In a model regulated by the ISO 9001 quality system; it should be handled, transported and stored with care. It is vitally important to protect the valve from external and adverse agents such as dirt, humidity and extreme temperatures.
It is important to remember that the valves may be too heavy to be moved manually, which is when suitable fixings should be used for the lifting equipment. It is not advisable to attach them to the delicate parts of the valve such as, for example, adjusting screws.
Other interesting characteristics to mention about this fire protection pressure relief valve are that the interior is manufactured in AISI 316L stainless steel, it has a guided plug to achieve greater stability of the flow, a set pressure that ranges between 0.5 and 20 barg, and is suitable for liquids, gases- from groups 1 and 2- and steam.
Furthermore, to control the set pressure the cap should be unscrewed, the O-ring should be removed carefully and the adjustment stem turned clockwise to increase the set pressure, or anti-clockwise to reduce it.
For these reasons, at Valfonta we always advocate that this valve should be installed by specialist personnel, with sufficient knowledge and experience regarding current regulations, to be able to quickly identify the risks that the entire process may entail. For example, a crucial point lies in ensuring that the valve and actuator never exceed the operating pressure and temperature that they can withhold.