Spherical Design-800, 802, 803

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.

Unasphere Style 800 Style 800

The Unasphere design is inherently stronger than other configurations because of it's 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 WP except 14" which is rated for 115 PSI.

 

Unasphere Style 800 Size, Movement, Pressure, Weight
and Drilling Chart

Size
(in.)

Face-to-Face (in.)

Flange Thickness
(in.)

No. of Holes

Thread Size

 Allowable Movement
Lateral Deflect (in.) Elongation (in.) Compression (in.) Angular Movement (Degrees)
2 6 5/8 4 5/8-11NC ±1/2 3/8 1/2 15
2-1/2 6 11/16 4 5/8-11NC ±1/2 3/8 1/2 15
3 6 11/16 4 5/8-11NC ±1/2 3/8 1/2 15
4 6 11/16 8 5/8-11NC ±1/2 3/8 5/8 15
5 6 13/16 8 3/4-10NC ±1/2 3/8 5/8 15
6 6 7/8 8 3/4-10NC ±1/2 3/8 5/8 15
8 6 7/8 8 3/4-10NC ±1/2 3/8 5/8 15
10 8 15/16 12 7/8-9NC ±3/4 1/2 3/4 15
12 8 15/16 12 7/8-9NC ±3/4 1/2 3/4 15

"Twin-Sphere" Style 802

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° is obtainable with it's highly flexible design. Rated for 225 PSI WP at 170°F. Pressure is reduced at higher temperatures. Vacuum rating to 26" HG.

Size
(in.)

Face-to-Face
(in.)

Compression
(in.)

Elongation
(in.)

Lateral Movement (in.)

Angular Movement (Degrees)

2

7

 .9 .28 .79 30

2-1/2

7

 .9 .28 .79 30

3

7

 .9 .28 .79 30

4

9

 1.32 .45 .98 30

5

9

 1.32 .45 .98 30

6

9

 1.32 .45 .98 30

8

13

 1.78 .58 1.18 30

10

13

 1.78 .58 1.18 30

12

13

 1.78 .58 1.18 30

 

"Twin-sphere" Style 803

This highly capable, low-cost expansion joint is available for smaller diameter Style 803piping 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.

  • Size: 1/2" thru 3"
  • Compression: 3/4"
  • Extension: 1/4"
  • Lateral: 3/4"
  • Angular: 45°
  • Temperature: 250°
  • Operating Pressure: 150 psi
  • Vacuum rating: 15" HG
  • Diameters available in 3/4", 1", 1-1/4", 1-1/2" and 2"

 

Metal Expansion Joints & Connectors | PTFE Expansion Joints| Fabric Expansion Joints | Metal Hose
Unaflex LLC | Tour Our Facilities | Unaflex Products