Mepco (Dunham Bush) S-472 Seal R-448A How does a "Close on

How does a "Close on Fall" pressure switch work in a furnace

this specific bracket is optimized for 6-1/2 inch motor diameters

Its stainless steel spring and heavy-duty casting make it a preferred choice for HVAC steam distribution and process heating maintenance where overpressure protection is non-negotiable

it utilizes a PFA Teflon soft seat to ensure positive shut-off and resistance to corrosive boiler chemicals

meeting strict safety protocols for electrical contractors

Mepco (Dunham Bush) S-472 Seal R-448A How does a "Close onThe Mepco (Dunham Bush) S 472 Seal is a heavy duty mechanical shaft seal engineered for 5 8 inch pump shafts, specifically designed for 56J motor frames in commercial and industrial HVACR systems. As a critical component in centrifugal pumps, this Type 21 mechanical seal utilizes a high grade carbon ceramic seating interface to prevent fluid leakage between the pump housing and the rotating shaft. The technical construction features Buna elastomers