200 Litre Buffer Tank
200 Litre buffer tank
200 litre buffer tank in 304 stainless steel from Flexiheat UK
Our 200 litre buffer tank, which is manufactured from 304 stainless steel, is rated for a maximum 6 bar working pressure and a maximum temperature of 95°C. They also have a class-leading ErP insulation rating of “A” for energy efficiency, resulting in very low heat loss; similar products are rated “B” at best. These buffer tanks are designed for heating and/or cooling systems and come with four x 32 mm (1 1/4″) main connections for easy installation.
Heat pump systems
Generally used in a heating system for heat pumps, be they air source or ground source heat pump applications, to improve the coefficient of performance by being a thermal energy storage tank. These 200 litre buffer tanks also can be used for biomass boilers (a renewable energy) or solar thermal systems (also a renewable energy HVAC heating) as well. These 200 litre capacity buffer tanks come with an immersion heater port for additional heat sources.
Stainless steel buffer tanks have no internal enamel or painted coating that can become damaged or deteriorate.
200 Litre buffer vessel product details
Our 200 litre capacity buffer vessel/tank with an ErP insulation rating of “A” features the following technical details:
Technical features
| Specification | 200 litres capacity |
| Inner tank material | AISI 304 stainless steel |
| Insulation | 50 mm rigid polyurethane foam, CFC-free |
| Cylinder casing | Frosted metal, colour RAL 7030 |
| Maximum operating pressure | 6 bar |
| Maximum operating temperature | 95°C |
Dimensions of the 200 litre buffer tank
200l buffer tank connections and port details from Flexiheat UK
| Ref. | DN | Connection | Description | Dimension size |
| H | — | All female BSP | Buffer tank – total height | 1325 mm |
| ØD | — | — | Buffer tank outside diameter | 560 mm |
| Ød | — | — | Buffer tank inside diameter | 470 mm |
| H | DN 14 | G 3/4″ | Pressure relief valve port | 1325 mm |
| B | DN 3 | G 1 1/4″ | Connection (Inlet/Outlet) | 1000 mm |
| F | DN 9 | G 1 1/4″ | Connection (Inlet/Outlet) | 1000 mm |
| C | DN 5 | G 1/2″ | Temperature sensor port | 890 mm |
| D | DN 7 | G 1/2″ | Temperature sensor port | 450 mm |
| L | DN 6 | G 1 1/2″ | Immersion heater port | 360 mm |
| A | DN 4 | G 1 1/4″ | Connection (Inlet/Outlet) | 250 mm |
| E | DN 8 | G 1 1/4″ | Connection (Inlet/Outlet) | 250 mm |
| G | DN 2 | G 1/2″ | Drain port | 33 mm |
Our manufacturer part number for this 304 stainless steel 200 litre buffer tank is FH2032001021.
Front view of our 200l buffer tank in 304 stainless steel showing port locations from Flexiheat UK
Stainless steel construction and why?
A stainless steel buffer tank is generally considered better than a mild steel buffer tank because it offers much greater corrosion resistance and can provide a longer, lower-maintenance service life.
Other advantages of stainless steel include:
- Longer potential service life when correctly installed.
- No internal enamel or painted coating that can become damaged or deteriorate with stainless steel buffer tanks.
- Reduced production of rust, magnetite and corrosion debris.
- A smoother internal surface that can help keep the heating water cleaner.
- Excellent suitability for heating and chilled-water systems.
- Good resistance to external corrosion, which is useful where chilled-water tanks are exposed to condensation.
- Stainless tanks can often use thinner wall sections, reducing vessel weight.
However, mild steel remains perfectly suitable for many correctly designed and maintained sealed heating systems.
Mild steel construction and the cons of it for a buffer tank
Mild steel construction buffer tanks installed in a properly commissioned closed heating system, the oxygen content of the water quickly becomes very low. With a suitable corrosion inhibitor, correct pressurisation and minimal fresh-water top-up, a quality mild-steel buffer tank can achieve a very long working life.
However, the problems tend to arise where systems continually take in fresh oxygenated water through leaks, automatic filling arrangements or poor maintenance.
The cost of quality – your heating system and your choice
For most heating applications, the choice comes down to initial cost versus long-term durability. A mild steel 200 litre buffer tank provides an economical solution for a correctly maintained closed system, whereas a stainless steel 200 litre buffer tank offers greater corrosion resistance, reduced maintenance risk and potentially much longer buffer tank life.
Top tips for air source heat pump installations
A properly sized thermal expansion vessel is a common safety component in buffer tank setups.
Installing a buffer tank requires an appropriate hydraulic piping configuration for efficiency.
Air trapped in a buffer tank can reduce heat transfer efficiency.
Routine maintenance of a buffer tank should include checking for leaks and monitoring pressure.
Buffer tanks can store thermal energy captured during off-peak times.
Contact us for your hot and chilled water buffer tank 200 Litre capacity requirements
If you require further information, confirm any questions, check product availability and stock levels, get a quote, deliver times, find prices or order our 200 Litre buffer tank designed for heat pumps (which has the main function of improving the operating efficiency of heat pump systems by reducing compressor pump short cycling, as the buffer function reduces the heat pump’s on/off cycles for hot water or cold water production) or boilers, and acting as a hydraulic separator.
You are welcome to contact our customer sales team on this number, 01202 822221, or use our email contact form.
