The 4-way valves DN200 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 DN200 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.
The inside valve is made in antifriction and non-sparking alloy.