View our ranges| Download brochure| Delivery| Frequently asked questions| National Press| Contact us

Frequently Asked Questions

1. What is the difference between a section and a column?
2. What is a bush/end cap?
3. What is a BTU?
4. What is the difference between Delta ‘Δ’ 50 and Delta ‘Δ’60?
5. Do I need a plumber to install my radiators?
6. Are Cast iron radiators as efficient as modern steel radiators?
7. Are the radiators guaranteed against defects?
8. Will cast iron radiators work with a microbore pipe work?
9. Can the radiators be painted in colours other than those quoted on the website?
10. Why does it take 2 – 3 weeks for my radiator(s) to arrive?
11. What if the paint finish is damaged during installation?
12. Are our cast radiators suitable for use with ground source heating systems?

1. What is the difference between a section and a column?

The section of a radiator is defined by the individual castings which are then joined together by threaded nipples, the picture below shows an example of a 7 section radiator.



Each section then has a number of columns please see examples below.







2. What is a bush/end cap?

The bush/end cap is the part which is fixed into the radiator to allow the valves to be fitted, the most common sizes required are 15mm (1/2”) or 22mm (3/4”) although some older pipe works may require other sizes. If this is the case an adaptor can easily be sourced through your local plumbers merchant.

3. What is a BTU?

A BTU (British Thermal Unit) is a unit of energy for measuring heat and is quoted per hour, this can also be measured in KW per hour. To convert from BTU to kW multiply by 0.000293, to convert from kW to BTU multiply by 3414.

4. What is the difference between Delta ‘Δ’ 50 and Delta ‘Δ’60?

This relates to the temperature of the water from the boiler, modern boilers will output at Delta 60, so all our BTU’s are quoted on this basis. Should you require Delta 50 figures , please contact us on 0808 178 5533

5. Do I need a plumber to install my radiators?

Cast iron radiators require the same plumbing techniques as the modern equivalent , so a competent DIY person can install them, although we do recommend using a plumber.

6. Are Cast iron radiators as efficient as modern steel radiators?

Although cast iron radiators take longer to heat up than steel radiators, they retain their heat for longer after they have been turned off, therefore keeping your room warmer for longer.

7. Are the radiators guaranteed against defects?

Yes, all radiators come with a 10 year Guarantee against manufacturing defects.

8. Will cast iron radiators work with a microbore pipe work?

As a rule they will work fine, but for large radiators it can be difficult to balance the system. We suggest discussing this with your plumber.

9. Can the radiators be painted in colours other than those quoted on the website?

Although many paints are not suitable for use on radiators, we can offer a wider range of paint finishes, although an additional cost may be charged.

10. Why does it take 2 – 3 weeks for my radiator(s) to arrive?

Each radiator is hand finished/built. We first spray the sections individually, assemble, pressure test and then apply the final coat of paint. As this is a very labour intensive process we do require 2 – 3 weeks to prepare your order.

11. What if the paint finish is damaged during installation?

On request we can supply touch up paints free of charge, please contact us if you require this.

12. Are our cast radiators suitable for use with ground source heating systems?

Due to the nature of cast iron radiators they retain the heat better than a modern equivalent and are an excellent choice for use with ground source heating systems.