Food Grade Rubber Expansion Double Sphere Bellow Rubber Expansion Joints

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Product Description

Basic Information
Head Code:Round
Thread:Internal Thread
Surface:Hot Galvanized/Light Oil/Black Painting
Material:Carbon Steel/Stainless Steel
Technics:Casting
Warranty:3 Years
Working Pressure:6-40bars (Pn6-Pn40)
Standard:ANSI JIS DIN ASME
Rubber Material:EPDM, Nr, NBR, PTFE, etc
Temperature:-15~+80 ℃ (Special: -30~+150℃)
Product Overview
Rubber Expansion Joint

Double spheres rubber expansion joint is a flexible unit installed in piping systems to absorb vibrations and shock, relieve anchor stress, reduce noise, and compensate for misalignment. It is a pipeline connection with high elasticity, high air tightness, and excellent weather resistance.

Detailed Photos
Detailed View 1
Detailed View 2
Key Features
  • Size Range: 1-1/4" ~ 64"
  • Material: NR/ EPDM/NBR; Flange: Q235, 304, 316
  • Connection: Flanged drilling as ANSI B16.1 Class 125, EN 1092-2 PN16
  • Pressure Rating: PN10/PN16/PN25
  • Surface Treatment: ANSI/AWWA C550
  • Applicable Media: Water, gas, oil, air, sewage, sea water, acid, alkali, etc.
Production & Quality Control
Produce process
Product Parameters

Our products are designed, manufactured, and tested in strict accordance with DIN, BS, ISO, ANSI, API, and JIS standards. We offer custom services including pipe cutting, bending, and threading to meet specific industrial requirements.

Quality Inspection
Factory Testing
Application & Case

Used in all systems conveying fluids under pressure or vacuum at various temperatures. Widely applicable in chemical, construction, water supply, petroleum, refrigeration, fire protection, and electric power projects.

Application Case
Packaging & Shipping
Packaging
Frequently Asked Questions
What is the minimum order quantity (MOQ)?
The minimum purchase volume for mixed products is 4 tons, while single item MOQ can be as low as 1 PCS depending on stock.
What is the standard delivery time?
General orders typically take about 30 days. For urgent orders with existing stock, delivery can be arranged in around 7 days.
Which payment methods are accepted?
We accept various payment terms including TT, L/C, DP, Western Union, and Paypal.
What product certifications do you hold?
Our products carry FM/UL certificates and undergo third-party quality inspections by organizations like SGS and TUV before leaving the factory.
Do you support product customization?
Yes, we support customization for products, packaging, and labels, though certain quantity requirements or mold costs may apply.
What are the available packaging methods?
We offer multiple options including carton packaging, pallet packaging, wooden box packaging, and woven bag packaging.

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