Henan Liwei Industry Co., Ltd.
                                                                                                           
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38 Years
Since 1988
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Rubber Flanged Duckbill Check Valve DN50-DN3000 Range with Neoprene Construction for Industrial Applications

Price Negotiable
Price: Price Negotiable
MOQ: 1 set
Delivery Time: After payment 15-30 working days
Brand: liwei
Product Description
Product Overview
Custom rubber flanged duckbill check valves manufactured with premium rubber materials for extended service life and reliable performance in various industrial applications.
Duckbill Check Valve Design
Constructed from elastic neoprene rubber and reinforced synthetic fibers through specialized processing, these valves feature a unique duckbill-shaped design that automatically opens and closes based on pressure differentials.
Rubber flanged duckbill check valve diagram showing construction and dimensions
Technical Specifications
Type Nominal Diameter (mm) Length L (mm) Height H (mm) Flange Diameter C (mm)
XF50-150-F50150100150
XF80-220-F80220140200
XF100-250-F100250200225
XF150-340-F150340265275
XF200-420-F200420325338
XF250-520-F250520425400
XF300-620-F300620525485
XF350-700-F350700625525
XF400-800-F400800725588
XF450-900-F450900825625
XF500-980-F500980925688
XF600-1120-F60011201025800
XF700-1180-F70011801125969
XF800-1350-F800135014001080
XF900-1500-F900150015251150
XF1000-1600-F1000160017251325
XF1200-1840-F1200184019501485
Key Features & Benefits
  • Automatic operation based on pressure differential - no manual intervention required
  • Silent operation with minimal noise during opening and closing cycles
  • Low forward flow resistance with minimal starting pressure requirements
  • Excellent reverse sealing prevents backflow and leakage effectively
  • Corrosion-resistant construction with superior aging and deformation resistance
  • Available in comprehensive size range from DN50 to DN3000
Industrial rubber duckbill check valve installation and application examples
Quality Assurance & Services
  • Comprehensive delivery inspection including pressure testing and material verification
  • 12-month quality guarantee with third-party testing support
  • Free technical solutions and custom drawings provided
  • Professional packaging team ensuring secure transportation
  • 24/7 online support with rapid response for pre-sales and after-sales
  • Factory inspection support and on-time delivery commitment
  • Free samples available for evaluation
Packaging & Shipping
Inner packaging includes protective plastic film and carton cases. Outer packaging features secure export-grade plywood cases with customizable markings. Multiple shipping options available including DHL, UPS, TNT, EMS, or customer-preferred carriers.
Professional packaging and shipping process for industrial valves
Frequently Asked Questions
Q: Do you provide samples? Is it free or charged?
A: Yes, we offer samples free of charge, though shipping costs are covered by the customer.
Q: Are you a trading company or manufacturer?
A: We are a professional manufacturer with extensive production capabilities.
Q: When will products be shipped after order confirmation?
A: Products ship within 7-25 days after receiving prepayment.
Q: Do you have a product catalog?
A: Yes, we maintain a comprehensive product catalog. Please provide your email or instant messenger details for access.
Q: Can you provide technical drawings and data?
A: Our technical department can design and provide detailed drawings and technical specifications upon request.

Get in Touch

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

Company Henan Liwei Industry Co., Ltd.
Location 179 Zhongxin Road, Zhengzhou, Henan,China
Contact Person Carey Liu

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