Isolation valves before the radiator

[Manos]

Hello. Can anyone tell me what kind of isolation valves to put before the radiator pipes (about 2 meters away) inlet & outlet . The reason for this is I want later on to put another small radiator on the hall way and don't want to take all water out. Thanks

 

[Last Plumber]

If these are not on show use gate valves or full bore ball valves. I prefer Gates on Heating to be honest.

 

[Best]

As above ^^ if out of view then Full flow valves like lever valves that have seals that won't perish with heat or just normal gate valves. Both types are very similar money.
Never fit the cheap ballofix isolating valves because they can't take heat, will leak or often break if used and are restrictive narrow bore.