PROTEGO® Pilot-operated P/V Valve

The PROTEGO® Type VN-A-PCPF pilot-controlled diaphragm valve is a newly developed valve for pressure and vacuum relief. It is primarily used as a device for out-breathing in tanks, containers, and process equipment. It provides protection against vacuum and overpressure and prevents the intake of air and unallowable product vapor loss up to the set pressure. The valve can also be used as an in-breathing valve where the main valve is directly controlled when it is exposed to a vacuum, i.e., it functions as a weight-loaded diaphragm valve.
Benefits:
– controlled by corrosion-resistant control valve (pilot valve)
– small amounts of tank substance is released into the atmosphere when the valve is opened
– max. 10% pressure increase up to full lift
– extreme tightness, resulting in lowest possible product losses and reduced environmental pollution
– set pressure close to opening pressure for optimum pressure maintenance in the system
– protection of the main valve control diaphragm from low temperatures – high durability
– high flow capacity
– can be used in explosion hazardous areas
– field test connection possible upon request
– field test kit upon request