Grundfos 00519850 1/2" Bronze Union Isolation Valve Set

The Grundfos 00519850 is a 1/2-inch bronze union isolation valve set designed for use with Grundfos circulator pumps and hydronic heating systems. This valve set provides convenient isolation capability, allowing you to service or replace pump components without draining the entire system.

Key Features:

• 1/2-inch NPT connection size for standard residential and light commercial applications
• Durable bronze construction for corrosion resistance and long service life
• Union design enables easy pump removal and reinstallation
• Isolation valves on both sides allow complete pump isolation
• Compatible with Grundfos UP, Alpha, and other circulator pump series
• Ideal for hydronic heating, radiant floor heating, and hot water recirculation systems

This valve set simplifies maintenance procedures by eliminating the need to drain heating system loops when servicing pumps. The bronze construction ensures reliable performance in potable water and closed-loop heating applications.