Chemical Dosing Pots NZ | Stainless Steel 8L & 15L Dosing Pots

FlowQuip stainless steel chemical dosing pots are designed for safe, simple and controlled manual dosing of sealed heating, chilled water, hydronic and closed-loop HVAC systems.

A dosing pot allows liquid treatment chemicals such as corrosion inhibitors, glycol, cleaners and water-treatment additives to be introduced into a closed system without requiring a powered dosing pump. The pot is installed across the flow and return pipework, allowing a portion of system water to be isolated, drained and replaced with the chemical treatment. Once reconnected, the system flow carries the treatment through the circuit.

FlowQuip dosing pots are suitable for commercial mechanical services, HVAC plant rooms, hydronic heating systems, chilled water loops, heat pump systems and closed-loop water-treatment applications throughout New Zealand.

Available in 8L wall-mounted and 15L free-standing stainless steel models, FlowQuip dosing pots are supplied with a practical funnel and valve arrangement for isolation, filling, venting, draining and dosing control.

Download Dosing Pot Instructions Here: Dosing Pot Instructions

All About Dosing Pots:

FlowQuip ADPOTSS8L – 8L Wall-Mounted Stainless Steel Dosing Pot

The FlowQuip ADPOTSS8L is a compact 8 litre wall-mounted stainless steel dosing pot designed for smaller plant rooms or installations where a lower dosing volume is suitable.

It is ideal for commercial heating and chilled water systems where a neat, compact wall-mounted dosing arrangement is preferred.

FlowQuip ADPOTSS15L – 15L Free-Standing Stainless Steel Dosing Pot

The FlowQuip ADPOTSS15L is a 15 litre free-standing stainless steel dosing pot designed for installations where wall space is limited or where a floor-mounted unit is easier to install and service.

The free-standing design makes it especially practical in mechanical plant rooms where wall mounting is difficult, crowded, or not preferred.

Why Use a Stainless Steel Chemical Dosing Pot?

Chemical dosing is an important part of maintaining closed-loop heating and cooling systems. Correct dosing helps protect pipework, valves, heat exchangers, pumps and system components from corrosion, fouling and poor water quality.

A 304 stainless steel dosing pot is a strong option for HVAC water treatment because it does not introduce rust or iron into the system. Compared with mild steel or carbon steel pots, stainless steel offers better resistance to corrosion and helps reduce the risk of sludge, magnetite and unwanted contamination entering the circuit.

FlowQuip stainless steel dosing pots are designed for long service life and simple manual operation in New Zealand commercial HVAC, hydronic heating and chilled water systems.

Key Features

• 304 stainless steel chemical dosing pot for closed-loop systems
• Available in 8L wall-mounted and 15L free-standing models
• Suitable for sealed heating and chilled water systems
• Ideal for HVAC, hydronic heating and plant room applications
• Used for inhibitors, glycol, cleaners and other water-treatment chemicals
• Large filling funnel for easier chemical dosing
• Side-mounted circulation ports on the main body of the vessel
• Funnel and valve arrangement for filling, venting, draining and re-dosing
• Supplied with ball valves for dosing control
• Valved vent point that can also assist as a rinsing point
• No electrical power or dosing pump required
• Helps avoid adding rust or iron contamination into the system
• Suitable for regular manual chemical treatment and maintenance

Practical Design Advantages

Side-Mounted Circulation Ports

FlowQuip dosing pots use side-mounted circulation ports on the main body of the vessel.

This helps promote better mixing of treatment chemicals into the dosing pot and can allow a more compact overall installation height compared with dosing pots that only use top and bottom circulation connections.

Large Filling Funnel

The FlowQuip dosing pot includes a large filling funnel to make chemical dosing easier and cleaner.

This is useful when adding corrosion inhibitor, glycol, system cleaner, flushing chemical, biocide or other water-treatment additives into sealed heating and chilled water systems.

Vent and Rinse Valve Arrangement

FlowQuip dosing pots include a valved vent point that can be used as a controlled air vent during filling and commissioning.

The same arrangement can also assist as a rinse point for washing residual chemical from the funnel after dosing, helping keep the unit cleaner and easier to service.

Wall-Mounted and Free-Standing Options

Many chemical dosing pots are only available as wall-mounted units. FlowQuip offers both a compact 8L wall-mounted model and a 15L free-standing model, giving installers more flexibility on site.

The free-standing ADPOTSS15L is ideal where wall space is limited, while the ADPOTSS8L is suited to compact plant rooms where wall mounting is preferred.

Outdoor Installation Detail

For outdoor installations, the removable funnel can be turned upside down when not in use to help reduce the build-up of rainwater, dust or debris.

This can be useful in exposed plant areas, rooftop plant rooms and coastal New Zealand environments.

Common Applications

FlowQuip chemical dosing pots are commonly used for:

• Commercial HVAC systems
• Hydronic heating systems
• Chilled water systems
• Closed-loop water-treatment circuits
• Boiler and heat pump plant rooms
• Glycol dosing
• Corrosion inhibitor dosing
• System cleaner and flushing chemical dosing
• Mechanical services maintenance
• Building services water treatment
• Commercial and industrial plant rooms

How a Chemical Dosing Pot Works

A dosing pot is installed across the flow and return lines of a closed water system. During dosing, the pot is isolated from the main circuit using the inlet and outlet valves. The operator drains the pot, fills it with the required chemical through the funnel, closes the fill and drain valves, then reopens the isolation valves so the chemical is flushed into the system.

This makes a dosing pot a practical option for maintenance teams and contractors who need to add treatment chemicals without installing a continuous chemical dosing pump.

Basic Dosing Procedure

1. Close the isolation valves to isolate the dosing pot from the main circuit.
2. Open the fill, air vent and drain valves to empty the pot.
3. Close the drain valve.
4. Fill the dosing pot with the required chemical through the funnel.
5. Close the fill and air vent valves to seal the pot.
6. Open the isolation valves to allow system flow through the dosing pot.
7. Allow sufficient time for the chemical treatment to mix through the system.
8. Isolate the pot again if required after dosing is complete.

Always follow the project specification, site procedures and chemical supplier’s instructions when dosing a system.

Dosing Pot Installation Overview

The FlowQuip dosing pot is typically installed across the system flow and return lines. The flow connection should generally be taken from the flow line or circulating pump discharge side, while the return connection should be taken back to the return line or pump suction side.

A drain connection allows the pot to be emptied before filling with the treatment chemical. The air vent allows trapped air to be released during filling, reducing the chance of introducing air into the system.

Installation should always be checked against the project design, system pressure, temperature, chemical type and site requirements.

Suitable With Common Hydronic Valves and Components

FlowQuip stainless steel dosing pots are suitable for installation on sealed heating and chilled water systems that include common hydronic valves, strainers, air separators, dirt separators, filling assemblies and mechanical services components from brands such as Caleffi, Flamco and other HVAC suppliers.

The dosing pot is installed as part of the closed-loop water treatment arrangement and is not dependent on the valve or component brand used elsewhere in the system. Selection should always be confirmed against system pressure, temperature, connection size, water treatment requirements and project specification.

Stainless Steel vs Mild Steel Dosing Pots

Stainless steel dosing pots offer several advantages over mild steel or carbon steel alternatives in closed-loop water systems.

Stainless steel is more resistant to corrosion from water and chemical treatment products. It does not contribute rust or iron contamination to the system, helping reduce the chance of sludge and magnetite build-up. The smooth stainless steel surface also makes it harder for deposits to adhere inside the vessel.

For commercial HVAC and hydronic systems where long-term water quality matters, stainless steel is often the preferred material for chemical dosing pots.

A 304 stainless steel dosing pot is especially useful where:

• The system is in a coastal or exposed environment
• The dosing pot may only be used periodically
• Long-term durability is important
• The plant room environment is harsh
• A cleaner, corrosion-resistant finish is preferred
• The system owner wants to reduce the risk of rust or iron contamination

Suitable Upgrade to Fabricated Products UK Dosing Pots

FlowQuip stainless steel dosing pots can be considered as a suitable upgrade where an existing Fabricated Products UK chemical dosing pot is installed on a sealed heating or chilled water system.

The FlowQuip range includes the ADPOTSS8L 8L wall-mounted stainless steel dosing pot and the ADPOTSS15L 15L free-standing stainless steel dosing pot, giving contractors options when replacing, relocating or upgrading an existing dosing pot.

Selection should always be checked against the existing installation, including system pressure, temperature, connection size, available wall or floor space, dosing volume and project specification.

Alternative to Common Chemical Dosing Pots

FlowQuip dosing pots are commonly considered when replacing or selecting alternatives to existing chemical dosing pots found on New Zealand heating and chilled water sites.

This may include dosing pots commonly associated with Caleffi HSDP18, Flamco 17705, Fabricated Products UK, Central Heating NZ Dose Pot 2, WaterPro 304SS dosing pots, and other chemical dosing pot styles used in sealed heating and chilled water systems.

Rather than selecting only by brand or model number, we recommend checking the key requirements for the system, including:

• Vessel material
• System pressure rating
• System temperature
• Dosing volume
• Connection size
• Wall-mounted or free-standing installation
• Available plant room space
• Indoor, outdoor or coastal exposure
• Ease of filling, venting and cleaning

FlowQuip offers both wall-mounted and free-standing stainless steel options, giving contractors and engineers a practical choice for new installations and replacement work.

Wall-Mounted vs Free-Standing Dosing Pots

A wall-mounted dosing pot can be a good choice where there is clear wall space, suitable fixing structure and enough room around the unit for filling and servicing.

A free-standing dosing pot can be easier where wall space is limited, where fixing to the wall is not practical, or where the unit is better positioned beside other plant equipment.

The FlowQuip range covers both options:

ADPOTSS8L: compact 8L wall-mounted stainless steel dosing pot

ADPOTSS15L: 15L free-standing stainless steel dosing pot

Why Choose FlowQuip?

FlowQuip supplies stainless steel dosing pots for New Zealand HVAC, hydronic and mechanical services applications.

Our dosing pots are designed for practical site use, with 8L and 15L options available for contractors, installers and maintenance teams working on sealed heating and chilled water systems.

FlowQuip dosing pots are:

• Built from 304 stainless steel
• Available in 8L wall-mounted and 15L free-standing models
• Suitable for heating and chilled water systems
• Designed for practical chemical dosing
• Easy to fill, vent and rinse
• Suitable for commercial HVAC applications
• Supported locally in New Zealand

Contact FlowQuip for project pricing, availability, technical information or help selecting the correct dosing pot for your system.

Frequently Asked Questions

What is a dosing pot?

A dosing pot is a small vessel used to manually add liquid chemicals into a sealed heating, chilled water or closed-loop HVAC system. It allows treatment chemicals to be introduced without shutting down major equipment or installing a powered dosing pump.

What is a chemical dosing pot used for?

A chemical dosing pot is used to add corrosion inhibitors, glycol, cleaners and other water-treatment chemicals into closed-loop systems. These chemicals help protect pipework, pumps, valves, heat exchangers and other components from corrosion, fouling and poor water quality.

Can a dosing pot be used on chilled water systems?

Yes. FlowQuip stainless steel dosing pots are suitable for sealed chilled water systems as well as heating, hydronic and other closed-loop HVAC systems.

Can a dosing pot be used on heating systems?

Yes. Dosing pots are commonly used on sealed heating systems to add inhibitor, glycol or other treatment chemicals into the circuit.

Do I need a dosing pump?

No. A dosing pot is designed for manual chemical dosing and does not require electrical power or a chemical dosing pump. The system flow carries the chemical treatment through the circuit after the dosing pot is reconnected.

What size dosing pot do I need?

FlowQuip offers 8L and 15L stainless steel dosing pots. The right size depends on the system volume, the amount of chemical being added and the dosing frequency. For larger commercial HVAC and hydronic systems, the 15L model is commonly selected.

Is the FlowQuip ADPOTSS15L wall-mounted?

No. The FlowQuip ADPOTSS15L is a free-standing 15 litre stainless steel dosing pot. This makes it useful where wall space is limited or where floor mounting is easier on site.

Is the FlowQuip ADPOTSS8L wall-mounted?

Yes. The FlowQuip ADPOTSS8L is a compact 8 litre wall-mounted stainless steel dosing pot.

What chemicals can be added through a dosing pot?

Typical chemicals include corrosion inhibitors, glycol, system cleaners, flushing chemicals and other closed-loop water-treatment additives. Always check compatibility with the system materials and follow the chemical supplier’s instructions.

Why choose stainless steel instead of mild steel?

Stainless steel offers better resistance to corrosion and does not add rust or iron contamination into the system. This helps reduce the risk of sludge, magnetite and poor water quality in closed-loop systems.

Where is the dosing pot installed?

A dosing pot is usually installed across the flow and return pipework of a closed system. It is isolated during filling and then reconnected so the system flow can carry the chemical into the circuit.

Can I use a FlowQuip dosing pot on systems with Caleffi or Flamco components installed?

Yes. FlowQuip stainless steel dosing pots are suitable for installation on sealed heating and chilled water systems that include common hydronic components such as Caleffi valves, Flamco air and dirt separators, strainers, filling assemblies and other mechanical services equipment.

The dosing pot is part of the closed-loop water treatment arrangement and is not dependent on the brand of valves or components used elsewhere in the system.

Can I replace an existing dosing pot with a FlowQuip dosing pot?

In many cases, yes. FlowQuip dosing pots can be considered when replacing existing chemical dosing pots commonly found on New Zealand heating and chilled water systems. Always confirm system pressure, temperature, connection size, available space and installation requirements before selecting a replacement.

Is a FlowQuip dosing pot a suitable upgrade to a Fabricated Products UK dosing pot?

FlowQuip stainless steel dosing pots can be considered as a suitable upgrade where an existing Fabricated Products UK chemical dosing pot is installed on a sealed heating or chilled water system.

The correct FlowQuip model should be selected based on pressure, temperature, connection size, dosing volume, available wall or floor space and site installation requirements.

Is a FlowQuip dosing pot an alternative to a Caleffi, Flamco or WaterPro dosing pot?

FlowQuip dosing pots are commonly considered alongside other chemical dosing pot options used in New Zealand HVAC systems. The FlowQuip range provides 304 stainless steel construction, 8L wall-mounted and 15L free-standing options, side-mounted circulation ports, a large filling funnel and a practical vent/rinse arrangement.

Is this dosing pot suitable for New Zealand HVAC systems?

Yes. FlowQuip supplies stainless steel dosing pots for New Zealand HVAC, hydronic heating, chilled water and mechanical services applications.

Where can I buy a stainless steel dosing pot in New Zealand?

FlowQuip supplies stainless steel chemical dosing pots in New Zealand, including the ADPOTSS8L 8 litre wall-mounted model and the ADPOTSS15L 15 litre free-standing model.