Design Layouts
Types EMI/1, EMII/1 & DM/1

FUNCTIONAL DESCRIPTION

• Production
  • The pig is retained in the launch station while product flows from the receiving station. 

• Product Push Out
  • Valves V4.1 and V4.2 (see diagram for EMI/1) are retracted and the V3 pushes the pig into the pipe. Valves V1 and V2 are activated to allow the push out media to drive the pig and residue product to the receiving station.

• Pig Return
  • When the pig is stopped at the catching pipe, valves V6 and V7 are activated to immediately return the pig to the launching station. 

• Cleaning
  • The pig is cleaned inside the launching station at the same time as the rest of the station is cleaned. 

FUNCTIONAL DESCRIPTION

• Production
  • The pig is retained in the catching pipe and retained in place by activated pig stopper V5 (see diagram for EMII/1). Product enters the system via the special Tee. 

• Product Push Out
  • Pig stopper V5 is retracted and valves V6 and V7 activated to push the pig and residual product towards the receiving station.

• Pig Return
  • The pig is returned to the launching station propelled by gas and pushes out residual post rinse water. Note: pigs cannot be run through dry pipes. 

• Cleaning
  • The pig is cleaned inside the receiving station at the same time the rest of the system is cleaned.

This system offers a number of advantages for specific process conditions.

• Multi-Directional
  • Pigs S1 or S2 (see diagram for DM/1) may push the residual product in the desired diretion while the other pig is held in its station.

• Anti-Foaming
  • For product that reacts with air and creates unwanted foam, pigs S1 and S2 are driven at the same time. When returning, one pig provides phase separation of air from the product. 

• Single Pig
  • It if is not desirable to use a special Tee as in system EMII/1, then system DM/1 with single pig can be used.

• Other Systems
  • GEA Tuchenhagen also offers variations that allow semi-automatic or manual operation of the system. Please contact GEA Tuchenhagen.