Product Numbering | Bellofram Diaphragm

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DIAPHRAGM PRODUCT NUMBERING

DIAPHRAGM CLASS – A description of the diaphragm and it’s class.

CYLINDER BORE – Inside diameter of the cylinder into which the diaphragm will fit.

PISTON DIAMETER – Diameter of the piston as measured diametrically across the piston head.

HEIGHT – Height of the diaphragm necessary to obtain a particular stroke.

SIDEWALL THICKNESS – Designation for sidewall (WSW). May also be a group of numbers.

FABRIC – Designation for frabric. May also be a group of numbers or if there is no fabric in the diaphragm, there may be a dash (-) in parentheses.

ELASTOMER – Designation for elastomer. May also be a group of numbers.

TRIM (-1) – Designates special or non-standard trim.