Description

Gestra intermittent and Continuous Blowdown valves are used Due to the continuous evaporation process in the steam boiler the density and hence the TDS (= Total Dissolved Solids) concentration of the boiler water is increased.

The TDS level must remain within the limits specified by the boiler manufacturer and applicable guidelines. For this purpose a certain amount of boiler water (= boiler blowdown) is discharged continuously or periodically.

The continuous blowdown valves BA… and BAE… feature specially designed and wear resistant nozzle stems that enter concentrically into a system of expansion chambers which are arranged one after the other, making the valve well suited for the continuous discharge of boiler blowdown at very high differential pressures. The continuous blowdown valves BA… and BAE… are suitable for operation in steam boiler plants according to TRD 604, EN 12952 and EN 12953.

■ BA 46 PN 40, manually operated

■ BA 47 PN 63, manually operated

■ BAE 46 PN 40, operated by the electric actuator

■ BAE 46-1 PN 40, operated by the electric actuator

■ BAE 46-3 PN 40, operated by the electric actuator

■ BAE 46-3-1 PN 40, operated by the electric actuator

■ BAE 47 PN 63, operated by the electric actuator

■ BAE 47-1 PN 63, operated by the electric actuator

Intermittent valves for manual or automatic and pro- gramme-controlled removing of boiler sludge from land or marine installations, particularly if these installations are operated without constant supervision in accordance with TRD 604.

Sludge sediments, which are accumulated precipitates from boiler water that settle at the bottom of the boiler, will be removed from the steam boiler with the the aid of valves PA and MPA.

These valves give the boiler a short blow at regular intervals, thereby discharging accumulated sludge and sediments.

PA46 and PA47 are designed for manual operation (diaphragm actuator can be retrofitted).

MPA 46 and MPA 47 feature a diaphragm actuator for compressed air or pressurized water.