The Severn Trent Services, ASME certified, Model 22255 gas filter is designed to remove gas line impurities that will occur in pressurized chlorine, sulfur dioxide and ammonia pipeline systems.
The Severn Trent Services gas filter is designed to meet the requirements of The American Society of Mechanical Engineers (ASME), Unfired Pressure vessel code section VIII, Div 1, for lethal substances and The Chlorine Institute (Pamphlet 6, Edition 15) recommendations for Class IV gas service covering materials of construction and operating pressures.
The ASME certified gas filter is intended for the filtration of the gaseous phase of Chlorine, Sulfur Dioxide or Ammonia. It is recommended for use on a pressurized gas system with manifolded ton containers, bulk gas supply or downstream of a vaporizer prior to gas line regulators.
The body is fabricated of ASTM Carbon Steel with Class 300 ASTM forged steel large tongue cover flange. A removable 316 SS filter basket, containing three filter pads, is mounted within the filter body to trap the pipeline impurities before they reach the feed equipment.
The filter is constructed with an open volume below the filter elements to trap any liquefied impurities that may have passed through the piping system.