J-11 Reducing Expansion

Product catalog summary

Control Rod Configuration and J-11 Expansion Joints Overview
The J-11 Expansion Joints are designed to connect pipes of unequal sizes, absorb thermal expansion and contraction, eliminate vibration and noise, and are noncorrosive and shock resistant. These joints are manufactured in the U.S.A.

Materials of Construction

Elastomers: Includes Pure Gum Rubber, Neoprene, Hypalon®, Chlorobutyl, Buna-N, EPDM, and Viton®.
Control Rods and Retaining Rings: Made from Galvanized Steel and Stainless Steel.

Pressure and Vacuum Ratings

Working Pressure: Standard pressure rating is 50 psi, with a high-pressure rating of 75 psi.
Vacuum Rating: 15 in. Hg, with full vacuum available.

Product Features and Applications
The Red Valve Company’s J-11 Eccentric Reducer offers the benefits of the Redflex® Expansion Joint line, allowing for the connection of unequal pipe sizes. These reducers can function as pipe reducers or increasers, expansion joints, flexible connectors, and vibration eliminators. They are designed to replace metal reducers in pipelines and are available in single, double, and triple arches, in either open or filled models. Filled reducers are particularly useful in slurry and abrasive applications to prevent material collection.

The J-11 Reducers help eliminate noise, isolate vibration, reduce stress, eliminate electrolysis, and protect against start-up surges. They save installation space and reduce costs. The reducers are available in various elastomers to ensure chemical compatibility and temperature suitability for the process fluid.

Installation Considerations
Piping systems must be anchored when using eccentric reducers. Standard control rods cannot prevent overextension or elongation, especially in larger diameters over 12 inches. Special design control rods with backup plates may be required.

Dimensions and Movement Capabilities
The document provides detailed dimensions and movement capabilities for J-11 Eccentric Reducers, including axial compression and extension, lateral deflection, angular deflection, and torsion factors for both open and filled arch models. Specific sizes and configurations are available, and for custom sizes or longer face-to-face dimensions, consultation with the factory is recommended.

Catalog excerpts

Connects unequal pipe sizes Absorbs thermal expansion and contraction Eliminates vibration and noise Noncorrosive Shock resistant Made in U.S.A. Red Valve Company’s J-11 Eccentric Reducer provides all of the benefits of Redflex® Expansion Joint line with the ability to mate unequal size pipes. Red Valve Company’s J-11 Eccentric Reducers can be used as pipe reducers or increasers, expansion joints, flexible connectors and vibration eliminators. These tapers were designed to replace metal reducers in the pipeline. They are available in single, double, and triple arches, in either open or filled models. The multiple arches are used in applications where expansion or contraction will occur. The advantage to the all-rubber J-11 Reducers over metal reducers is the flexibility and durability of the elastomer. Filled reducers are usually used on slurry and abrasive applications to prevent the collection of material which can settle in the arches. The Redflex® J-11 Eccentric Reducer eliminates noise and isolates vibration in the pipeline, reduces stress, eliminates electrolysis and protects against start-up surges. Eccentric reducers save installation space and reduce costs. Materials of Construction Ǡ ELASTOMERS Pure Gum Rubber, Neoprene, Hypalon®, Chlorobutyl, Buna-N, EPDM, and Viton® Ǡ CONTROL RODS AND RETAINING RINGS Galvanized Steel, Stainless Steel Ǡ WORKING PRESSURE Standard pressure rating: 50 psi High pressure rating: 75 psi Ǡ VACUUM RATING 15 in. Hg Full vacuum available Red Valve Company manufactures eccentric reducers to meet your exact piping needs. A complete chart of standard dimensions are listed on the next page. The flanges are designed to meet ANSI Class 125 drilling. J-11 Reducers are available in a variety of elastomers to satisfy the chemical compatibility and temperature of the process fluid. Piping systems must be anchored when using eccentric reducers. Standard control rods cannot be used to prevent overextension or elongation. This is particularly of concern in larger diameter sizes, over 12”, where the smaller end joint control rods have a lever effect. Special design control rods with backup plates may need to be engineered.

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