"All my Bulldog trv's had failed and the heating was out of control and using way too much lpg. I went to Screwfix in Lancaster to buy some new ones and the staff pointed me to these as being good value. I bought 17 of them and they work flawlessly. A great product at a great price"
"I bought two of these to replace old, failed, TRVs and was impressed with the simplicity of the instructions. The valves themselves were easy to fit once the old ones were out of the way and they came with caps that allow the valves to be manually set to a specific level. The only thing they don't have is pins to set upper/lower limits, but otherwise they perform flawlessly, shutting down the radiator once the room's warm enough, and opening it up when it's cold. Adjustment to a particular temperature is easy and the setting can be made to a fine degree. At the price, very good value."