Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent

Between a faulty auto-fill valve and air vent, my second floor radiators would become air-locked. Replaced both and now Im staying nice and warm! This is one of those preventative maintenance items you should replace every couple/few years.

Worked perfectly, feels heavy and well made. The one it replaced was 15 years old, so time will tell.

I ordered this air vent to replace our old Maid-O-Mist vent, which has started to leak water and was heavily covered by mineral deposits. The product arrived exactly as shown on photo, its build quality is excellent, well worth its price and should last many, many more years.

Whats not to love about a Taco vent? They last for years. Fast delivery - direct replacement.

1/4

Connected to my solar hot water system. Heard air exiting until the system reached 10 psi. Well made product.

Expansion tank went bad. Doesnt hurt to replace the vent valve. Cheap insurance.

worked as advertised

It works like it should.

It does what it is supposed to, have used this same model for a few years now without issue.