Heat accumulators, steam accumulators, pressure hot water tanks, regulating and safety accessories for water filtering apparatus in the nature of swimming pools, bathtubs and spa baths, water intake apparatus in the nature of swimming pools, bathtubs and spa baths, water flushing installations and apparatus in the nature of swimming pools, bathtubs and spa baths, water filtering apparatus, apparatus and machines for purifying water, water heaters, water sterilizers, installations for purifyin...