A48Y type are used for the equipment and pipeline of the with steam and air etc medium what the
working temperature are less than 350℃. A44Y type are used for the equipment and pipeline of the
with air and petroleum gas medium what the working temperature are less than 300℃. Take for extra
pressure protection Devices.
Flange connecting dimensions of comply with Standard series first and second of JB/T-94 when the
pressure less than 6.4Mpa, comply with Standard series second of JB/T-94 when more than 6.4Mpa.