Remember - 70% of all industrial accidents are due to HUMAN ERROR.

For efficient operation of Boilers, frequent 'bottom blow-down' procedures are necessary to remove sludge deposits from within the vessel.

Sludge may form from dirt in the water supply or from the water
treatment chemicals. Where blow-down is achieved through manual valves, a safety interlock system must be implemented to ensure that only one boiler blow-down may be carried out at a time.

Such a system complies with the Health & Safety Commission, Safety of pressure systems "Approved Code of Practice".

For these applications SFC provide a positive mechanical safety system that interlocks each boiler blowdown valve whereby only one valve may be opened at any one time.

Each blowdown valve incorporates a valve interlock. During normal operation the valve interlock locks the valve in the closed position.

Under these circumstances, the valve can only be opened under controlled conditions.