its heavy-duty brass construction and versatile design, it’s the ideal solution for reliable pump isolation and long-term hydronic system performance.