Truflo Valve 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. 

Main Inlet Valve

Main inlet valve or shortly we say MIV is the spherical valve which installed before water enter into spiral casing of the hydro turbine.

Above are some pictures of main inlet valve in hydro plant.  Is it worth to buy a spare for this equipment? How much it cost for one unit of this MIV? Please share it here if you have some experience on this.

Main Inlet Valve - MIV 

What is the Main Inlet Valve?

Main inlet valve or shortly we say MIV is the spherical valve which installed before water enter into spiral casing of the hydro turbine.

Main inlet valve or MIV at hydro power plant.

Water from the dam go to the penstock and before water enter the turbine, MIV is a component in between stop the water for small maintenance purpose in the turbine hall.