Durable SS304 duckbill check valve with nitrile rubber , DN100
size. Corrosion-resistant, maintenance-free, and ideal for sewage
discharge, wastewater treatment, and port applications.
Contact us for a quote today!
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
| Parameter | Value |
|---|
| Size Range | DN50 – DN1600 |
| Material | SS304 Stainless Steel + Nitrile Rubber |
| Connection Type | Flanged |
| Working Pressure | Up to 1.0 MPa |
| Application Fields | Sewage, Wastewater, Drainage Systems, Ports |
Main connection size
| Model | Pipe Nominal Diameter | Length(mm) | High(mm) | Flange outside diameter(mm) |
| XH4150-150-F | 50 | 150 | 100 | 150 |
| XH4180-220-F | 80 | 220 | 140 | 200 |
| XH41100-250-F | 100 | 250 | 200 | 225 |
| XH41150-340-F | 150 | 340 | 265 | 275 |
| XH41200-420-F | 200 | 420 | 325 | 338 |
| XH41250-520-F | 250 | 520 | 425 | 400 |
| XH41300-620-F | 300 | 620 | 525 | 485 |
| XH41350-700-F | 350 | 700 | 625 | 525 |
| XH41400-800-F | 400 | 800 | 725 | 588 |
| XH41450-900-F | 450 | 900 | 825 | 625 |
| XH41500-980-F | 500 | 980 | 925 | 688 |
| XH41600-1120-F | 600 | 1120 | 1025 | 800 |
| XH41700-1180-F | 700 | 1180 | 1125 | 969 |
| XH41800-1350-F | 800 | 1350 | 1400 | 1080 |
| XH41900-1500-F | 900 | 1500 | 1525 | 1150 |
| XH411000-1600-F | 1000 | 1600 | 1725 | 1350 |
| XH411200-1840-F | 1200 | 1840 | 1950 | 1485 |
Tips:The above data is only part of the data, if you need a special
size, please contact us.
Table of Materials
| Application | Coast, beach, dock, reservoir,etc. |
| Rubber Material | NR,NBR,EPDM etc. |
| Flange Material | Carbon steel,SS304,SS316 etc. |
| Flange Drilling | PN10/PN16 |
| Flange Standard | DIN (Other Standarts Optional) |
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.
