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   What is a part 1 ball valve?

   • A Part 1 ball valve or Portsmouth ball valve is a ball valve made to British Standard specification 1212, Part 1. It consists of a piston inside a brass housing, with a float arm secured to the valve via a split pin. Inside the piston is a slot which accommodates the end of the float arm, and on one end of the piston is a washer.

   Part 1 ball valve: what is it & how does it work? - DIY Plumbing

   www.diyplumbing.co.uk/part-1-ball-valve/

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   How do ball valves work?

   • Inside the piston is a slot which accommodates the end of the float arm, and on one end of the piston is a washer. When the water level in the cistern rises, the arm pushes the piston and its washer onto the valve seating, closing the valve. Part 1 ball valves are gradually being phased out in favour of Part 2 and Part 3 ball valves.

   Part 1 ball valve: what is it & how does it work? - DIY Plumbing

   www.diyplumbing.co.uk/part-1-ball-valve/

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   What is a part 2 ball float valve?

   • Part 2’s design prevents the nozzle from getting submerged, keeping water where it belongs. Now you can easily tell Part 1 from Part 2 ball float valves. Remember, if you’re doing a new installation, go for Part 2 to stay in line with water regulations and keep things running smoothly.

   What's the difference between Part 1 and Part 2 Float Valves

   ondemandsupplies.co.uk/whats-the-difference-between-part-1-and-part-2-float-valves/

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   What is a part 1 valve?

   • The Part 1 valve, or Portsmouth valve as it is sometimes known, is similar to its predecessor, the Croydon valve, whose piston moves up and down instead of backwards and forwards. Some cheaply made ball valves have broadly the same design as the Part 1 valve, except that they lack the plastic or metal cap on the end, exposing the piston.

   Ball valve: what is it & how does it work? - DIY Plumbing

   www.diyplumbing.co.uk/ball-valve/

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2. www.diyplumbing.co.uk › part-1-and-part-2-ballPart 1 and Part 2 ball valves: what’s the difference?

   www.diyplumbing.co.uk › part-1-and-part-2-ball

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   Part 1 and Part 2 ball valves – the main differences. The first difference concerns where on the valve the water comes out. On a Part 1 or ‘Portsmouth’ valve, the outlet is on the underside of the valve. However, on a Part 2 or ‘diaphragm’ valve, the outlet is on the top.

   • Part 1 Ball Valve

     A Part 1 ball valve or Portsmouth ball valve is a ball valve...

   • Ball Valve

     Part 1 ball valve – Portsmouth valve The Part 1 ball valve...

3. www.diyplumbing.co.uk › part-1-ball-valvePart 1 ball valve: what is it & how does it work? - DIY Plumbing

   www.diyplumbing.co.uk › part-1-ball-valve

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   A Part 1 ball valve or Portsmouth ball valve is a ball valve made to British Standard specification 1212, Part 1. It consists of a piston inside a brass housing, with a float arm secured to the valve via a split pin.

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5. www.diyplumbing.co.uk › ball-valveBall valve: what is it & how does it work? - DIY Plumbing

   www.diyplumbing.co.uk › ball-valve

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   • Ball Valve Types
   • Equilibrium Ball Valves
   • Faults

   There are several different types of ball valve available. All of them must conform to BS-1212, the British Standard specification code for ball valves. The different ‘parts’ of the code are used to refer to the different types of valve.

   See full list on diyplumbing.co.uk

   Ball valves which equalise the water pressure on either side of the valve washer are not limited to Part 4 Torbeck models – there are also equilibrium Part 1 valves. In this case, the piston has a channel which allows the water to flow through it in order to occupy the other side of the washer.

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   A faulty ball valve is the most common cause of cistern overflow, and can easily be repaired or replaced. Typical ball valve faults include: 1. The washer or diaphragm and/or the valve seating has worn and no longer forms a seal. 2. The float has become waterlogged and has sunk. 3. Grit, limescale or other debris is preventing the valve from closin...

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6. www.stevensonplumbing.co.uk › part-1-brass-floatPart 1 Ballcock / Float Valves BS1212/1 - Stevenson Plumbing

   www.stevensonplumbing.co.uk › part-1-brass-float

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   Often called a "Portsmouth valve", these brass BS1212/1 float valves (also known as ballcocks, inlet valves, fill valves or ball valves) are used in WC toilet cisterns, loft / attic cold water tanks and central heating feed / expansion header tanks.

7. Videos

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     What are BALL VALVES and how do they work?

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     Ball Valve - Working Principle and Types

     28 Jan 2023

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     How Ball Valves Work

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8. ondemandsupplies.co.uk › whats-the-differenceWhat’s the difference between Part 1 and Part 2 Float Valves

   ondemandsupplies.co.uk › whats-the-difference

   Mar 7, 2023 · Discover the easy-to-spot differences between Part 1 and Part 2 ball float valves, found in your loft’s water tanks. Let’s dive into their simple design variances, regulatory aspects, and how they adjust.

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9. www.plumbco-online.co.uk › understanding-ballUnderstanding Ball Valves: Your Essential Guide - Plumbco-online

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   Feb 28, 2024 · A ball valve is a type of plumbing valve that controls the flow of liquids by means of a spherical disc (the ball) inside the valve body. This ball has a hole or port through the centre, which allows fluid to pass through when aligned with the valve's inlet and outlet ports.

10. tameson.co.uk › pages › plumbing-ball-valveA Practical Guide to Plumbing Ball Valves | Tameson.co.uk

    tameson.co.uk › pages › plumbing-ball-valve

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    May 16, 2023 · A ball valve is a quarter-turn valve - the stem turns 90° to fully open or close the valve - that controls the liquid flow in a plumbing system. The ball in the valve is cored. When the hole in the ball is perpendicular to the ports (Figure 2 top), the valve is closed, and flow is blocked.