Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
                                                                                                           
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EPDM Flanged Rubber Flexible Joint: Corrosion-Resistant Piping Bellows for Wastewater and Water Treatment Plants

Price Negotiable
Price: US$10.5~52.6/pc
MOQ: 1
Delivery Time: 5--15 working days
Brand: JINGNING
Product Description

EPDM Flanged Rubber Flexible Joint: Corrosion-Resistant Piping Bellows for Wastewater and Water Treatment Plants

Product Description

Navigating the volatile chemical environments of modern municipal water treatment and industrial wastewater management demands infrastructure that refuses to degrade. Tailored precisely for these high-stakes utilities, this premium flanged rubber flexible joint features a specialized, 100% pure EPDM internal liner. This dense, chemically inert core aggressively resists the punishing effects of constant oxidation, heavy ozone dosing, and mild chemical treatments like chlorination and pH-neutralizing acids, preventing the blistering or compounding chemical erosion that ruins standard elastomeric connectors.

Crucially, the joint is engineered with a continuous, ultra-smooth bore that flows seamlessly across the internal arch profile. By eliminating the dead zones and internal pockets found in conventional designs, it effectively prevents turbulent media from dropping sediment, debris, or mineral scaling inside the bellows, maintaining an uninterrupted, low-friction fluid velocity that optimizes pump efficiency. Acting as a secure, long-term chemical isolation barrier, it links rigid plastic, lined-steel, or metallic piping configurations without transferring concentrated stress. It delivers an unyielding, leak-proof transition zone for facilities focused on strict compliance, continuous runtime, and chemical processing safety.

Performance characteristics

  • High-Purity EPDM Chemical Immunity : Utilizes a specialized, non-blistering EPDM inner liner that offers superior resistance to active ozone, harsh oxidation processes, industrial runoffs, and standard water treatment chemicals without structural degradation.

  • Anti-Scaling Smooth-Bore Hydrodynamics : Engineered with a continuous, uniform internal bore that eliminates the deep arch cavity. This prevents the trapping of suspended solids, abrasive silt, or biological slime, maintaining maximum flow velocity and minimum head loss.

  • Multi-Material Pipe Interface Balancing : Serves as an ideal flexible mediator between rigid metallic pipelines and brittle thermoplastic networks (such as PVC, CPVC, or HDPE), absorbing localized thermal expansion before it cracks fragile plastic flange adapters.


Product Specification

Size Length Allowable Movements in Operation
mm inch mm Axial Compression mm Axial Extension
mm

Transverse Movement

mm

Angular Deflection mm
25 1 130/152 20 12 14 15°
32 1 1/4 95/130/152 20 12 14 15°
40 1 1/2 95/130/152 20 12 14 15°
50 2 105/130/152 20 12 14 15°
65 2 1/2 115/130/152 20 12 14 15°
80 3 130/135/152 20 12 14 15°
100 4 130/152 20 12 14 15°
125 5 130/152/165 20 12 14 15°
150 6 130/152/185 20 12 14 15°
200 8 130/152/210 20 12 14 15°
250 10 130/203/230 20 12 14 15°
300 12 130/203/245 25 16 22 15°
350 14 200/255 25 16 22 15°
400 16 200/255 25 16 22 15°
450 18 200/255 25 16 22 15°
500 20 200/255 25 16 22 15°
600 24 260 25 16 22 15°
700 28 260 25 16 22 15°
800 32 260 25 16 22 15°
900 36 260 25 16 22 15°
1000 40 260/300 25 16 24 15°
1100 44 300 25 16 24 15°
1200 48 300 25 16 24 15°

Note: If the medium is oil, acidic or alkaline substances, and there are special requirements for the working temperature, you can customize it by sending a letter or drawing. Please specify when ordering


Product Details

Production Flow

1.Raw material

Top level CR/EPDM/NBR

rubber raw materials,

No recycled rubber

2.Plasticating and mixing

Special Formulation for better Bending with Nylon,For Better Strength,Sealing

3.Workblanks wraping

Cooper plated steel wire reinforcement prevent pull off


4.Vulcanizing

Automatic vulcanization machine ensure vulcanization time and pressure

5.Inspecting
100% strict inspection is to be responsible for consumers

6. Packaging
Protective Packaging for No
Rust and Breakage


Application

Rubber Expansion are widely used in various fields, including construction, chemical industry, shipbuilding, tap water, gas, chemical pipelines, petroleum pipelines, food pipelines, air conditioning pipelines, and sewage treatment.


Our Services

1.24-hour online

2.Free samples provided

3.Support customization

4.Provide drawings

5.Multiple payment styles to choose from

6.Factory inspection (material, specifications, quantity, pressure, packaging)

7.Long warranty period

8.Suitable packaging for transportation


Our Customer


Certificate

FAQ

  • Q: Is this rubber joint safe for drinking water applications?

  • A: Yes, we offer certified food-grade EPDM variants that meet strict drinking water safety standards for public utilities.

  • Q: Can it handle highly concentrated sulfuric acid?

  • A: For strong acids, standard EPDM is not recommended; please contact us for custom Viton or PTFE-lined expansion joints.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
Location Room 1002, Xinghua Building,Zhengzhou City, China
Contact Person Wu

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