While the fitting itself is designed to handle pressures up to 5

Operating at a dual voltage rating of 370/440 VAC

the HPO-1511 is designed with specific ventilation slots to ensure that the HVAC controls receive accurate ambient air samples

and resistant to oils and diluted mineral acids

5 to 10 psi

Johnson Controls VG7000-1005 Spring Kit While the fitting itself isThe Johnson Controls VG7000 1005 Spring Kit is a professional grade field mounting solution designed specifically for HVAC technicians and mechanical contractors working with pneumatic valve actuators. This kit is optimized for a 4 8 PSI spring range, providing reliable compression and return force for 1" and 1 1 4" valve bodies. Engineered for a 1 2" stroke configuration, it ensures precise modulation and tight shut off in VG7000 series bronze globe