In addition to standard production range, custom designed diverter and flow control valves are available for the most demanding applications. Different bore sizes, unique flange connections, non-standard body designs and special accessories are accomplished through our engineered products group. Custom engineered production incorporates problem definition, conceptualization, design, validation, production and installation. Polimak carries out these steps efficiently and provides custom engineered solutions in short times.
Application Parameters For Valve Selection
Each process for each valve has its own unique requirements. Selecting the most efficient valve for a particular system requires detailed information about that system. Collecting correct technical specifications of a dry bulk handling system plays cruical role in determining the features of the valve. The factors that are used in valve selection are described as follows:Intended use of the valve; shut-off, flow regulation, diverting, converging, venting etc
Material to be handled
Shape of the bulk material; powder, granular, pellet, flake etc
Particle size of the bulk material
Bulk density of the handled material
Physical properties of the bulk material; sticky, abrasive, corrosive, dust content, temperature level
Inlet and outlet connection shapes and sizes
Size of the connected pipelines, chutes, hoppers, silos or other equipment
Pressure or vacuum level at inlet and outlet ports
Installation location; indoors, outdoors
Type of application; food, sanitary, explosive area etc.
Site conditions; minimum and maximum ambient temperature, moisture content, offshore etc
Valve construction material; carbon steeel, stainless steel, aluminium, hardox, welded body, cast body etc
Any need for fluidization, aeration or vibration for bulk material flow control
Operation frequency, amount and speed of valve
Power and process air supply
Cross contamination concerns
Type of actuation; manual control, pneumatic piston, pneumatic actuator, hydraulic piston, electrical actuator, pneumatic positioner, electrical positioner, handwheel, hand lever, chain wheel etc.
Feedback signal requirement
Required certifications (food grade, explosion protection, Atex certification etc.)
Custom Designed Bulk Material Handling Valve Application Examples