The 4-way valves are designed to be installed in correspondence of the vacuum / pressure line of equipment typically used to clean sewer lines and cesspits. The 4-way valves allow reversing the vacuum pump air flow, thereby pressurising the vacuum tank. This way, the operations to the discharge the material from the tank are optimised.
The 4-way valves can be manual, with manual actuation lever, or pneumatic, with pneumatic actuator.
They are available with various diameters (2”, 2” ½, 3”, 4”, 6” e 8”), each of which with cast iron deviator (typically suitable for vane decompressors) and bronze or brass deviator (typically suitable for lobe decompressors). The DN150 and DN200 4-way valves are available. The plug is made of cast iron or brass for the DN150 version (only brass on the DN200 version). Brass is reducing friction and is spark-free.