Description
3.5 Gas
ballast
When condensable vapours are pumped, they may be compressed above the saturated va-
pour pressure and condense.
Opening the gas ballast valve
(1)
in the
suction line of the last pump stage allows
air to flow into the pump chamber. This
prevents condensation and flushes the
pump clear.
Operation leads to:
- Increasing the ultimate pressure and
- Increasing the operating temperature.
Fig. 2 MPC 1201 Ep with gas ballast valve
(1)
The gas ballast valve is only provided as standard for MPC type diaphragm pumps. The fit-
ting into other pump types is an option or must be specified in the supply contract.
3.6
Scope of Delivery
The scope of delivery is specified in the supply contract.
3.7 Accessories
Designation
Usage
Order no.
Vacuum Control Box
VCB 424
For measuring and regulation of vacuum.
600037
Gas ballast valve
For diaphragm pumps of type MP… p,
manually operated.
400599-02
10 4000722
