SS316 Duckbill Check Valve DN50-DN3000 with Corrosion Resistance for Back Pressure Control
Price:
＄11.6-20.6 per set
MOQ:
1 piece
Delivery Time:
3-7day
Brand:
Liang He
Product Description
Product Overview
The SS316 Control Back Pressure Flexible Rubber Duckbill Check Valve is engineered with elastic rubber and reinforced synthetic fibers, featuring a unique duckbill-shaped design that provides exceptional corrosion resistance and reliable backflow prevention.
Operating Principle
Under zero internal pressure, the valve remains securely closed due to its natural elasticity. As pressure increases, the duckbill outlet gradually opens, enabling high-flow-rate liquid discharge while maintaining effective backflow prevention.
Installation Types
- Sleeve rubber blowdown check valve for drain pipe outlets
- Flange type rubber drain check valve for flange outlet ends
- Plate type rubber drain check valve for outlet end structures
- Built-in rubber drain check valve for urban rainwater and sewage systems
- Mortar or cement pipe type rubber drain check valve for pipe ends
Key Features
- Automatic pressure-differential operation - no noise, maintenance-free
- Low startup pressure with natural flow adjustment based on water pressure
- Excellent reverse sealing with zero leakage and enhanced back pressure performance
- Superior corrosion resistance, anti-aging properties, and long service life
- Comprehensive size range from DN50 to DN3000
Technical Specifications
Main Connection Dimensions
| Model | Pipe Diameter (DN) | 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 |
Material Specifications
| Component | Materials Available |
|---|---|
| Application | Coast, beach, dock, reservoir, etc. |
| Rubber Material | NR, NBR, EPDM |
| Flange Material | Carbon steel, SS304, SS316 |
| Flange Drilling | PN10/PN16 |
| Flange Standard | DIN (Other Standards Optional) |
Product Images
Frequently Asked Questions
Where can the product be applied?
Widely used in sewage treatment, farmland water conservancy, petroleum, chemical industry and other fields.
What is the surface treatment?
All components are galvanized for enhanced corrosion protection.
Can the products be manufactured by customer's requirement?
Yes, we offer custom design and manufacturing services beyond our standard specifications.
Can you provide drawings and technical data?
Our professional technical department provides comprehensive drawings and technical documentation.
What is your shipment and delivery time?
Shipping by sea or air. Standard delivery time is 7-14 days, depending on order quantity.
Similar Products
Get in Touch
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