Is this a normally open or normally closed valve

technicians should verify if an EPDM "Hi-Temp" variant like the GB-D is more appropriate for the specific thermal load of the system

easing inventory management for service trucks

Depending on the specific PopTop actuator used (AG or AH series)

Enables the use of high-efficiency Macon thermostatic heads and electric actuators

Carrier 123324-005 Prefilter Els PW 17895 Is this a normally openThe Carrier 123324 005 Prefilter is a critical first stage filtration component designed for specific Carrier air handling units and commercial HVAC systems. Measuring exactly 16x12 inches, this washable aluminum mesh filter is engineered to capture large airborne particulates and debris before they reach higher efficiency secondary filters or sensitive internal coils. By maintaining low static pressure and high airflow velocity, this 16x12 prefilter