This product has acquired a capacity and quality certification from ASME ("UV" Stamp). It can be used in places where the bellows type cannot be used due to the excessive pressure, or where a large capacity valve is needed but there is not enough space. If can be used where the process requires a detection of pressure in one place while another place requires the outlet of liquids. It is also appropriate for cases where remote control is needed. For leakage, the API STD 527 standard applies.