Henan Lianghe Pipeline Equipment Co.,Ltd
                                                                                                           
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Since 2003
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Galvanized Flange EPDM Rubber Duckbill Check Valve 50-1200mm for Sewage Anti Backflow Prevention

Price Negotiable
Price: $16.2-21.3 per set
MOQ: 1 piece
Delivery Time: 1-7 day
Brand: Liang He
Product Description
Product Overview
The Discharge Sewage Anti Backflow Duckbill Non Return Valve with Galvanized Flange and EPDM Rubber construction provides reliable backflow prevention in various industrial and municipal applications.
Applications
Sewage Treatment & Drainage Systems
Effectively prevents sewage backflow at inlets, outlets, pipe intersections, and treatment plant discharge points. Excellent sealing performance ensures no leakage when closed, maintaining wastewater system integrity.
Water Conservancy Engineering
Controls water flow direction in reservoirs, canals, and embankments. Corrosion and wear resistance ensure long-term stability in harsh water environments.
Marine Engineering
Prevents seawater backflow and pollutant intrusion in coastal protection, port terminals, and submarine pipelines. Duckbill design creates effective sealing barrier.
Environmental Protection
Controls leachate and wastewater discharge in landfills and treatment systems. Corrosion resistance prevents environmental contamination.
Industrial Applications
Manages corrosive media flow in chemical, petroleum, and pharmaceutical industries. All-rubber construction withstands various chemicals.
Material Specifications
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 Standards Optional)
Connection Dimensions
Model Pipe Diameter Length (mm) Height (mm) Flange OD (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
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Industrial Valve Installation
Frequently Asked Questions
What is your shipment and delivery time?
By sea or air. Normally 7 to 14 Days for delivery, according to your order quantity.
What is the function of the duckbill valve?
The main function of the rubber duckbill valve is to prevent the backflow of fluid, and at the same time, it has the characteristics of no clogging, good sealing, long service life, no failure, and no maintenance.
What are the application areas of duckbill valves?
Coast, beach, dock, reservoir, etc.
Do you have a catalog?
Yes, we do. Please let me know your email address or instant message and we will send our catalog.
What are your payment terms?
T/T (30% as deposit, remaining 70% to be paid before delivery), L/C at sight.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Henan Lianghe Pipeline Equipment Co.,Ltd
Location Pipeline Industrial Park, Gongyi City, Henan Province, China
Contact Person Kelly

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