Wirquin Topy 16300501 Side Entry Inlet Float Valve, 3/8 inch, 10mm

Spec sheet

For a toilet cistern needing a side-entry inlet valve, the Wirquin Topy is a compact replacement option designed for a variety of cisterns. Its side-feed position suits installations where the water supply enters from the side. Need to restore the cistern’s filling mechanism without replacing the whole unit? This valve offers a focused solution, with a waterline that is quick to set.

• Name: Wirquin Topy side-entry inlet float valve
• Reference: 16300501
• Connection: 3/8 inch, 10mm
• Feed location: Side feed
• Operating pressure: 0.1 to 16 bar
• Material: Plastic valve body, rubber inlet diaphragm washer and thread washer
• Dimensions: 12.5 x 4.8 x 17.5 cm
• Weight: 110 g

Requirements

The valve is suitable for a variety of toilet cisterns and operates across a stated pressure range of 0.1 to 16 bar. Before fitting, match the cistern’s side-entry arrangement and the 3/8 inch, 10mm connection to the valve. This helps ensure the replacement suits the existing inlet position and supply connection. The inlet diaphragm washer and thread washer are rubber, while the main valve body is plastic.

For a repair centred on the cistern’s filling mechanism, replacing the inlet valve is a more targeted approach than replacing the entire cistern. The Topy’s compact design is intended to save space, which is useful when working within the cistern area. Its adjustable waterline also lets you set the fill level as part of the installation.

Everyday use

Once installed, the float valve controls water entering the cistern as it refills. The side-feed layout is particularly relevant when the supply connection is positioned at the side, rather than at the bottom. A quick-to-set waterline makes it easier to establish the required level during fitting, while the stated operating pressure range supports use across a broad range of supply conditions.

Buyers describe it as a straightforward like-for-like replacement and often highlight the ease of fitting and day-to-day function. That feedback can be useful when choosing a replacement for an existing cistern valve, while the correct feed position and connection remain the practical points to match to your installation.

Before you decide

Is this valve for a side-entry or bottom-entry cistern? It is a side-feed inlet valve, so it is intended for a cistern with a side-entry water supply.

What operating pressure does it support? The stated operating pressure range is 0.1 to 16 bar.

What materials are used? The main valve body is plastic. The inlet diaphragm washer and thread washer are rubber.

Is it worth it?

If your cistern needs a side-entry inlet valve, the Wirquin Topy combines a compact design with a waterline that is quick to set and suitability for a variety of cisterns. Its defined connection and broad stated pressure range make it a practical choice for a targeted inlet-valve replacement, rather than a full cistern change.