rubber flue duct expansion joint

Rubber flue duct expansion joints Connectors: An economical integrally flanged design,rubber flue duct expansion joints  is used for applications where there are large movements. The duct connector is manufactured in a W-Design configuration with a minimum of one (1) to two (2) plies of reinforced fabric vulcanized into a homogeneous product that is 3/16", 1/4" or 3/8" thick. The flanges shall be an integral part of the expansion joint.

Rubber flue duct expansion joints  manufactured with a premolded arch. The arch continues through the corner and shall be fully developed when in the neutral position. Listed below are considerations regarding the design of the Style rubber flue duct expansion joints 

Non-metallic duct connectors:ssystem Design Considerations: In designing the rubber flue duct expansion joints, non-metallic duct connector, several considerations must be taken into account to ensure long lasting service.

System Media: The designer and/or requesting party should define the system media to determine the correct elastomer for each application. Evaluation of the gas/air composition should be made during design of the non-metallic fan/duct connector. Abrasion characteristics and external environment conditions should also be taken into account when specifying the fabric element.

System Temperature: The system operating temperature is of primary importance to the design of a non-metallic fan/duct connector, although the system design is generally specified. It is important to distinguish between operating and design as “design” can include a significant safety factor which may result in an upgraded material or design selection.

System Pressure: Normal operating pressures and maximum pressures (positive and negative) under upset conditions should be specified. Combinations of pressures and temperatures should be specifically identified.

Movements: Movements consist of thermal growth resulting from both operating and upset conditions. Individual movements resulting from both conditions should be specified. Maximum installation misalignment should also be taken into account to determine if the non-metallic fan/duct connector design is capable of reacting to a combination of the total maximum movements.

Material:
BB Chlorobutyl 300°
EE EPDM 3/16" 1 300° ±2
HH Hypalon® 225°
NH Neoprene/Hypalon® 1/4" 2 225° ±3
NN Neoprene 212°
NP Neoprene/Buna-N 3/8" 2 212° ±5
VV Viton® 400°