Single Sphere 301 Series

Rubber Expansion Joint: Single Sphere 301 Series

Available Materials

EFP Code Cover Elastomer Tube Elastomer Max Operating Temp.
EE EPDM EPDM 250°F
NN Neoprene Neoprene 225°F
NP Neoprene Nitrile 212°F
BB Chlorobutyl Chlorobutyl 250°F

All Products are reinforced with Nylon Tire Cord.

Dimensions Flange Drilling Motion Ratings Operating Conditions Approx. Weights
Nominal Pipe Size F-Length of Joint G-Flange Thickness A-Flange O.D. Flange Bolt Hole Circle Number & Hole Size Axial Compression Axial Extension Lateral Deflection Angular Movements Pressure Rating (PSIG @ 170°F) Vacuum Rating (In/Hg) Expansion Joint (lbs) Control 2-Rod Set Total Approx. weight (lbs)
1" 6" 0.55" 4.25" 3.13" 4 - 0.62" 0.5" 0.375" 0.5" 37° 225 26 3.8 3.3 7.1
1.25" 6" 0.55" 4.63" 3.5" 4 - 0.62" 0.5" 0.375" 0.5" 31° 225 26 5 3.3 8.3
1.5" 6" 0.55" 5 3.88" 4 - 0.62" 0.5" 0.375" 0.5" 27° 225 26 6.1 4.6 10.7
2" 6" 0.63" 6" 4.75" 4 - 0.75" 0.5" 0.375" 0.5" 20° 225 26 12.3 7.6 19.9
2.5" 6" 0.71" 7" 5.5" 4 - 0.75" 0.5" 0.375" 0.5" 17° 225 26 12.3 7.6 19.9
3" 6" 0.71" 7.5" 6" 4 - 0.75" 0.5" 0.375" 0.5" 14° 225 26 14 8.3 22.3
3.5" 6" 0.71" 8.5" 7" 8 - 0.75" 0.5" 0.375" 0.5" 14° 225 26 17.6 7.4 25
4" 6" 0.71" 9" 7.5" 8 - 0.75" 0.75" 0.5" 0.5" 14° 225 26 18.3 7.4 25.7
5" 6" 0.79" 10 8.5" 8 - 0.88" 0.75" 0.5" 0.5" 11° 225 26 22.8 8.3 31.1
6" 6" 0.87" 11" 9.5" 8 - 0.88" 0.75" 0.5" 0.5" 225 26 26.8 10.4 37.2
8" 6" 0.87" 13.5" 11.75" 8 - 0.88" 0.75" 0.5" 0.5" 225 26 40.6 13.4 54
10" 8" 0.95" 16" 14.25" 12 - 1" 1" 0.625" 0.75" 225 26 56.6 21.3 77.9
12" 8" 0.95" 19" 17" 12 - 1" 1" 0.625" 0.625" 225 26 83 27 110
14" 8" 1.07" 21" 18.75" 12 - 1.13" 1" 0.625" 0.75" 150 26 115 28 143
16" 8" 1.10" 23.5" 21.25" 16 -1.13" 1" 0.625" 0.75" 125 26 165 26.8 191.8
18" 8" 1.18" 25" 22.75" 16 -1.25" 1" 0.625" 0.75" 125 26 168 31.4 199.4
20" 8" 1.18" 27.5" 25" 20 - 1.25" 1" 0.625" 0.75" 125 26 170 32.4 202.4
24" 10" 1.18" 32.06" 29.5" 20 - 1.36" 1" 0.625" 0.75" 3" 110 26 255 45.5 300.5
30" 10" 1.26" 38.75" 36" 28 - 1.36" 1" 0.625" 0.75" 110 26 295 57 352
Control Units/Unanchored
Control Units must be installed when pressures (test • design • operating) exceed rating below:
Pipe Size Series 301 P.S.I.G. Series 302 P.S.I.G.
1" thru 4" 180 135
5" thru 10" 135 135
12" thru 14" 90 90
16" thru 24" 45 45
30" 35 35
Maximum Surge or Test Pressure of the System
Nominal Pipe Size Expansion Joint I.D. Inch/(mm) Number of Control Rods Recommended
2 4 6 8
1 (25) 949
1.25 (32) 830
1.5 (40) 510
2 (50) 661
2.5 (65) 529
3 (75) 441
4 (100) 311 622
5 (125) 235 470
6 (150) 186 371
8 (200) 163 326
10 (250) 163 325 488
12 (300) 160 320 481
14 (350) 112 223 335
16 (400) 113 227 340 453
18 (450) 94 187 281 375
20 (500) 79 158 236 315
24 (600) 74 147 221 294
30 (750) 70 141 211 281

301 Series

The Single Sphere joint/flexible connector provides up to 225 PSI and temperatures up to 230° F*! It protects your pumps and piping system from changes in temperature and pressure, while reducing vibration.
An extremely economical and resilient expansion joint/connector, the Single Sphere also helps control pulsation shocks and noise transmission. Its spherical shape reduces the force exerted on pipe lines and equipment.
It has a self-cleaning arch and solid plate flanges that are tapped or drilled to mate with 150# or 300# companion flanges. Flanges can be rotated for easy installation and grip the sealing area for an extremely tight connection.
Constructed of neoprene and nylon, it has bias-ply tire cord for strength, and is molded into a dense, uniform body. Other materials are also available. Refer to the charts below.
EPDM body with 150# drilled flanges provides up to 225 PSI and temperatures up to 230° F*.
Neoprene body with 150# drilled flanges provides up to 225 PSI and temperatures up to 230° F*.
Butyl body with 150# drilled flanges provides up to 225 PSI and temperatures up to 230° F*.
Nitrile body with 150# drilled flanges provides up to 225 PSI and temperatures up to 230° F*.

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