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DN500 SS304 Flange Type Sewage Rubber Duckbill Check Valve with SS316 Flange and Clamp Connection

DN500 Duckbill Check Valve

SS304 Flange Duckbill Check Valve

SS316 Flange Rubber Duckbill Valve

Place of Origin:

China

Brand Name:

JINGNING

Certification:

Model Number:

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DN500 SS304 Flange Type Sewage Rubber Duckbill Check Valve with SS316 Flange and Clamp Connection

Product Details

Size:

DN500

Certificate:

ISO9001,CE，ZTC

OEM:

Support, 20Years' Experience

Color:

Black

Company Type:

Manufacturer

Flange Material:

Carbon Steel, SS304, SS316

Key Words:

Bellows Piping

Name:

Flange Type Sewage Rubber Duckbill Check Valve Clamp Connected Bellows Piping

Payment & Shipping Terms

Minimum Order Quantity

Price

$10~$98/pc

Packaging Details

Wooden Box

Delivery Time

5-8 work days

Payment Terms

L/C,D/A,D/P,Western Union,T/T,MoneyGram

Supply Ability

5000 Sets/Week

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86-150-93112546

joints@chnflex.com

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Product Description

Flange Type Sewage Rubber Duckbill Check Valve Clamp Connected Bellows Piping

A Flange Type Sewage Rubber Duckbill Check Valve with Clamp-Connected Bellows Piping is a robust, maintenance-free backflow prevention solution designed for sewage, drainage, and industrial wastewater systems. The flange-end duckbill check valve allows forward flow with minimal pressure and automatically seals when reverse pressure occurs, ensuring reliable one-way operation. Integrated with a clamp-connected rubber bellows section, the unit effectively absorbs vibration, reduces noise, and compensates for thermal expansion, misalignment, and pipe movement. This combined structure offers excellent corrosion resistance, long service life, and easy installation, making it ideal for municipal engineering, treatment plants, pump stations, and harsh fluid-handling environments where flexibility and reliable backflow control are essential.

Features & Benefits

100% full rubber structure that meets various anti-corrosion requirements (different rubber materials available)
No blockage with excellent sealing capability
Long service life with no faults and maintenance-free operation
No moving parts, mechanical components, electric signals, or manual operation required
Minimal opening pressure (can open with water head > 0.01M)
Minimizes head loss in most applications
Flexible installation options to meet customer requirements
Convenient installation with low cost and operational expenses

Technical Specifications

Pipe Size ID	Length	Height	Flange Outside Diameter
DN50 (NPS 2)	150mm	100mm	150mm
DN80 (NPS 3)	220mm	140mm	200mm
DN100 (NPS 4)	250mm	200mm	225mm
DN150 (NPS 6)	340mm	265mm	275mm
DN200 (NPS 8)	420mm	325mm	338mm
DN250 (NPS 10)	520mm	425mm	400mm
DN300 (NPS 12)	620mm	525mm	485mm
DN350 (NPS 14)	700mm	625mm	525mm
DN400 (NPS 16)	800mm	725mm	588mm
DN450 (NPS 18)	900mm	825mm	625mm
DN500 (NPS 20)	980mm	925mm	688mm
DN600 (NPS 24)	1120mm	1025mm	800mm

Note: Custom specifications available upon request with provided drawings and standards.

Product Advantages

Competitive factory pricing
17 years manufacturing experience with 5 years export experience
Strict quality control exceeding industry standards
Custom mold support for OEM requirements
Free samples available
Large inventory for quick delivery

Applications

The integrated flange and duckbill check valve design provides easy installation. The all-rubber construction prevents blockage and jamming while allowing solid particles to pass through smoothly. Ideal for:

Waterproof systems
Drainage systems
Pump outlets
Lifting pump stations
Submerged aeration systems

Our Services

24-hour customer support
Free samples available
Customization services
Technical drawings provided
Multiple payment options
Factory quality inspections
Extended warranty period
Secure transportation packaging

Frequently Asked Questions

Q: Can we get a sample?

A: Yes, we provide samples for quality testing.

Q: Are the flanges galvanized?

A: Yes, we offer both electronic and hot dip galvanized flanges, as well as painted options.

Q: Can the product be marked with our logo?

A: Yes, we provide OEM/ODM services including custom branding.

Q: Can you provide product drawings?

A: Yes, technical drawings are available upon request.

Tags：

DN500 SS304 Flange Type Sewage Rubber Duckbill Check Valve with SS316 Flange and Clamp Connection

DN500 Duckbill Check Valve

SS304 Flange Duckbill Check Valve

SS316 Flange Rubber Duckbill Valve

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Corrosion Resistant Maintenance Free Duckbill Check Valve with ZTC Certification for Waterproof Systems

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ISO9001 Certified DN350 Rubber Bellow with Flange Sewage Duckbill Check Valve with 18months Warranty and 20Years' Experience

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