January — 2013 — The Expansion Joints Blog

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Archive for January, 2013

Single Ply Splice for Fabric Expansion Joint Material

January 26th, 2013 Comments off

Install the FLEXXCEL HT belt material on the expansion joint frames per the BELT INSTALLATION INSTRUCTIONS. Leave section on top of duct “unbolted” at preferred splice area. Carefully trim FLEXXCEL HT belt material so the two ends “butt up” with each other.

HT Composite Belt Splice HT Composite Belt Layers

Cut PFA film and 3″ wide FLEXXCEL material strip to equal the width of the installed belt. Staple the PFA film to the “gas side” of the FLEXXCEL material strip.

 

HT Composite Belt Splice

Slide the backer board under the splice area. Place the FLEXXCEL material strip over the “trimmed” HT material with the PFA film facing down. Place iron at edge of belt to begin splice. Apply pressure to iron handles during each splice. Each splice section should take approximately 5 minutes.

 

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Pressure Balanced Tee Expansion Joint Designed for a Boiler Feed Pump Turbine Exhaust

January 20th, 2013 Comments off

Pressure Balanced Tee Expansion Joint Designed for a Boiler Feed Pump Turbine Exhaust

This pressure balanced tee expansion joint was custom designed for a boiler feed pump turbine exhaust in a power plant. It is 96″ Dia. x 288″ OAL and fabricated from carbon steel with 304 stainless steel bellows, turning vanes and liners. It is designed for 2″ axial movement at 315°F and 15 psig. The expansion joint was dye penetrant examined, and a chemical cleaning of the interior surfaces was performed to remove any oil and grease. U.S. Bellows also performed a pneumatic test at 23 psig.

36″ Dia. Tied Universal Expansion Joint with Stainless Steel Bellows

January 5th, 2013 Comments off

36" Dia. Tied Universal Expansion Joint with SS Bellows

This tied universal expansion joint is 36″ Dia. x 47-3/8″ OAL and is fabricated from carbon steel with stainless steel bellows. It is designed for 1/2″ lateral movement, 3,116 lb./in. lateral spring rate at 200°F and 100 psig. The expansion joint was dye penetrant examined and hydrotested prior to shipment.

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