Hansen Max-Flo Trough and Tank Valves

Hansen Max-Flo Trough and Tank Valves

Hansen Max-Flo Trough and Tank Valves

Hansen Max-Flo Trough and Tank Valves are available from your local Irrigear Independent Experts.

Hansen Max-Flo Diaphragm Valves have been designed with multiple thread and connection combinations to increase overall durability and versatility. The patent pending “Self Cleaning Pilot” ensures the valves are durable and suitable for dirty water applications. Less operating pressure is required, reducing pumping costs and increasing flow. Mini body design allows for easy installation across a wide range of applications and our 30 year time tested performance slow open and close diaphragm ensures no undue stress is placed on pump lines or pumps.

Advice. Products. Solutions. Australia-wide. Locally source and buy Hansen Max-Flo Trough and Tank Valves and other great solutions from HR Products from the leaders in pumping, irrigation, filtration, water and fluid management – Irrigear® Independent Experts.

Hansen Max-Flo Trough and Tank Valves are designed and made in New Zealand are ideal for a range of applications:

  • Agricultural, Commercial and Industrial Applications
  • Animal Drinking Troughs
  • Water Storage Tanks
Hansen Max Flor Trough and Tank Diaphragm Valves
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Hansen Max-Flo Trough & Tank Diaphragm Valves – Product Features


  • Top Entry Installations – Screw the adjustable float to the arm of the Maxflo valve. Adjust the mounting position to achieve the desired air gap between the threaded valve body outlet and the water level. Air Gap is adjustable from -19mm to +45mm @ 3.5 bar.

  • Side and Bottom Entry Installations – Thread the cord through the valve body arm then through the float mounting hole and around the float to the top hole. Water level height is changed by adjusting the cord length from the top and tying off on the hole.

  • Slow Close Action – The Maxflo internals have been designed with a built in delay in closing, this helps to minimise water hammer. NOTE: The Maxflo arm may be in the close position but the valve may take up to 8 seconds to fully close. Do Not Force Float Arm.

  • Self Flushing Pilot Hole – Hansen Max-Flo Valves have been designed to ensure reliable operation at low and high pressures.  NOTE: Pressurised water will pass through the pilot hole and over the arm when opening and closing. Water will stop passing through the pilot hole when fully closed.

  • Anti-Syphon Holes – When the valve body outlet is submerged in water or has an extension outlet tube attached, the Anti-Syphon Holes have been designed to be knocked out to prevent the valve from back flowing as long as the Anti-Syphon Holes are above water level.

  • Extension Arm – Hansen Max-Flo Valves include an Extension Arm. Use this Arm when a larger air gap is required between the water and threaded outlet of the valve body. Air Gap is adjustable from +65mm to +105mm @ 3.5bar.

  • Male Adaptors – O-Ring seal short adaptors available in 15-50mm and long adaptors from 15-32mm. Manufactured from High Quality Glass Fibre Reinforced Nylon for a weather, termite, fungi & bacteria resistance.

  • Cleat – The Cleat is to lock the valve on or off when using a float with a cord.

Hansen Max-Flo Valves – Detailed Features & Benefits


  • High performance, cost effective trough/tank valve

  • Flow Rate: 570 lpm @ 29psi

  • Suitable for side, bottom and top entry

  • Strong, compact design

  • Delivers high volumes of water quickly with unrestricted full flow

  • Self – cleaning pilot for use in clean or dirty water

  • Low operating pressure required reducing pumping costs and increasing flow

  • Manufactured from strong, non-corrosive UV stabilised materials

  • Mini body design to enable easy installation

  • Suitable for high/low pressure operations - from 0.2 Bar to 12 Bar.

  • Variable open and close action preventing valve bounce and water hammer.

  • Supplied with: Valve body, 20mm, 25mm & 32mm Standard Adaptors, Adjustable Extension Arm, 100mm Blue Flanged Float and 650mm Cord.

  • Available in Female and Male BSPT thread configurations

The Max-Flo Diaphragm Valve is manufactured from Potable Water approved materials:

  • Diaphragm Valve Body – Glass Fibre Reinforced Nylon
  • Diaphragm – Nitrile Rubber
  • Guide Bush – Glass Fibre Reinforced Nylon
  • Spring – Stainless Steel
  • Split Pin – Stainless Steel
  • Valve Body Cap – Acetal
  • Guide Pin – Stainless Steel
  • Valve Body Cap Nut - Glass Fibre Reinforced Nylon
  • Arm Seal – Thermoplastic Polyurethane Elastomer
  • Short Control Arm – Glass Fibre Reinforced Nylon
  • Screws – Stainless Steel
  • Adjustable Extension Arm – Glass Fibre Reinforced Nylon
  • Cord – Polyester
  • Adaptor – Glass Fibre Reinforced Nylon
  • Adaptor O-Ring – EPDM (Ethylene Propylene)
  • Float – High Density Polyethylene
  • Thread Insert – Glass Fibre Reinforced Nylon
HR Products

Quality Irrigation Equipment.

HR Products manufactures, imports and distributes quality automatic irrigation equipment for agricultural, golf course, sports turf, landscape and home watering systems throughout Australia.


Established in 1979 as part of Little Moreton Pty Ltd in Perth, Western Australia, the business has grown into one of Australia’s largest wholesale irrigation distributors with an extensive dealer network across the country.


In 2023, the business was acquired by Valmont Industries, Inc. expanding the company’s geographic footprint and growing its parts presence in a key agriculture market.


With offices in Western Australia, South Australia, Victoria, New South Wales and Queensland, HR Products has built a reputation as a leading wholesale supplier to retail irrigation, hardware, plumbing and rural stores.


HR Products' team of irrigation professionals are dedicated to ensure that you have the best products and service to make sure you get the best information for project requirements.


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Talk to your local Irrigear® Independent Experts for more information about the range of Hansen Max-Flo Trough and Tank Valves and other great solutions from HR Products that can help on your next water management project.

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