Armstrong Fluid Technology 89975001-81701K Seal Kit R-410A Applying it to systems where

Applying it to systems where steam is regulated down to 10 PSI from a higher pressure source can lead to internal seat damage and valve failure

Enhanced Safety Logic: Microprocessor continuously monitors the flame sensor and pressure switch to prevent unsafe operation

Reliable Switching: 15A rating handles standard 115V blower loads and accessories like EACs

NFC Configuration: Set parameters and troubleshoot directly from a smartphone using the White-Rodgers Connect app

By replacing standard orifices with this bolt-on thermostatic expansion valve

Armstrong Fluid Technology 89975001-81701K Seal Kit R-410A Applying it to systems whereThe Armstrong Fluid Technology 89975001 81701K Seal Kit is a critical mechanical seal replacement designed for high performance HVAC centrifugal pumps. Engineered for precision and durability, this EPDM seal kit ensures a leak proof interface within your hydronic heating and cooling systems, maintaining optimal pressure and fluid containment. This specific kit serves as the direct replacement for 89975091 81701K, offering seamless backward