Siemens Building Technology 333-071 Diaphragm 319852-301 making it suitable for large-scale

making it suitable for large-scale HVAC damper actuators and heavy valve assemblies

With a 95-degree stroke and a 1/2-inch round shaft

For other series

making it a drop-in match for specific Trane and American Standard units

Always verify the Micro Board version before ordering

Siemens Building Technology 333-071 Diaphragm 319852-301 making it suitable for large-scaleThe Siemens Building Technology 333 071 Diaphragm is a critical replacement component designed specifically for No. 4 pneumatic damper actuators with sheet metal cylinder housings. Engineered for high temperature pneumatic systems, this EPDM based diaphragm ensures consistent seal integrity and terminal equipment control in demanding HVAC environments. This specific 5 pack kit is compatible with Siemens 331 series actuators featuring part numbers 331