Maintaining the pressure of Variomat Reflex Winkelmann GmbH Variomat Giga et al.

The Variomat pressure maintenance units regulate the pressure by means of a pump in the hydraulic system. When the set pressure is exceeded, the bypass valves open, and water flows from the system into the expansion tank. The water level in the tank rises, and the pressure in the system decreases. If the pressure is too low, the pump turns on and pumps water from the expansion tank into the system: the volume of water in the tank drops, and the pressure in the system increases. "Variomat" has a deaeration function. The flow from the system enters the expansion tank with a reduced pressure, the released air under a small excess pressure is released through the air vent.

Variomat
The nominal volume of the tanks is from 200 to 5000 liters, while delivery of non–standard sizes up to 10000 liters is possible on request. The control device combines the functions of maintaining pressure with 1 or 2 pumps and controlling bypass valves (electric ball valves and a patented system for automatically switching on water pressure control).

Variomat Basic. Operation manual.
Variomat with Touch control system. Operation manual.

Variomat Giga
Designed to work with large volumes and high pressure. The nominal volume of the tanks is from 1000 to 5000 liters, while delivery of non–standard sizes up to 20,000 liters is possible on request. An additional solenoid valve ensures minimal pressure reduction. In a non-standard version, "Variomat Giga" can be used at maximum permissible temperatures of more than 110 °C and a nominal pressure of more than 16 bar.

Variomat Giga with Touch control system. Operation manual.

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