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  • Quickstop Advance (Adjustable) - Fast flow ball cock alternative for tank filling and cisterns.
  • Quickstop Advance - Adjustable. Close up on adjusting mechanisms.
  • How to simply adjust the arm length of the Quickstop Advance - Adjustable Ballcock Float Valve.
  • How the Quickstop Valves work to rapidly fill water tanks and toilet cisterns.
  • Quickstop Valve Performance Chart.

Quickstop Advance Valves - Adjustable Arm


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Product Description

Fast Water Tank or Cistern Float Valve Fill with Adjustable Arm (Ballcock Alternative)

QuickStop Advance Float Valves are hydraulic water level regulators with a hydraulically operated closure.

Designed as a replacement to conventional ballcock valves in water tanks to protect booster pumps, the QuickStop goes instantly from fully open to fully closed, preventing repeated stop/start cycling of pumps when filling tanks or cisterns. This makes the pump more efficient, saves energy and wear and tear on the pump.

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

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

It has not been WRAS tested, so is currently only available for non-potable water installations.

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.

A versatile ballcock and float valve alternative which is adaptable to many differenty types of installation including water tanks, toilet cisterns, roof tanks and header tanks.

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.


The QuickStop Advance - Adjustable Hydraulic valve comes with 24 months warranty from date of purchase. This warranty does not apply to defects caused by tampering or abnormal use of the product.

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  Size*Minimum hole required
(if putting inlet through cistern wall or similar)**
0.5" 1/2" (12.7mm) 0.825" (21mm)
0.75" 3/4" (19mm) 1.041" (27mm)
1" 1" (25.4mm) 1.309" (34mm)
1.25" 1 1/4 (31.75mm) 1.65" (42mm)
1.5" 1 1/2 (38.1mm) 1.882" (48mm)

* BSP sizes are the nominal bore of the fitting not the measurable thread size, which will always be larger.

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

Technical Information


  • BSP Connection: 1/2", 3/4", 1", 1 1/4" or 1 1/2" see options above.
  • Operating Pressure: 0.2 to 6 bar
  • Max Pressure: 15 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


  • Body: ABS and Nylon
  • Float: Polypropylene
  • Levers: ABS
  • Membrane: Rubber SEBS
  • Colour: White for 0.5", Black for all other sizes
  • Screws: Stainless Steel

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


Included Components

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

Useful Information

How to improve water pump efficiency (and save money) - 5 top tips blog post.

Product Reviews

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  1. Excellent product 5 Star Review

    Posted by on 29th Aug 2020

    Excellent product. I installed it in a water tank with a pump for irrigation system. The valve works fine and the water flows freely without that pressure noise from other types of Metal valves normally found on the market. I have installed one of this valve about 15 years ago and it still works great. Recommended.

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