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Priorclave Information Sheet: Pressure Vessel Construction 16 July 2007 Page1 of 2

Pressure Vessel Construction at Priorclave - 23066 Pressure Vessel Construction at Priorclave

At Priorclave we aim to manufacture as many components as possible ourselvesgiving us close control over quality and manufacturing times.To this end we are an approved manufacturer of Pressure vessels and systems forour autoclaves with our manufacturing processes and designs carefully scrutinisedby Zurich Risk Services Birmingham (Notified Body Number: 0037) against: EC Pressure Equipment Regulations 1999 (European Pressure Vessel Directive –97/23ECConformity Assessment Module D)Construction Code PD5500: 2006 CAT3 In addition to and as part of our approval our manufacturing is carried out under a quality systemapproved under BS EN ISO9001:2000 . The scope of this system includes the category of Boilers andProcess Plant Fabrication. All Pressure vessels manufactured in-house and tested with water to 1.5 times their maximum workingpressure for 30 minutes to check the integrity of all welds and all are subjected to a full test andinspection at working steam pressures.Our pressure vessels are only made from grade 316L stainless steel for its superior corrosion resistanceover other grades.

Cyclindrical Vessels

The vessel shell is precision cut and punched using CNC machinery.It is then rolled and carefully tacked together before thevessel seam weld is carried out using our semi-automatic welding machine. Following this, the precision machinedGrade 316 stainless steel header ring andstainless steel dished end are welded in place.