The filter housings in this photo are fabricated from a high nickel alloy for service at an operating temperature over 700oC. The filter elements are made of porous sintered metal and are cleaned by a shock pulse released by the control valves. The vessel is shrouded by insulating material and stainless steel cladding. The vessels are designed and fabricated to the ASME Code, however they operate at low pressure and are outside the jurisdiction of the ASME Code.
