Armstrong B1673-7 Printed Circuit Assembly Kit

Armstrong B1673-7 PCA Kit is the official OEM pressure-change assembly for Armstrong bucket traps used in Armstrong International HVAC steam systems. This kit bundles all the critical parts needed to service the valve mechanism: a valve, valve retainer, guide pin assembly, valve lever, and valve seat, providing a complete replacement set for the 9/32-inch orifice traps found in many Armstrong installations. The PCA is specified for bucket traps rated at 215–225 psi, 315–225 psi, 415–225 psi, or 815–225 psi, reflecting the range of Armstrong models that use this assembly to regulate condensate discharge and maintain trap performance. As an original equipment manufacturer part, the B1673-7 is designed to fit Armstrong bucket-trap assemblies with precise tolerances, helping to preserve original operation, response characteristics, and ease of maintenance during field service. Availability can vary by supplier; some retailers list B1673-7 as obsolete, so for current stock or replacement options it’s advisable to check with an Armstrong International parts distributor or authorized service partner.