Here is a little example of how we can optimise your sootblower!

The purpose of the air vent is to let fresh air into the inside of the blower. In the resting position, the vacuum in the boiler draws in fresh air via the ventilation valve through the inner tube and blowpipe.

If the ventilation valve is defective and remains stuck in the closed position, corrosive flue gases can penetrate. Water then often collects inside the blower, which condenses from the residual steam when the blower has finished blowing. In combination with flue gases, severe corrosion damage can occur.

If the ventilation valve is defective and gets stuck in the open state, this can even lead to personal injury if people are in the outlet area of the valve, for example when a runner is inspecting the system.

If a sealing air duct is installed, it will be affected by significant corrosion in the medium term. If a blower has a sealing air blower, the steam can damage it.

In a Detox system, a stuck vent valve can also cause sluggishness, as the sulphurous gases can form crystalline structures with the condensed steam. These often build up massively on and in the stuffing box packing, which can lead to the truss blower becoming stuck. The truss blower can then only be made passable with more work involved.

Ventilation valves are often so tightly seated in the housing that their thread is irreparably damaged. In most cases, the steam valve housing can be repaired, but the ventilation valve cannot always be repaired.

Even if a ventilation valve can be removed, an overhaul does not always make sense. It must be disassembled into its components, these must be sandblasted and then the thread must be reworked. Finally, the seat has to be reground, which takes the most time. Therefore, many of our customers want to replace the valves due to cost reasons.

The only thing that helped here was the massive use of heat and force to remove a stuck ventilation valve.

• Higher stability
• Improved flow

• More surface for the spanner to grip
• Transmission of higher torque for stuck ventilation valves
• Better fitting after a longer operating time

• Reduction of reaction time
• Minimisation of the amount of steam escaping during operation

• Bevelling of the flat seat and thus automatic centring of the sealing surface
• Service life increase