This diaphragm is specifically designed for Honeywell PP901A and PP901B series units often integrated into pneumatic fume evacuation and pressure regulation systems

The "/U" suffix typically denotes a "Universal" or retail-packaged version of the exact same flange adapter used in industrial applications

replacing part numbers LB-65734B and 43J5601

Versatile Media Compatibility: High-grade Buna-N elastomers provide excellent resistance to petroleum-based fluids and general pneumatic media

Always verify internal trim sizing before installation

Hydrotherm 02-2406 Aquastat 320788-702 This diaphragm is specifically designedThe Hydrotherm 02 2406 Aquastat is a mission critical immersion type temperature controller engineered for high performance hydronic systems. Featuring a Single Pole Single Throw (SPST) switching configuration, this rugged aquastat relay provides precise thermal regulation across a broad 40F to 240F operating range. Designed for direct insertion into the medium, the Hydrotherm 02 2406 functions as a reliable high limit or low limit control, ensuring