Siemens Building Technology 333-071 Diaphragm 324846-701 Fail-Safe Logic: The 3-7 PSI

Fail-Safe Logic: The 3-7 PSI spring return actuator ensures the valve reverts to the normally open position

ensuring high-fidelity communication with HVAC actuators and valves

Built into a corrosion-resistant steel housing

This design allows it to wrap tightly around small diameter sheaves without the internal stress that causes premature cracking

Siemens Building Technology 333-071 Diaphragm 324846-701 Fail-Safe Logic: The 3-7 PSIThe 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