The R250D lever ball valve has been carefully designed and tested in order to offer a products of high quality,
having safety features over and above most other ball valves making it extremely difficult to beat.
One particular feature is the assembly of the operating stem. Most ball valves have the stem assembled from the
outside (this kind of design is forbidden in many countries, especially if the valve is being used with dangerous
fluids such as natural or town gas).
For obvious safety reasons the stem of the Giacomini valve is assembled from the inside of the valve thus
protecting it from vandalism or sabotage.The stem is held secure by a special antifriction washer. It cannot be
withdrawn and judging by experiences throughout the world it is a safe and sound precaution recommended
when used in domestic premises.The valve has been designed so that loss of pressure is minimal however a
graph in available for each size of valve. Developed following full and comprehensive laboratory tests our valves
comply with the requirements of international Standard Institutes.