Automatic control valves H-VAL 300 and 400 series

The Pietro Fiorentini H-VAL range consist of a globe pattern hydraulically operated automatic control valves, namely 400 for the full bore and 300 for the reduced bore series, entirely produced in ductile cast iron with internal components in stainless steel.
 

Diaphragm actuated PN 25 class, the valve is designed to perform a tremendous range of applications including pressure reduction, relief, sustain, flow control, level control and many more. Each function is obtained simply by changing the circuitry and pilots, that can be combined together.
 

All information herewith contained referring to operating principle, case studies and installation guidelines, are applicable to the H-VAL 300 and 400 series unless otherwise stated.

• Body in ductile cast iron, PN 25 bar rated, globe pattern design in compliance with EN 1074 standards and available from DN 50 mm up to DN 600 mm.
• Designed to reduced head loss and minimize turbulence under a wide flow range.
• Double chambered actuator as an option.
• Stainless steel seat and mobile block assembly entirely removable from the valve.
• Silent operation and absence of vibrations, suitable for buildings and urban applications.
• Technology to reduce the risk of diaphragm failure, the latter manufactured with nylon reinforced fabric.
• Different versions of the modulating assembly, more in details the seat and the gasket holder, to provide excellent resistance to cavitation, low flow stability and obstacle free design.
• In-line serviceable from the top with having to remove the valve from the pipe.
• High quality materials and reliability for long lasting performances with internals all made in stainless steel, obturator and wedge in ductile cast iron for large diameters.