Safety shutoff valves

Full-vacuum chlorinators in accordance with DIN 19606 are designed to a high safety standard. Even if the dosing lines are damaged, no chlorine gas escapes; only ambient air is sucked into the vacuum system. In the event of a fault in the Vacuum regulator, a Safety blowoff valve relieves the pressure in the vacuum system by opening at the slightest overpressure and directing the chlorine gas to the gas detector.

However, if a defective vacuum line and a leaking inlet valve occur at the same time by an unfortunate coincidence, the Safety blowoff valve cannot respond because no overpressure builds up due to the defective vacuum line. The chlorine gas escapes uncontrolled elsewhere. The Safety shutoff valve prevents this and thus ensures the highest possible level of safety for the full-vacuum chlorinator. At the same time, the shut-off valve prevents water from entering the Vacuum regulator in the event of a leaking Ejector non-return valve.
Safety shutoff valves are required by DIN 19606 in all installations in which the Ejector is not located in the chlorine gas room.

Properties & advantages

• Blocks the vacuum line if the Vacuum is too low
• Protects the Vacuum regulator from water from the Ejector