PPR Ball Valve 50mm EG PPRc

Description

PPR Ball Valve 50mm

 

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What is PPR Ball Valve 50mm EG PPRc ?

 

The PPR Ball Valve 50mm EG PPRc PN 25 delivers high-capacity flow control for large-diameter piping systems. It withstands extreme pressure and temperature demands, making it a standard choice for main water lines and central HVAC systems.

The “EG” in the name typically refers to the Electro-Galvanized finish on the internal metal parts (like the ball or stem) or the handle, providing superior rust protection.

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1. Description and Usage

This 50mm (approx. 2-inch) valve uses a quarter-turn spherical disc (ball) to start or stop the flow of water.

• HVAC Systems: Commonly used as an isolation valve for chilled water or hot water manifolds in central air conditioning and heating systems.

• Water Supply: Ideal for main distribution lines in residential apartments, commercial malls, and industrial plants.

• Performance: The PN 25 rating makes it one of the strongest PPR valves available, capable of handling high-pressure surges and constant high-temperature cycles without warping or leaking.

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2. Technical Specifications

The performance of a PN 25 valve is highly dependent on the operating temperature.

Feature	Specification
Diameter	50mm (Standard Socket Weld)
Material	Polypropylene Random Copolymer (Type 3)
Pressure Rating	PN 25 (25 Bar / 362 PSI @ 20°C)
Max Temperature	95°C (Short-term peak); 70°C (Continuous service)
Internal Parts	Brass (often Electro-Galvanized) or Stainless Steel
Seals	PTFE (Teflon) for heat resistance and smooth rotation
Standards	DIN 8077/8078, ISO 15874, EN ISO 16135

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3. Installation Guide

Installation for a 50mm valve requires precise handling due to the larger surface area being welded.

1. Preparation: Cut the 50mm PPR pipe squarely using a heavy-duty pipe cutter.⁶ Clean both the pipe end and the valve socket with alcohol to remove any grease.

2. Heating: Use a professional PPR Welding Machine with 50mm dies. Heat both the valve and the pipe simultaneously.

   • Tip: For 50mm diameter, the heating time is typically 18–24 seconds (check your machine’s specific chart).

3. Joining: Push the pipe into the valve socket without twisting. Hold it firmly for at least 30–40 seconds to allow the plastic to bond.

4. Orientation: Install with the handle facing upward or sideways to prevent sediment from settling in the valve stem.

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4. Maintenance and Best Practices

• Avoid Throttling: Ball valves are designed to be fully open or fully closed.⁷ Using them in a partially open position to “throttle” flow can damage the internal PTFE seals over time.

• Thermal Expansion: In HVAC hot water lines, ensure there are expansion loops near the valve so the physical stress of the expanding pipe doesn’t crack the valve body.

• Operation: To keep the valve from “seizing” due to mineral buildup (scaling), turn it fully off and on at least once every six months.