Product Introduction
The full-plastic PPR (Polypropylene Random Copolymer) ball valve with a short handle represents a pivotal flow control solution meticulously engineered for contemporary water supply and drainage systems. Employing a quarter-turn actuation mechanism, this valve enables rapid and precise on-off control of pipeline media, ensuring efficient fluid management. Its distinctive short-handle configuration not only enhances operational ergonomics but also addresses the installation constraints typically associated with traditional valves in confined spaces. Leveraging the superior thermomechanical properties of PPR materials, this valve is capable of fulfilling a wide spectrum of requirements, from domestic potable water distribution systems to small-scale central air-conditioning water circulation networks.
As a critical control element within pipeline infrastructure, this ball valve achieves fully open and closed states through the rotation of its valve core. Characterized by a low flow resistance coefficient and high adjustment precision, it serves dual purposes as a routine flow regulator and an emergency shut-off device. The product design adheres rigorously to the GB/T 18742 series standards and ISO 9001 quality management system requirements, guaranteeing consistent and reliable performance over extended service periods.
Product Composition
The full-plastic PPR ball valve with a short handle features a modular structural design, comprising the following essential components:
Valve Body: Constructed as a monolithic injection-molded PPR structure, the valve body serves as the load-bearing framework. It incorporates internal fluid passageways and a valve core chamber, facilitating connection to the pipeline system via homogeneous fusion welding techniques.
Valve Core Assembly: Depending on the model specification, the valve core utilizes either high-strength engineering plastics or food-grade brass spheres. Precision machining ensures a perfect fit with the valve seat, enabling zero-leakage sealing performance. The all-plastic variant employs reinforced PP valve cores to comply with stringent non-metallic contact requirements.
Actuation Mechanism: Comprising a short handle (manufactured from PP/ABS materials) and a valve stem, the actuation mechanism is optimized for ergonomic operation while minimizing spatial requirements. The valve stem and core are connected via precision threads, enabling accurate quarter-turn actuation.
Sealing System: The valve features a dual-sealing configuration, consisting of EPDM (Ethylene Propylene Diene Monomer) O-rings and PTFE (Polytetrafluoroethylene) gaskets. The valve seat seal, fabricated from PTFE, offers exceptional chemical stability, while the end seals utilize EPDM rubber to provide durable elastic sealing.
Product Materials
The primary material of the full-plastic PPR ball valve with a short handle is polypropylene random copolymer, a high-performance thermoplastic material engineered through advanced molecular design, exhibiting the following characteristics:
Base Material: The valve body and major structural components are fabricated from food-grade PPR raw materials. Composed solely of carbon and hydrogen atoms, this material emits no noxious odors during hot-melt welding and produces only carbon dioxide and water upon complete combustion, fully complying with the GB/T 17219 hygiene and safety standards for potable water applications.
Sealing Materials:
EPDM Rubber O-rings: With an operating temperature range of -40°C to 120°C, these O-rings exhibit excellent resistance to aging and superior elastic recovery properties.
PTFE Gaskets: Renowned for their outstanding chemical resistance and low coefficient of friction, PTFE gaskets ensure smooth valve operation and long-term leak-free performance.
Performance Parameters: In accordance with GB/T 50349-2005 national standards, the valve is rated for continuous operation within a temperature range of 0°C to 70°C at a maximum design pressure of 1.0MPa. It can withstand short-term service temperatures of up to 95°C and has an instantaneous temperature resistance of 110°C. Available in various pressure ratings ranging from 1.25MPa to 2.5MPa, the product caters to diverse building water supply and drainage requirements.
Product Advantages
Through material innovation and structural refinement, the full-plastic PPR ball valve with a short handle offers significant advantages over traditional metal valves and conventional plastic counterparts:
Superior Corrosion Resistance: The all-plastic construction eliminates the risk of rust and scale formation inherent in metal valves. It demonstrates inherent resistance to acidic, alkaline substances, and water disinfectants, making it particularly suitable for applications with complex water quality conditions. With a projected service life exceeding 50 years (at 70°C operating temperature), it ensures long-term reliability.
Space-Efficient Design: Compared to traditional long-handle valves, the short-handle design reduces installation space requirements by over 40%. Its bidirectional installation capability allows for flexible deployment in confined spaces, such as wall-mounted or cabinet installations, significantly streamlining construction processes.
Ease of Installation and Maintenance: Utilizing hot-melt connection technology, the valve forms a homogeneous bond with the pipeline, providing high joint strength and reliable sealing while eliminating the leakage risks associated with traditional threaded connections. Once installed, the valve requires minimal maintenance, eliminating the need for regular rust removal and seal replacement typical of metal components.
Precise Flow Control: The quarter-turn actuation mechanism enables rapid on-off operation, while the precise valve core-seat interface ensures accurate flow regulation. In the fully open position, the valve exhibits extremely low flow resistance, reducing pressure losses by more than 30% compared to gate valves.
Hygienic, Sustainable, and Safe: Manufactured from food-grade PPR materials and certified to GB/T 17219 hygiene standards, the valve is non-toxic, odorless, and free from heavy metals or endocrine-disrupting substances, ensuring the integrity of potable water systems. Additionally, its recyclable nature results in a significantly lower environmental impact over its lifecycle compared to metal valves.
System Compatibility: Available in standard pipe diameters ranging from 20mm to 63mm, the product seamlessly integrates with various PPR pipeline systems. Suitable for both new construction projects and retrofitting applications, it accommodates an operating temperature range of -20°C to 95°C, making it adaptable to diverse applications, from cold water supply to underfloor heating systems.
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