ANSI Standard Flange Rubber Expansion Joint Shock Absorber for Pipeline

The single-ball rubber joint is a highly elastic and airtight pipe connection component. It consists of a rubber ball with an inner rubber layer, a reinforcement layer, and an outer rubber layer, and a loose metal flange.

It is widely used in various piping systems, effectively absorbing vibration and noise, compensating for thermal expansion and contraction caused by temperature changes, and allowing a certain degree of deflection.

Rubber Material Selection Guide

Natural Rubber (NR): Suitable for ordinary water and air media, temperature range -20°C to +80°C

Ethylene Propylene Diene Monomer (EPDM): High-temperature and ozone-resistant, suitable for hot water and steam media

Nitrile Butadiene Rubber (NBR): Excellent oil resistance, suitable for oil-based media

Chloroprene Rubber (CR): Excellent weather resistance, suitable for outdoor environments

Application Scenario Details

Chemical Piping Systems
In acid and alkaline media transport pipelines, a Teflon-coated lining design, combined with corrosion-resistant rubber, effectively resists chemical corrosion. After use at a Guangxi chemical company, pipeline leakage rates were reduced by 95%.

HVAC Systems
EPDM connectors, designed specifically for high-temperature hot water, have operated continuously in an 85°C circulating hot water system for three years without signs of aging. The vibration-damping effect reduces pump noise by 15 decibels.

Water Supply and Drainage Engineering
Large-diameter DN1200 connectors are used in urban water supply systems, successfully compensating for 25mm displacement caused by foundation settlement and preventing pipe ruptures.

Professional Installation Steps
Pre-installation Inspection: Confirm that the flange sealing surface is flat and undamaged, and that the bolt holes are aligned.

Precise Positioning: Use a dedicated positioning tool to ensure concentricity between the joint and the pipe.

Stepped Tightening: Tighten the bolts in three steps using a crisscross pattern.

Pressure Test: First, perform a static pressure test at 1.5 times the working pressure, maintaining pressure for 30 minutes.

Maintenance Recommendations
Monthly check for surface degradation

Quarterly check bolt tightness

Perform a comprehensive inspection annually

Create a maintenance log to record equipment usage

Testing Standards
All products undergo the following before shipment:

Airtightness test: 1.5 times the working pressure for 10 minutes

Vacuum test: -0.09 MPa for 5 minutes

Displacement performance test: Fatigue test simulating actual working conditions

Material analysis: Spectroscopic analysis of rubber components to ensure compliance with standards

Solutions to Common Problems
Problem 1: Leakage after installation
Solution: Check the flange sealing surface for flatness and re-tighten the bolts in a crisscross pattern.

Problem 2: Cracks develop during use
Solution: Verify the medium temperature exceeds the rubber tolerance and replace the connector with a high-temperature-resistant material.

Problem 3: Pull-out prevention device inoperative
Solution: Check the stop bolts for looseness and readjust the stop distance.

Contact us now: Our technical team is ready to provide you with professional pipe connection solutions.
Ordering Information: Standard products ship within 3 days, special sizes within 7-15 days.
Global Shipping: We support various shipping methods, including sea and air freight.

The company adheres to the business philosophy of "customer satisfaction is our first duty, all employees are responsible for creating quality, continuous improvement sets new heights, honest service builds reputation", and wholeheartedly provides high-quality products and professional services to new and old customers.

The factory mainly produces rubber expansion joints, duckbill check valves, dismantling joint, bellow expansion joints, compensators, repair clamp, 02S404 national standard waterproof casings, gate valves ,butterfly valves etc; and all products have passed ISO 9001:2015 quality management system certification; adopting national and industry standards, advanced manufacturing technology, strong R&D and manufacturing capabilities, they are widely used in water supply, drainage, electricity, chemical industry, gas, metallurgy, urban construction and environmental protection and other pipeline industries.