York 022-11879-000 Valve 318172-701 or a blocked venting system

or a blocked venting system causing flames to roll out of the burner assembly

It should be connected to the suction line near the sensing bulb to ensure the valve reacts to the actual pressure at the evaporator outlet

it ensures the burner receives a consistent fuel flow

or nuisance pressure switch trips

York 022-11879-000 Valve 318172-701 or a blocked venting systemThe York 022 11879 000 is an OEM pressure relief valve engineered for critical safety regulation in York HVAC and refrigeration systems. This HVAC relief valve features a 3 8 inch MPT inlet and a 1 2 inch Flare outlet, ensuring a secure and leak resistant connection within the refrigerant circuit. Constructed from high grade brass, this 022 11879 000 relief valve provides superior resistance to corrosion and thermal stress, maintaining its mechanical