AVK PRESSURE REDUCING CONTROL VALVE, PN16

Description

Key Features

• The lifted seat design controls the flow around the plug so that in case of cavitation this happens with minimal damage away from plug and seat
• The parabolic shape of the plug creates a smooth regulating characteristic with low gain around the near-closed positions improving control performance at low flow
• The non-symmetric axial position of the rubber diaphragm results in low stretch stress when closed
• Body and bonnet of ductile iron coated with fusion bonded epoxy, 300µm, GSK approved, RAL 5017, according to DIN 3476 and WRAS-DVGW/W270/UBA
• All rubber parts approved for drinking water
• All non-coated internals are made of stainless steel or bronze
• Seat and pilot in stainless steel AISI 304
• A needle valve fitted between the upstream side and the control chamber allows for adjustment of the regulation reaction time
• Closing the needle valve isolates the control chamber and fixes the position of the main valve allowing for service of the pilot valve
• Fittings, pipes and accessories in Ni-plated brass

AVK series 879 diaphragm actuated pressure-reducing control valves (PRV) automatically maintain a constant outlet pressure regardless of flow demand or changes in inlet pressure.

A replaceable spring inside the pilot makes it possible to operate in different pressure ranges and still keep the high precision. Setting and adjustment on a control knob on the pilot.

Both full-bore and reduced-bore versions are available with the full bore having the full capacity and the reduced bore having increased precision and smooth regulation at low flow rates.