Rubber Expansion Joints

UNASPHERE STYLE 800
 Rubber Expansion Joints

 The Unasphere is precision molded of neoprene and nylon. It requires less force to move than conventional expansion joints allowing maximum deflection, elongation, and compression. The Unasphere will minimize water hammer or hydraulic shock in any system. #150 ASA drilled flanges.

 Strength and Efficiency. The Unasphere design is inherently stronger than other configurations because of its spherical shape. Pressure exerts itself evenly in all directions and so distributes the forces evenly over a large area. The streamlined, flowing arch reduces turbulence and allows smooth, quiet flow. Sediment cannot build up; therefore there is no need to fill the arch and thus restrict its movements. All Joints rated for 26"hg vacuum and 225 psi w.p. except 14"which is rated for 115 psi.

Available to 24" diameter

UNASPHERE STYLE 800     -      Rubber Expansion Joints

Size, Movement, Pressure, Weight and Drilling Chart

UNASPHERE STYLE 802 

Available to 20" Diameter
The twin-sphere 802 comes with steel 150lb. ASA drilled flanges, which float to provide easy installation and center root ring to meet PSI shown.

The twin-sphere is precision molded of neoprene and nylon tire cord. The double arch design allows for greater movement four different ways and provides a non-turbulent flow. Angular movement up to 30 degrees is obtainable with it's highly flexible design. Rated for 225 psi wp at 170ºF. Pressure is reduced at higher temperatures. Vacuum Rating to 26" HG

UNASPHERE STYLE 803 

This highly capable, low cost expansion joint is available for smaller diameter piping systems found in power plants, chemical plants, waterworks, sewerage residences, etc. The Twin-Sphere provides excellent vibration absorption and stress relief in light, compact construction.

Operating Pressure: 150 PSI. Vacuum Rating: 15"HG Diameters are available in 3/4", 1", 1-1/4", 1-1/2",
and 2".