Truflo Valves Limited

In a blowdown system, there are few critical valves exist. Usually ball valve and needle valve have been used. One of the repo valve used in hydro station is Truflo Valves Limited. 

Are this OEM player still exist in the hydro power plant industry? As I noticed it is quite difficult to find whether to purchase complete set of valve or their parts. 

Do you have facing same problem with this OEM in terms of their support or parts to purchase?