PVC pipes with pressure seals, commonly known as PVC pressure seal pipes or PVC pressure fittings. These are used in plumbing and piping systems where a secure and leak-proof joint is required, especially under pressure. Here’s an overview:

1. Material: PVC (polyvinyl chloride) is the primary material used in the manufacturing of these pipes. PVC is chosen for its durability, chemical resistance, and cost-effectiveness. These properties make PVC pipes suitable for various applications, including water supply, irrigation, and drainage.

2. Pressure Seals: Unlike standard PVC pipes, which often use solvent cement or compression fittings for joining, PVC pressure seal pipes feature built-in seals to ensure a watertight connection. These seals are typically made of rubber or elastomeric materials and are designed to withstand the pressure within the piping system without leaking.

3. Joint Types: PVC pressure seal pipes come with various joint configurations, including socket (bell) and spigot, threaded, and push-fit joints. Each type of joint offers different benefits in terms of ease of installation, flexibility, and compatibility with other piping systems.

4. Applications: PVC pressure seal pipes are commonly used in pressurized water distribution systems, such as municipal water mains, residential plumbing, and agricultural irrigation systems. They are also used in industrial applications where a reliable and leak-proof piping system is essential.

5. Pressure Rating: PVC pressure seal pipes are available in different pressure ratings to suit various applications and operating conditions. Pressure ratings are typically indicated by the class or schedule of the pipe, with higher classes designed to withstand higher pressures.

6. Sizes: PVC pressure seal pipes come in a range of sizes to accommodate different flow rates and system requirements. Common sizes include diameters from small bore pipes used in household plumbing to larger pipes used in industrial and municipal applications.

7. Corrosion Resistance: Like other PVC pipes, PVC pressure seal pipes are resistant to corrosion, rust, and chemical degradation, making them suitable for use in corrosive environments, such as underground installations or in contact with aggressive chemicals.

8. Installation: Installation of PVC pressure seal pipes is typically straightforward and can be done using simple hand tools. The joints are designed to provide a secure and leak-proof connection without the need for specialized equipment or skills. Proper installation techniques, such as ensuring clean and dry surfaces before joining, are essential to achieving reliable seals.

Overall, PVC pressure seal pipes offer a reliable and cost-effective solution for pressurized piping systems, providing secure joints and long-term performance in various applications.