Double arch rubber expansion bellow by Resistoflex for HVAC piping systems, supplied by RMS Corporation for projects in India and Global shipping.
Rubber Expansion Bellows in a typical pump setup with Spring Isolators for HVAC industries supplied by RMS Corporation

DESIGN

Double Sphere Joints are used exactly as their single sphere counterparts. However, its unique shape and longer length allows greater compression, elongation, lateral and angular movement. This minimizes water hammer, increases noise suppression and dampens hydraulic surge and shock in any system.

The construction combines elastic properties of rubber with nylon cord fabric reinforcement and is integrated with steel Floating Flanges to provide a flexible pipe joint. The Sealing surfaces provide a fluid and gas tight seal.

IDEAL PUMP CONNECTOR

Most widely used world over to protect pumps. It provides the greatest pressure, temperature and movement. Its resiliency helps control pulsation shocks and noise transmission.

ADVANTAGES

  • WIDE FLOWING ARCH – Virtually eliminates sediment build up
  • FLOATING FLANGE – eases Installation
  • COMPENSATES FOR AXIAL, LATERAL TORSIONAL AND , ANGULAR MOVEMENTS – Due to thermal changes & misalignment
  • ISOLATES VIBRATIONS DAMPENS , NOISE AND PRESSURE SURGES
  • SUITABLE FOR SUCTION AND DISCHARGE

APPLICATIONS

For use in Plumbing, & Air systems in:

  • RESIDENTIAL HOUSES
  • COMMERCIAL BUILDINGS
  • INDUSTRIAL PLANTS
  • SEWAGE TREATMENT PLANTS
  • CHEMICAL PLANTS
  • POWER PLANTS
  • MARINE SYSTEMS
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  • Rubber Expansion Bellow with Floating Flanges | Resistoflex

Description

Double Arch Rubber Bellow – Resistoflex Expansion Joints

Overview

Double arch rubber bellows are flexible expansion joints featuring two arches (convolutions) of molded rubber, providing greater movement capacity than single arch designs. Manufactured by Resistoflex, these bellows are ideal for HVAC piping systems, pump connections and industrial applications requiring thermal expansion compensation and vibration isolation.

Features

  • Twin arch design for increased movement capacity
  • High-quality rubber compounds (EPDM, nitrile, neoprene)
  • Reinforced with fabric plies for strength
  • Available with floating flanges
  • Control rods prevent over-extension
  • Wire reinforcement for vacuum applications
  • Proven Resistoflex quality and reliability
  • Available with MS / SS304 / SS316 flanges and accessories

Applications

Double arch rubber bellows are used in:

  • HVAC chilled water and condenser water piping
  • Pump discharge and suction connections
  • Cooling tower piping systems
  • Boiler feed water and condensate return lines
  • Industrial process water and chemical pipelines
  • Fire fighting water systems
  • Building services and MEP piping

Technical Specifications

  • Rubber Materials: EPDM, Nitrile (NBR), Natural Rubber, Neoprene
  • Reinforcement: Nylon or polyester fabric plies
  • Flange Options: Floating BS10 Table D/E, ANSI B16.5 / BS4504  design
  • Size Range: DN25 (1″) to DN600 (24″) and larger
  • Pressure Rating: Up to 25 bar depending on size and construction
  • Temperature Range: -30°C to +70°C (EPDM), higher with special compounds

Benefits

  • Absorbs thermal expansion and contraction
  • Reduces noise and vibration transmission through piping
  • Compensates for piping misalignment
  • Protects pumps and equipment from stress
  • Flexible installation with standard flanges
  • Long service life with proper installation
  • Manufactured by Resistoflex – proven quality

Media Compatibility

  • Water (hot and cold)
  • Steam and condensate
  • Chemicals (consult for specific media)
  • Oils and petroleum products (nitrile rubber)
  • Air and gases

Contact RMS Corporation for Resistoflex double arch rubber bellow selection, sizing and technicalspecifications for your piping system.

 

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