Watts F256661 Valve 319847-401 Its thermal expansion bypass feature

Its thermal expansion bypass feature manages pressure spikes in closed systems

Durable Construction: Nickel-plated forged brass body with stainless steel ball and stem ensures longevity and resistance to corrosion

The Watts 3401-01 Repair Kit is a field-essential OEM replacement part engineered specifically for the 6-inch Watts 115E regulator valve

delivering 1075 RPM across 3 speeds for precise airflow modulation

Watts F256661 Valve 319847-401 Its thermal expansion bypass featureThe Watts F256661 140S 3 150 210 FS is a freeze stat temperature limit control used in HVAC systems to protect coils, heat exchangers, and air handling equipment from low temperature damage. It functions by monitoring temperature and initiating a control response when conditions approach unsafe levels, helping prevent coil freeze up and system failure. In the field, this type of control is commonly used in air handlers, hydronic coil assemblies, and