Product Overview
The DN32 Single Sphere Rubber Expansion Joint is a compact and
highly flexible connector designed to absorb vibration, compensate
for thermal expansion, and reduce pipeline noise.
Manufactured according to ANSI 150LB flange standard, this model is
made with high-quality EPDM rubber and galvanized carbon steel
flanges, ensuring excellent durability and corrosion resistance in
various industrial environments.
This small-diameter (DN32, 1¼ inch) expansion joint is widely used
in water supply systems, HVAC pipelines, pump connections, and
industrial fluid transportation where flexibility and leak-proof
performance are essential.
Key Features
High-Performance EPDM Rubber:
Resistant to aging, ozone, acid, alkali, and high temperatures up
to 120 °C, ensuring long service life.
ANSI 150LB Standard Flanges:
Precisely machined and hot-dip galvanized for excellent corrosion
resistance.
Compact Single-Sphere Design:
Allows greater flexibility and movement absorption in a smaller
space.
Effective Vibration & Noise Reduction:
Ideal for pumps, chillers, compressors, and pipelines requiring
stability and low vibration.
Easy Installation & Maintenance:
Lightweight, detachable, and compatible with both steel and PVC
pipe systems.
| Item | Specification |
|---|
| Model | Single Sphere Rubber Expansion Joint |
| Nominal Diameter | DN32 (1¼") |
| Flange Standard | ANSI 150LB |
| Working Pressure | 1.6 MPa (16 bar) |
| Test Pressure | 2.4 MPa |
| Burst Pressure | ≥3.0 MPa |
| Material of Rubber | EPDM |
| Flange Material | Carbon Steel, Hot-Dip Galvanized |
| Working Temperature | -20 °C to +120 °C |
| Suitable Medium | Water, Air, Weak Acid/Alkali, Industrial Fluids |
Applications
The DN32 EPDM rubber expansion joint is commonly installed in:
1.HVAC and chilled water systems
2.Fire protection and water distribution networks
3.Industrial pump and compressor lines
4.Wastewater treatment and chemical plants
5.Building service pipelines and mechanical rooms
Factory Inventory
Installation Instructions
1.Ensure both pipeline flanges are aligned and clean before
installation.
2.Do not over-stretch or twist the rubber joint during
installation.
3.Tighten flange bolts diagonally and evenly to avoid leakage.
4.Avoid contact with sharp objects or high-temperature surfaces.
Pls note:For systems with frequent vibration, use limit rods or
anti-pull devices for safety.
Advantages of Our Factory
20+ years of experience in manufacturing rubber expansion joints.
ISO9001 certified production and full quality control process.
OEM & ODM customization available with short lead time.
Global shipping and professional technical support team.
FAQ
Q1: What is the maximum pressure this DN32 expansion joint can
handle?
A1: The joint can withstand up to 16 bar (232 psi) under standard
working conditions.
Q2: Can this joint be used for hot water or steam?
A2: It’s suitable for hot water up to 120°C, but not recommended
for continuous steam service.
Q3: Is customization available for flange material or rubber type?
A3: Yes, we offer options such as stainless steel flanges and
rubber types like NBR or Neoprene upon request.
Q4: What is the lifespan of this rubber expansion joint?
A4: Under normal working conditions, the service life is typically
5–8 years, depending on temperature, pressure, and medium.
