SS304 Duckbill Check Valve DN100 Corrosion-Resistant Nitrile Rubber Flanged Sewage Valve

Durable SS304 duckbill check valve with nitrile rubber , DN100 size. Corrosion-resistant, maintenance-free, and ideal for sewage discharge, wastewater treatment, and port applications.

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Product Overview

The SS304 Duckbill Check Valve is a high-performance backflow prevention solution for sewage and wastewater systems. Designed with a stainless-steel SS304 body and a nitrile rubber lining, it provides excellent corrosion resistance, flexible installation, and long-term durability.

This valve operates without moving parts, making it highly reliable and maintenance-free—perfect for harsh environments such as sewage discharge, wastewater treatment plants, and industrial drainage systems.

Key Features

1. High Corrosion Resistance – SS304 stainless steel + nitrile rubber construction

2. No Moving Parts – reliable, low-risk operation

3. Long Service Life – maintenance-free and cost-effective

4. Wide Size Range – DN50 to DN1600 available

5. Easy Installation – flange connection for fast setup

6. Versatile Applications – sewage, drainage, harbor, wastewater projects

Technical Specifications

Main connection size

Tips:The above data is only part of the data, if you need a special size, please contact us.

Table of Materials

Applications

1. Municipal sewage discharge pipelines

2. Wastewater treatment plants

3. Industrial drainage systems

4. Port and coastal protection projects

Looking for a durable and corrosion-resistant check valve for your sewage or wastewater project?
Contact us today for pricing, samples, or customized solutions.

Product packaging

FAQ

Q: What are the advantages of duckbill valves?

A: The advantages of duckbill valves mainly include cost-effective, easy installation, light weight and small size, automatic operation, corrosion resistance, self-cleaning function, good sealing performance, and anti-freeze performance.

Q: What are the materials of flanges?

A: There are SS304, SS316,carbon steel, etc.

Q: Can I choose different materials of rubber?

A: Yes, it can be customized according to customer requirements.

Q: What are the standards of your flanges?

A: Our flange standards are DIN, ANSI, BS, ISO, JIS, EN 1092, etc.

Q: What is the caliber of a duckbill valve?

A: DN50-DN1600.

Q: How long is your delivery time?

A: Depending on the quantity, it generally does not exceed 20 working days.

The company adheres to the business philosophy of "customer satisfaction is our first duty, all employees are responsible for creating quality, continuous improvement sets new heights, honest service builds reputation", and wholeheartedly provides high-quality products and professional services to new and old customers.

The factory mainly produces rubber expansion joints, duckbill check valves, dismantling joint, bellow expansion joints, compensators, repair clamp, 02S404 national standard waterproof casings, gate valves ,butterfly valves etc; and all products have passed ISO 9001:2015 quality management system certification; adopting national and industry standards, advanced manufacturing technology, strong R&D and manufacturing capabilities, they are widely used in water supply, drainage, electricity, chemical industry, gas, metallurgy, urban construction and environmental protection and other pipeline industries.