Solid brass bleed valve for hydronic heating (4-point 1/2")

Dual Function Performance: This valve combines automatic and manual modes to efficiently vent air, ensuring optimal operation of your heating system before interruption. Solid Brass Material: Made of robust brass with a nickel-plated finish, this air vent resists heat and wear, offering exceptional durability in humid environments. Simplified Threaded Installation: Featuring a standard 1/2-inch thread, it easily installs on existing radiators and boilers thanks to a secure, leak-proof connection. Wide Compatibility: Designed for domestic heating systems using water or glycol mixtures, it adapts to various common operating temperatures and pressures. Convenient Pack: The package includes two identical air vents, providing a complete solution for replacing multiple units and keeping a spare for maintenance.