Custom UPVC water supply pipe gate valves are specialized flow control devices made from unplasticized polyvinyl chloride. Designed for precise water flow regulation in piping systems, they offer corrosion resistance, cost-effectiveness, and customizable features to meet specific project requirements. Ideal for both residential and industrial applications, these valves ensure reliable performance in various water supply scenarios.
Applications, Common Sizes & Product Features
Typical Applications
These valves are widely used in municipal water supply networks, residential plumbing systems, industrial water treatment facilities, irrigation projects, and building water distribution systems. They’re particularly suitable for transporting cold water, drinking water, and low-concentration chemical solutions.
Common Specifications
- Nominal Diameter (DN): 15mm, 20mm, 25mm, 32mm, 40mm, 50mm, 65mm, 80mm, 100mm, 125mm, 150mm, 200mm, 250mm, 300mm
- Pressure Rating: 1.0MPa, 1.6MPa (suitable for most medium-pressure water supply systems)
- Connection Types: Threaded (BSP/NPT), flange (PN10/PN16), socket fusion
Key Product Features
- Corrosion Resistance: UPVC material resists rust, chemical erosion, and scaling, ensuring a 15-20 year service life in standard water conditions.
- Low Friction Loss: Smooth inner wall reduces water flow resistance, with a friction coefficient as low as 0.008-0.01.
- Excellent Sealing Performance: Equipped with EPDM or NBR rubber seals, achieving zero leakage under rated pressure.
- Lightweight & Easy Installation: 30-50% lighter than metal valves, reducing transportation and installation labor costs.
- Non-toxic & Hygienic: Complies with drinking water safety standards (e.g., FDA, GB/T 17219) with no heavy metal precipitation.
Alternative Processable Materials & Their Features
- CPVC (Chlorinated Polyvinyl Chloride): Suitable for hot water systems (up to 95°C), offering higher temperature resistance than UPVC while maintaining corrosion resistance. Ideal for solar water heating or industrial hot water pipelines.
- PPR (Polypropylene Random Copolymer): Features better impact resistance and weldability, commonly used in residential hot and cold water systems with operating temperatures up to 70°C.
- Ductile Iron with Epoxy Coating: Provides enhanced pressure resistance (up to 2.5MPa) for large-diameter systems (DN300+), combining metal strength with corrosion protection from the epoxy layer.
Manufacturing Process
- Raw Material Preparation: Mix UPVC resin (70-80%), stabilizers, impact modifiers, and colorants in precise proportions using high-speed mixers.
- Injection Molding/Extrusion: Mold valve bodies, bonnets, and gate plates via injection molding at 170-190°C; produce valve stems through extrusion.
- Precision Machining: Finish sealing surfaces and thread connections with CNC machines to ensure dimensional accuracy (tolerance within ±0.05mm).
- Assembly: Integrate components (seals, stems, handwheels) in clean workshops to avoid contamination.
- Testing: Conduct pressure tests (1.5 times rated pressure for 30 seconds) and leakage tests on 100% of products before packaging.
Manufacturing Challenges
- Dimensional Accuracy Control: Maintaining precise tolerances on sealing surfaces is critical—even 0.1mm deviation can cause leakage, requiring advanced CNC machining and regular tool calibration.
- Material Brittleness Management: UPVC is prone to cracking during machining; strict control of cooling rates (5-10°C/min) during molding and use of impact modifiers (3-5% addition) mitigate this risk.
- Consistent Sealing Performance: Achieving uniform compression of rubber seals across different temperature ranges (-10°C to 60°C) demands precise calculation of seal groove dimensions.
- Large-Diameter Valve Stability: For DN200+ valves, preventing deformation during injection molding requires optimized mold design with uniform cooling channels.
Customization Process
- Requirement Communication: Customers provide parameters (diameter, pressure, medium, connection type, special environments) via our technical consultation form.
- Scheme Design: Our engineering team creates 3D models and material recommendations within 3 working days, including feasibility analysis.
- Prototype Production: Produce 1-3 samples using rapid prototyping or small-batch molding, with delivery within 7-10 days.
- Testing & Validation: Conduct pressure, leakage, and durability tests; adjust designs based on feedback.
- Mass Production: Upon sample approval, start bulk manufacturing with a 2-4 week lead time depending on quantity.
Frequently Asked Questions
- Q: Why does my valve leak slightly after installation?
A: Possible causes include improper flange bolt torque (should be evenly tightened to 25-35N·m) or damaged sealing rings. Check and replace seals if necessary.
- Q: Can UPVC gate valves be used for underground buried pipelines?
A: Yes, but ensure they’re wrapped with anti-ultraviolet protective sleeves and buried at least 0.8m deep to avoid external impact damage.
- Q: How often should maintenance be performed?
A: For domestic systems, annual lubrication of valve stems with food-grade silicone grease is sufficient. Industrial systems in harsh environments require quarterly inspections.
- Q: What’s the maximum temperature UPVC valves can handle?
A: 45°C for long-term use. For higher temperatures, opt for CPVC variants which withstand up to 95°C.
When precision meets reliability in water flow control, choose Goldcattle custom UPVC gate valves. With 15+ years of expertise in tailored fluid solutions, we engineer valves that fit your exact specifications—from DN15 to DN300, 1.0MPa to 1.6MPa. Our strict quality control ensures zero leakage, corrosion resistance, and long-lasting performance. Whether for municipal projects, industrial facilities, or residential builds, we deliver customized solutions with 7-day rapid prototyping and 24/7 technical support. Trust Goldcattle to keep your water flowing smoothly. Visit us at https://www.xmgoldcattle.com/ to start your custom valve project today!
