Page 3055 - Flipbook_SolidDesignSoutheast2020

SWEEP ELBOWS
SHORT RADIUS
69 William Street, Belleville, NJ 07109 Sale Technical Sheet
PH: 973-759-4600 * Fax: 973-759-6449 STS Number ________
EMAIL: info@vac-u-max.com Effective Date _______
WEB SITE: www.vac-u-max.com Supersedes _________
D. SWEEP ELBOWS - SPECIAL SHORT-RADIUS ELBOW DESIGNS

Several specialty short-radius elbows are available,
primarily for abrasive products. They typically have a
liner or a wear-plate insert in the primary impact area. If
that wears through, only the liner or wear plate needs to
be replaced, not the entire elbow. Variations with
different angles are available.

Advantages. Like the standard elbows, these styles
are available in almost all materials and sizes and with
different angles. They require less space for installation
than standard long radius elbows. And, because only
the wear plate or liner needs to be replaced in case of
wear-through, replacements costs are lower.

Disadvantages. Like standard elbows, these require internal surface treatment for handling abrasive
products, their multiple impact zones can cause fragile products to degrade, pellets or granular products
generate high noise levels, and intense exposure of head-sensitive product to the elbow walls can cause
the product to smear and build up inside the elbow. Changes in the elbow’s cross-sectional area cause
higher pressure losses and dead corners raise product contamination issues. Recommended
applications include the handling of powders or pellets that are moderately abrasive, have high melting
points, and are not fragile. They are suitable for dilute-phase pellet and powder systems, but only for
powders in dense-phase systems.

CERAMIC-LINED ELBOWS
Ceramic-lined bends have a uniform coating of a specially formu-
lated ceramic material that is added to the inside diameter of the
bend to give it a very hard, slippery, glass-like surface. The hard-
ness of the ceramic coating is between 5 and 6 on the Mohs Scale -
as hard as glass and just as smooth. The exterior of the bend has
the appearance of annealed steel and can be easily painted.

The "CERAM-BACK-ELBOW"TM has a jacket
across the back of the core elbow which is approxi-
mately 1/2" of ceramic compound. This compound
has a Mohs hardness of 9+, second only to diamond
which has a Mohs hardness of 10. The ceramic jacket
and core elbow is then wrapped with an exterior
material to maintain the hoop strength. Once the
ceramic compound has been applied, it receives a
finished coat of paint.
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FOR REFERENCE ONLY