Spence 05-01674-00 Diaphragm THPU32HP7Y If the system is fully

If the system is fully charged and bubbles persist

the Reznor 105507 replaces obsolete part numbers and features standard 1/4" and 3/16" quick-connect terminals

preventing common furnace inducer motor noise or bearing failure

Engineered for high-cycle reliability in demanding HVAC environments

Spence 05-01674-00 Diaphragm THPU32HP7Y If the system is fullyThe Spence 05 01674 00 is an industrial grade replacement diaphragm specifically engineered for the 4 inch Spence E2 main valve. This heavy duty component is fabricated from Hycar (nitrile), a high performance synthetic rubber prized for its exceptional resistance to swelling and degradation in oil rich and chemical laden environments. Maintaining the integrity of your pilot operated pressure regulator is critical for precise steam or liquid control;