Lennox 33J91 Orifice 318973-401 always verify the contact rating

always verify the contact rating and coil voltage before replacement

Direct Mounting: Simplified direct drive setup eliminates the need for expensive linkage kits

this component prevents evaporator freeze-ups and compressor slugging during low-load scenarios

This suction air pressure switch is engineered to precisely monitor and regulate pressure within your hydronic heating applications

Lennox 33J91 Orifice 318973-401 always verify the contact ratingFor technicians performing a propane conversion or repairing a high efficiency heating system, the Lennox 33J91 Orifice (Part #33J9101) provides the calibrated precision required for safe, optimal combustion. This OEM LP gas burner orifice is machined from heavy duty brass and features a precise . 0545 inch (54. 5 drill size equivalent) opening to regulate gas flow at the manifold. Designed with a 7 16 27 NPT thread, it ensures a leak free, high