IFAN Hot Products PPR Concealed Valves

Understanding Inlet Connection Sizes

PPR concealed valves have standardized inlet dimensions. The most common supply line size is 20mm. This is for residential hot and cold water. Some larger applications use 25mm inlets. These are for higher flow requirements. The size refers to the PPR pipe outer diameter.

Standard 20mm (1/2 Inch) Valves

20mm is the standard for most homes. This size supplies a single shower head. It also serves a bathtub spout. PPR Concealed Valves in 20mm are widely available. They match typical residential PPR piping. This size handles normal flow rates effectively.

Oversize 25mm (3/4 Inch) Valves

Luxury showers with multiple outlets need more flow. Body sprays and rain heads require volume. A 25mm concealed valve supplies this. PPR Concealed Valves in this size are used in high-end homes. They also suit commercial changing rooms.

32mm (1 Inch) for Commercial Applications

Some commercial showers have high demand. Gyms, schools, and pools are examples. A 32mm valve provides maximum flow. PPR Concealed Valves this large are less common. They are used with 32mm supply mains. Multiple users can shower simultaneously.

Outlet Size Options

The outlet size may differ from the inlets. A mixing valve often has reduced output. The internal mixing chamber is a restriction. PPR Concealed Valves typically have 20mm outlets. This matches standard shower arm connections. Some models have 15mm outlets for tub spouts.

Thermostatic Valve Size Variations

Thermostatic valves have the same connection sizes. They may have different internal capacities. A 20mm thermostatic valve is common. It fits the same piping as manual valves. PPR Concealed Valves with thermostatic control are available in all standard sizes.

Diverters and Multi-Way Valves

Diverters switch between multiple outlets. They have one inlet and two or three outlets. Common sizes for diverters are 20mm. The inlets and outlets are the same diameter. PPR Concealed Valves for multi-function showers use this size. They allow switching between shower heads.

Wall Thickness and SDR Ratings

The outer diameter is not the only dimension. PPR pipes have different wall thicknesses. SDR 6, SDR 7.4, and SDR 11 are common. PPR Concealed Valves must match the pipe’s SDR. The valve sockets are designed for specific OD. Mixing different SDR ratings causes poor fusion.

Depth and Cavity Space Requirements

Concealed valves fit inside wall cavities. The valve body has a certain depth. A standard PPR Concealed Valve requires 60-80mm depth. This is the distance from the finished wall. It fits a standard 2×4 or 2×6 wall. Always check the specifications before framing.

Service Access Plate Sizes

The trim plate covers the wall opening. Standard plates are around 150mm x 200mm. Some require a 100mm round cutout. PPR Concealed Valves come with specific trim sizes. The wall opening must match the plaster guard. Measure carefully before cutting the tile.

Metric vs. Imperial Conversions

PPR is a metric system. 20mm is approximately 3/4 inch. 25mm is approximately 1 inch. PPR Concealed Valves are not compatible with imperial copper. Adaptors are required for mixed systems. Do not assume a 20mm valve fits 1/2 inch copper. The dimensions are different.

Selecting the Correct Size

Choosing the right size is critical. Consider the number of outlets. Consider the distance from the water heater. Longer runs may need larger pipes. PPR Concealed Valves must match the supply pipe size. Undersizing causes poor pressure. Oversizing is wasteful and unnecessary.

Conclusion on Size Availability

PPR Concealed Valves come in standard metric sizes. 20mm is the most common residential size. 25mm suits luxury or commercial applications. 32mm is for high-demand systems. The outlet is typically the same as the inlets. Always match the valve size to the piping system. Consider depth, trim plate dimensions, and SDR ratings. With proper selection, a concealed valve provides reliable, hidden service.

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