This series of hoses is made of high-strength PVC materials, offering excellent flexibility, wear resistance, and pressure resistance to ensure stable performance in harsh environments.
Product Specifications
1. Size Specifications
Diameter: 4 inches (~102mm), 5 inches (~127mm), 6 inches (~152mm)
Length: Standard 10m/roll, customizable lengths (e.g., 5m, 15m, 20m, etc.)
Working Pressure: 0.3-0.5MPa (can be reinforced upon request)
Temperature Range: -20°C to +60°C (suitable for most environments)
Size (Inches) Inner Diameter (mm) Outer Diameter (mm) Working Pressure (Bar) Burst Pressure (Bar) Temperature Range (°C) Material 4" 100 115-120 3-5 10-15 -20°C to +60°C Rubber/PVC 5" 125 140-145 3-5 10-15 -20°C to +60°C Rubber/PVC 6" 150 165-170 3-5 10-15 -20°C to +60°C Rubber/PVC
2. Material Structure
Inner Layer: Highly wear-resistant and corrosion-resistant synthetic rubber or PVC to ensure smooth water flow and prevent scaling.
Reinforcement Layer: High-strength polyester fiber or steel wire spiral support to prevent collapse and enhance negative pressure resistance.
Outer Layer: Weather-resistant rubber or PVC coating with UV protection and anti-aging properties to extend service life.
3. Connection Methods
Standard Flange Connection: Compatible with various pump interfaces for a secure seal.
Quick Coupling (Optional): Facilitates fast installation and disassembly.
Customized Couplings: Special interface designs available upon request.
Product Pricing
Prices vary depending on material, size, length, and order quantity. Below are reference prices (FOB China port):
4-inch Suction Hose: $1.8-3.7/m (bulk orders eligible for discounts)
5-inch Suction Hose: $4.1−7.2m
6-inch Suction Hose: $3.7−5.8/m
Note:
Custom specifications (e.g., special lengths, enhanced pressure resistance) require additional quotes.
Long-term partners enjoy more favorable wholesale pricing.
How to Make a Suction Hose for a Water Pump?
The manufacturing of a PVC water pump suction hose involves several key steps to ensure durability and high performance:
1. Material Selection
Inner Layer Material: High-elasticity, corrosion-resistant rubber or PVC to withstand prolonged water exposure without aging.
Reinforcement Layer: Polyester fiber braiding or steel wire spiral structure to enhance pressure resistance and prevent collapse.
Outer Protection Layer: UV-resistant and wear-resistant coating for outdoor use.
2. Production Process
Extrusion Molding: The inner layer material is shaped into a tube via an extruder.
Reinforcement Layer Wrapping: Polyester fiber or steel wire is wound around the inner tube to improve negative pressure resistance.
Outer Layer Coating: A secondary extrusion or coating process forms the protective layer.
Vulcanization/Curing: High-temperature vulcanization (for rubber) or cooling (for PVC) ensures structural stability.
Quality Inspection: Pressure tests, bend tests, and leak checks are conducted to ensure compliance.
Cutting & Packaging: Hoses are cut to customer-specified lengths and packaged with moisture-proof materials.
3. Quality Control
Pressure Testing: Simulates real working conditions to ensure no leaks.
Abrasion Testing: Evaluates the durability of the outer layer.
Flexibility Testing: Ensures the hose does not crack when bent.
High-Quality vs. Low-Quality PVC Suction Hose
1. Material & Structure Comparison
1.1 Material Composition
| Comparison Item | High-Quality PVC Suction Hose | Low-Quality PVC Suction Hose |
|---|---|---|
| PVC Raw Material | Virgin polyvinyl chloride, no recycled content | Contains recycled materials or fillers, prone to aging and cracking |
| Reinforcement Layer | High-density polyester fiber/spiral steel wire | Single-layer cheap fiber or no reinforcement |
| UV Stabilizers | Contains UV inhibitors, lasts 5+ years outdoors | No UV protection, becomes brittle in 3-6 months under sunlight |
1.2 Structural Design
High-Quality Hose: 3-layer structure (smooth inner layer + reinforcement layer + wear-resistant outer layer), uniform wall thickness
Low-Quality Hose: Single or double layer, uneven wall thickness, prone to localized ruptures
2. Performance Comparison
Key Performance Indicators
| Test Item | High-Quality Performance | Low-Quality Issues |
|---|---|---|
| Working Pressure | 5-8 Bar without deformation | Expands/deforms at 3 Bar |
| Burst Pressure | ≥15 Bar | Bursts at ≤8 Bar |
| Bend Test | No creases after 20 bends at 180° | Permanent creases after 3-5 bends |
| Vacuum Test | No collapse at -0.9 Bar vacuum | Collapses at -0.3 Bar |
3. Visual Identification Methods
3.1 Visual Inspection
Surface: High-quality hoses have smooth, bubble-free surfaces with clear printing; low-quality hoses feel rough and grainy
Cross-Section: Cutting open the hose reveals evenly distributed reinforcement fibers in premium hoses, while low-quality hoses show visible impurities
3.2 Physical Tests
Bend Test: High-quality hoses flex easily into a U-shape without rebounding; low-quality hoses feel stiff
Smell Test: Low-quality hoses emit a strong chemical odor (containing harmful plasticizers like phthalates)
4. Certifications & Standards
Mandatory Certifications for Premium Hoses
ISO 9001 Quality Management System
EN ISO 14001 Environmental Management System
EU CE Certification (EN13618 Standard)
NSF/ANSI 61 Drinking Water Safety Certification (if used for potable water)
Red Flags for Low-Quality Hoses
No certifications or fake certification marks
Only labeled as "Complies with GB/T" (basic national standards)
Renato Flex Hose – Professional Suction Hose Manufacturer
Renato Flex Hose is a leading industrial hose manufacturer based in China, specializing in high-quality water pump suction hoses, water delivery hoses, and various industrial hoses. With advanced production equipment and a strict quality management system, we provide premium products and services to customers worldwide, particularly in Europe and the U.S.
Our Advantages
✅ High-Standard Production: Compliant with ISO, CE, and other international certifications for reliable durability.
✅ Customization Services: Supports custom sizes, pressure ratings, materials, and couplings.
✅ Wholesale Supply: Factory-direct pricing, ideal for distributors and bulk purchases.
✅ Global Logistics: Offers sea freight, air freight, and express shipping for timely delivery.
Key Markets
Europe: Germany, France, Italy, Spain, etc.
North America: USA, Canada
Middle East & Southeast Asia: UAE, Saudi Arabia, Indonesia, etc.
As a professional PVC suction hose manufacturer, we guarantee:
Material Traceability: Use first-grade PVC raw materials (e.g., Sinopec/Formosa Plastics) with SGS test reports for each batch
Process Control: Fully automated production with laser thickness monitoring for uniform wall thickness
Quality Traceability: Each product is traceable with production date, machine ID, and QC inspector number
Procurement Recommendations: Request suppliers to provide:
Third-party test reports (focus on burst pressure and heavy metal content)
Physical samples for 24-hour pressure testing
Raw material certification documents
Warning: Beware of "mislabeled hoses" (e.g., selling a 4" hose as 6"). Always verify inner/outer diameters and weight (standard 6" hose should weigh ≥3.2kg per meter).
Contact Us
If you need 4, 5, or 6-inch water pump suction hoses or other customized hoses, feel free to inquire! We provide professional pre-sales consultations, sample shipments, and OEM/ODM services.
Email: admin@renatoplastic.com
Website: https://www.renatoflex.com/
Tel/WhatsApp:+86 - 186 5328 1131
Conclusion
The 4, 5, and 6-inch PVC water pump suction hoses are ideal for efficient water drainage in various industrial and agricultural applications. Renato Flex Hose, as a professional manufacturer, is committed to providing cost-effective products and customized solutions. Whether you are a wholesaler, contractor, or end-user, we can meet your needs! Contact us for collaboration!
