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Frequently Asked Questions (FAQ)

What is the required flow rate of laboratory safety showers and eye wash units?
To achieve ANSI Z358.1-2004 and AS/NZ 4775-2007 safety eye washes require a minimum flow requirement of 11.4 litres per minute. Safety showers have a minimum flow requirement of 76 litres per minute. All Broen safety showers and eye washes should be connected to a flushing fluid supply capable of meeting the stated minimum flow rates. The water supply line size must be hydraulically designed to meet the relevant Australian standards.

Please note: Inlet connection 25mm (1”) BSP for showers and 15mm (½”) BSP for eye washes.
What is the correct way to install Alsident® System fume extraction arms, so they do not droop and operate ineffectively?
The most common cause of the arm drooping is that it has not been installed correctly. Ensure that the damper lever is positioned to the right of the arm as you face it (Alsident® sticker should also be facing outwards, however this sticker can be removed so it is not the best method of identification). All Alsident® System products come with installation instructions which can also be found on their website (

Alsident® System also have their own YouTube channel which is very helpful and features a short installation animation for the ceiling, wall and bench mount arms. Please follow this link:
What is the correct Alsident® fume extraction arm for my needs?
Alsident® have a very useful website that allows you to input the dimensions and details of the area where an Alsident® fume extraction arm is required. You will be able to select an Alsident® fume extraction arm and mounting method to see a visual representation of the room and working area of the selected items.

Please follow this link for further details:
Can Alsident® Systems be used in hairdressing salons?
At hairdressing salons, various chemicals are often used for working processes, such as hair dyeing, bleaching and permanent waving. Therefore, local extraction is required.

Local extraction is also effective for working processes involving mixing of products. The work cabinets from Alsident® System 25 are very efficient when the hazardous vapours from mixing are to be enclosed. Alsident® System cabinet type 3 has a manually operated damper for opening or closing the air flow.

See the following link for more details:
Do I need to install isolation valves under the bench when using Broen laboratory tap ware?
Most Broen laboratory fittings sold in Australia and New Zealand have the integral BALLOFIX shut off valve installed in the neck of the tap above the bench; therefore all water flow is adjusted with ease.
Do you sell hands free tap ware for use in laboratories?
Yes! The Broen Stabilet and Stabiline knee operated and electronic valves have built-in Thermostatic Mixing Valves for pre-set water temperatures and failsafe.
What is a Thermostatic Mixing Valve or TMV?
A Thermostatic Mixing Valve or TMV is a valve that blends hot water with cold water to ensure constant, safe shower and bath outlet temperatures, preventing scalding.
Why would I need a TMV?
A TMV is most useful where a risk of scalding exists to persons considered at high risk (ie Children, the elderly or persons with a disability).
What are the advantages of the Stabitherm TMV?
The Stabitherm TMV is small and compact, finished in a white/grey polycoat so is suitable for exposed installations in residential settings.
The Stabitherm TMV is assembled and tested in Brisbane, Queensland and distributed Australia wide. The valve is self-balancing at a pressure differential of 6:1 Cold:Hot and can be installed in any orientation within 6 metres of the point of use. The Stabitherm TMV has a built in Failsafe function that prevents scalding water passing through the valve if the Cold water supply is interrupted or shut off.
Do you have to have a special license to install and commission Thermostatic Mixing Valves?
A licensed Plumber who has certification to work on TMV’s should always be used for work involving TMV’s as they are a safety device. The TMV must be commissioned and serviced by a plumber who has completed the additional TMV course at TAFE.
How often does a Broen Stabitherm TMV need to be serviced?
All Broen Stabitherm TMV’s are approved to the NSW Department of Health requirements, enabling them to be installed in Health Care applications such as hospitals or aged health care. Broen Stabitherm Thermostatic Mixing Valves are watermarked and approved for potable water as per AS4032.1.

As per reference from AS4032.1, the Broen Stabitherm TMV’s are to be tested at intervals of not more than 12 months (AS4032.3 Requirements for field testing, maintenance or replacement of TMV’s).

This Annual Service replaces the ‘O’ Rings, washers and strainers and record of test results and repairs shall be provided in accordance with AS4032.3.

At no less than intervals of Five years (AS4032.3) a Full Replacement Service must be carried out on TMV’s.

For Broen Stabitherm TMV’s, this Service replaces Washers, Strainers, Non-Return Valves and ‘O’ Rings, Thermoscopic Cartridge, Handle Guide, Temperature Control Handle and Screw.

Please note: Broen Stabitherm TMV’s must be serviced by a plumber who has completed the additional TMV course at TAFE.