Air or Electrically operated (Automatic Actuated valves)
Flow Diversion Valves are used to divert flow, as they have three ports in which one is inlet and other two are outlets.
These valves may be 3-way ball valve, 3-way diaphragm valve or 3-way dumping or piston valve. FDV reduces the number of valves, as there are two outlets, which can be hooked up to two different lines. FDVs are to be mounted in such position for 100% drain ability. The dead legs are minimized, as valves and fittings are reduced. FDVs are used as dumping valve when conductivity fails in therecirculationloop.
Air or Electrically operated FDVs (Automatic Actuated valves) are used when the manual operations are to be replaced by control panel operations, but the utilities like air or electricity has to be incorporated besides the valves. The utilities required for the automatic valves are 4-6 kgcm2 for air & 23VACDC or 230VAC for electricity.There are two types of valves
Manually operated
Air or Electrically operated (Automatic Actuated valves)
Valves are used to regulate, divert, and shut-off the product which is passing through the pipeline. Valves suggested for pharmaceutical applications are Diaphragm valve with EPDM or PTFE lined diaphragms, Ball valve with PTFE seats, Butterfly valve with silicon seat, they may be manual or automatic as per the requirement. Valves preferred by all pharmaceutical industries are diaphragm valves as they have 100% drain ability, when installed at 150. Diaphragm valve body is available in SS 316L but the bonnet is available in Cast Ion with epoxy coating or in SS 304.These valves have triclover ends or plain ends as per requirement. Diaphragm with PTFE lined is specifically used for Pure Steam, Water for Injection and some of the corrosive chemical transferline.
Air or Electrically operated valves (Automatic Actuated valves) are used when the manual operations are to be replaced by control panel operations, but the utilities like air or electricity has to be incorporated besides the valves. The utilities required for the automatic valves are 4-6 kgcm2 for air & 23VACDC or 230VAC for electricity.