American Power Conference

MERCER IS PROUD TO REPRINT OUR PAPER PRESENTED AT APC AND PUBLISHED IN: Proceedings of the AMERICAN POWER CONFERENCE Volume 59 – II 59th Annual Meeting Chicago Sponsored by Illinois Institute of Technology Chicago, Illinois NEW DESIGN FEATURES IN PIPING EXPANSION JOINTS Mercer Rubber Company 350 Rabro Drive Hauppauge, NY 11788 Elastomeric (rubber) expansion joints…

Pumps & Systems

Applying Expansion Joints to Your System Understanding your piping system requirements and basic expansion joint functions are keys to achieving optimal performance. Elastomeric expansion joints serve many functions in modern piping systems. They offer significant advantages over alternatives such as metallic expansion joints or expansion loops. Unfortunately, rubber expansion joints are often misapplied. Design and…

Power Plant Pressure Balance Application

Mercer’s Style 501 96” diameter expansion joint employed in a pressure balance configuration in a Malaysian power plant. Pressure balance configurations are used in unique applications. As the name implies, its function is to balance, or cancel out, the internal working pressure in order to minimize the net end loads acting on adjacent piping or…

Cooling Tower Applications

Featured on this page: Mercer Rubber Company’s Expansion Joints as employed on Hamon’s Wet/Dry Cooling Towers for a Northeast Utility. Expansion Joint Applications and Advantages Accepts all directional thermal movements, minimizing pipe stresses and offering untold cost benefits as compared with the additional material and space required for expansion loops. Dampens noise and vibration caused…

Case History

Viton® Provides Highest Reliability in Contact with Gaseous Chlorine, Acids and Abrasive Slurries Flexible expansion joints in critical process streams resist attack from chemicals, heat and mechanical abuse. Viton assures a long, maintenance-free service life. Producing titanium dioxide (TiO2) — the brilliant white pigment used in paint, paper and a host of other products —…

World Standard Flange Dimensions

These tables have been prepared in an effort to familiarize engineers with some of the world standards and American equivalents. In a few cases, dimensions will differ from these tables, particularly in sizes over 48”. It is safest to work from certified prints before fabricating mating rubber or metal flanges. Thicknesses are omitted because of…

Expansion Joints Install Procedures

EXPANSION JOINT INSTALLATION PROCEDURES 1. Do not weld near any rubber expansion joint or weld the mating flanges with the expansion joint in place. There is the possibility of fire, spark or heat damage. 2. All pipe lines should be properly supported so that the expansion joints do not carry the pipe load. 3. a.…

Comparison of Tire Cord & Elastomeric

A Comparison Of Tire Cord and Elastomeric Materials Used in Spherical and Other Style Expansion Joints NOTE: At 250°F, there is no significant change in Kevlar Breaking Strength, Table 1; Modulus, Table 2; or Aging Properties, Table 3c. ElastomersNatural RubberEPDMNeoprene®Hypalon®ChloroButylNitrile Tensile Strength Carbon Black ReinforcementOver 3000 psi (2122 kg/cm2)Over 3000 psi (2122 kg/cm2)Over 3000 psi…

Chemical Resistance Guide

MERCER Elastomer Chemical Resistance Guide This guide is designed as an aid in selecting common elastomers used to conduct some of the many types of materials found in industry. Improper selection of tube and/or cover materials can result in decreased service life, or complete failure of the expansion joint. For example, Natural Rubber is an…