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  • Quickstop Advance (Adjustable Version) for quick filling of tanks and cisterns.
  • Quickstop Advance (Adjustable Version) close up of adjusting mechanisms.
  • How to lengthen the arm of the Quickstop Advance Adjustable Float Valve.
  • How the Quickstop Advance Hydraulic Float Valve work.
  • Performance Charts for the Quickstop Advanced Sizes.

Quickstop Advance Float Valve - Adjustable Arm

£26.30  Price includes VAT

Product Code: QS***A

Product Description

Ballcock Replacement- Adjustable Plastic Float Valve

Designed as an alternative to conventional ballcock valves in water tanks to protect booster pumps, the Quickstop Advance goes instantly from fully open to fully closed, preventing repeated stop/start cycling of pumps when filling tanks or cisterns.

QuickStop plastic float valve has a very high flow rate allowing rapid filling with minimal pressure loss.

Available in different sizes, 0.5", 0.75", 1", 1.25" and 1.5". 

This is a fully adjustable water valve; the Locking lever (at the center hinge) easily sets the minimum and maximum tank liquid levels and the length of the float arm can be simply adjusted too giving you great flexibility from 0 to 180o. The adjustable arm has 6 different settings enabling you to lengthen the arm up to 60mm.

Can be used in water tanks, toilet cisterns, roof tanks, header tanks instead of a ballcock and float valve.

When water is drawn from the tank, the QuickStop has a delayed re-start level of approximately 3cm, which further reduces the stop/start frequency of the pump.

QuickStop float valves are hydraulic water level regulators with a hydraulically operated closure.

What does the QuickStop size refer to?

The size refers to the connections. The Inlet is a BSP sized male thread (the outlet is a male barbed fitting).

QuickStop SizeInlet BSP Male Thread SizeMinimum hole required
(if putting inlet through cistern wall or similar)*
0.5" (12) 1/2" (12.7mm) 0.825" (21mm)
0.75" (18) 3/4" (19mm) 1.041" (27mm)
1" (25) 1" (25.4mm) 1.309" (34mm)
1.25" (32) 1 1/4 (31.75mm) 1.65" (42mm)
1.5" (40) 1 1/2 (38.1mm) 1.882" (48mm)

* note if drilling a new hole to put inlet through, the instruction manual says to drill 2mm larger.

Technical Information


  • Operating Pressure: 0.2 to 6 bar
  • Max Pressure: 10 bar
  • Bursting Pressure: >20 bar
  • Operation: Continuous
  • Operating Temperature: 0 to 50oC
  • Float Movement Range: 0 to 180o
  • Float Arm Adjustment: upto 60mm (6 settings)
  • CE Mark

Note: The maximum operating pressure is 6 bar, above this value the valve remains closed. However this varies for the following float angles;

  • 0o = 3 bar,
  • 20o = 3.7 bar,
  • 40o = 5 bar


  • Body: Non-toxic Polycarbonate
  • Float: Polypropylene
  • Levers: ABS
  • Membrane: Rubber SEBS
  • Colour: White (0.5"), Black (all other sizes).
  • Screws: Stainless Steel

Included Components

  • Quickstop Advance Float Valve (Adjustable)
  • Mesh Filters (optional)
  • Washers and Nut
  • Installation Instructions


The QuickStop Advance - Adjustable Hydraulic valve is warranted to be free from any manufacturer’s defects in material and workmanship for a period of 2 years from the date of purchase. This warranty does not apply to defects caused by tampering or abnormal use of the product.

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