it is recommended to mount the detector with the conduit holes facing downwards

What material is used for the Schneider Electric AT-11-500

the VG7000-1015 is a hardware spring kit used for field-mounting or re-springing an existing pneumatic actuator

Is an EPA 608 certification required for purchase

which can restrict airflow and lead to downstream water leakage

Johnson Controls P47BA-6 Pressure Control Els PW 29614 it is recommended to mountJohnson Controls P47BA 6 Steam Pressure Limit Control, 120 208 240 277 Vac Electrical Rating, SPST, Contacts Close on Rise, 0 Psi to 150 Psig, 12 to 50 Psi Differential, 325 Psi Maximum Allowable Pressure, Automatic Reset