Flange Stub End Design Information

Fusion machine stub-end holders required for field fusion.
One bolt length is used for each pipe diamter for all DR's. "T" is constant using DR-11 (or lowest available DR by size)
The face diameter fits inside bolt-circle to promote alignment and concentricity while providing a proper seal.
"H" must be long enough to allow butt-fusion in all applicable fusion machines, size on size or larger. Consult fusion machine manufacturers for their required minimum length.
"R" must be matched to the radius of the metal back up ring.
Corrosion protected convoluted Ductile Iron back up rings are recommended.
OD dimensions and tolerances machined in compliance with specifications of ASTM F714.
Flange adapter wall thicknesss is 10% thicker than pipe to accommodate pipe end toe-in and out of roundness, while assuming virtually 100% butt fusion contact.
Stub-ends may be fused to the same DR and to one standard DR higher (i.e., DR-17 to DR-21).

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Oxford Plastics Inc. ~ PO Box 119, Oxford Road 6, Embro, Ontario, CANADA, N0J 1J0
Office: 519.423.6232 ~ Fax: 519.423.6057 ~ Toll Free: 1.800.263.0502