Triad Bellows Design & Manufacturing Inc.

T-321 stainless steel exhaust flex hose is an economical solution for a flexible connection between the engine and the exhaust piping. Exhaust flex is most commonly used in noncritical applications, such as stand by generators. Our line of Isoflex™ exhaust flex hose assemblies are designed to outperform standard flex assemblies over time. The most common failures with standard exhaust flex assemblies occur at the heat-affected zone, due to annealing that is created by the welding process. Isoflex™ products remove the heat effected zone with spacialized weld techniques. For all critical applications, we recommend the use of our Triad CycleMAX™ multi-ply bellows to insure that your system will function as you intend. Our engineering staff is ready to assist you in choosing the right product for your specific application.

Universal Metal Bellows Expansion Joints are constructed with two metal bellows of equal length separated by a center pipe. This expansion joint design will accept large amounts of lateral offset in multiple planes. The amount of deflection is based on the amount of angulation each bellows can take and the length of the center spool. The designers at Triad Bellows can increase or decrease the lateral deflection capability and cycle life by changing the center pipe length. As with all designs at Triad our universal metal bellows expansion joints are engineered and manufactured in strict accordance with EJMA 10th Edition. Standard universal metal expansion joints do not use tie rods and require the system piping to be properly anchored.

Unlike any of the In-Line Pressure balanced Expansion joints, serving only straight pipe lines where lateral deflection MUST be eliminated, 90º Elbow Pressure Balanced Joints can absorb both axial compression and lateral offset. This expansion joint is similar to the tied universal expansion joint with a balancing bellows that almost totally eliminates the pressure thrust on the anchors. This metal expansion joint design is recognized and recommended by the Expansion Joint Manufacturers Association.

The In-Line Pressure Balanced Metal Bellows Expansion Joint is used in a straight piping run to absorb axial movement with minimal thrust forces imposed on the system anchors. Each In-Line Pressure Balanced Expansion Joint is specifically designed for specific pressure, temperature and axial compression rating. The most common fitting configurations are flanges or beveled weld ends. As with all metal expansion joints that Triad manufactures your expansion joint order will be 100% leak tested.

Externally Pressurized Expansion Joints are the perfect choice for large amounts of axial compression or extension. Triad Bellows can design externally pressurized metal bellows expansion joints with over 18” total axial movement capability. Other benefits of an externally pressurized expansion joint is that they have a built in guiding system eliminating the need for the first pipe guide in a piping run. For steam applications, where usually a flow liner is required, externally pressurized expansion joint, due to its construction eliminates this requirement. This type of metal expansion joint also incorporates an outer casing to contain the pressure which also protects the metal bellows from damage.

Tie Rod Bellows Pump Connectors are almost always constructed with multi-ply bellows that will stand up to the pump vibration. This style expansion joint is usually very short and has limited movement capability. Triad Bellows manufactures metal bellows pump connectors that are made with domestic materials that meet AIS, Buy America and Buy American requirements.