Armstrong International B1669-5 Pressure Change Assembly 7/64" Orifice 125 PSI

The Armstrong International B1669-5 is a Pressure Change Assembly (PCA) designed for repairing and servicing inverted bucket steam traps. This complete repair kit features a 7/64-inch orifice size and is rated for 125 to 200 PSI operating pressures.

Compatible Models:

• Armstrong 800 Series (125 PSI)
• Armstrong 880 Series (125 PSI)
• Armstrong 211, 310, 811, 881, 971, and 981 models

Complete Kit Includes:

• Valve assembly
• Valve seat
• Valve retainer
• Valve lever
• Guide pin assembly with screws

This PCA kit contains all necessary valve mechanism components for complete steam trap repair. The pressure change assembly is the critical internal mechanism that attaches to the inverted bucket, allowing the trap to efficiently discharge condensate and non-condensable gases while preventing steam loss. Regular replacement of PCA components ensures optimal steam trap performance and extends service life in HVAC, process heating, and industrial steam systems.