Available from Advance Products & Systems, Inc.
IsoJoint is a true monolithic isolating joint. The most up-to-date, patented joint on the market, IsoJoint does not depend on the use of isolating sleeves and washers for bolts nor isolating gaskets or O-rings between flanges. Why? These isolating gasket kits require a critical, even surface to provide regular and variable crushing and must be maintained over the life of the insulator. External pressure, causing an uneven load on the flange area, can result in loss of isolating properties as well as the transported fluid.
IsoJoint employs one or more, preassembled pressure seals and the isolating rings. Unlike isolating gasket kits, IsoJoint does not depend on installer's actual fitting of the joint's isolating gasket, sleeves and washers and the possible loss or damage to any one of the number of these materials which would result in complete breakdown of the isolated flange. One lost or damaged part will render these flanges useless. The monobloc design of the IsoJoint allows the joint to be welded into place as one piece, virtually eliminating any field problems. Unless a meticulous on-site assembly and over-wrapping is undertaken in the installation of the isolating gasket kits, gradual penetration of moisture will erode the electrical resistance. This problem, along with the others listed above, make inspection and maintenance necessary.