Watts 0841005 SVA Vent Can this replace older 221455A/U

Can this replace older 221455A/U models

this model is a direct-mount encapsulated control designed to thread directly onto a 1/4 inch SAE female flare fitting with a built-in depressor pin

Is the 8402-078BX a direct replacement for the older 8402-078 model

or a motor that hums without turning over

Watts 0841005 SVA Vent Can this replace older 221455A/UThe Watts 0841005 SVA Vent is a professional grade 1 8" angle vent engineered for high performance air removal in one pipe steam heating systems. As a technical replacement for standard non vacuum adjustable float type steam air vents, this unit features a heavy duty brass body and an internal brass float designed to withstand the rigors of commercial and residential steam mains. This adjustable steam air vent allows for precise proportional venting,