Does the drain off valve need to be screwed in tight

[Kevdiy123]

Hi Experts
I am replacing a leaking drain of valve. However when I screw it in to the radiator it does not tighten in suitable position. I.e. drainage point facing up and the screw to open valve against the wall so you cannot reach it. If I leave it in suitable position it is not tight.
Any ideas how I can get it to tighten in a suitable position or is it OK loose (I assume not).
I am restricted with space so this is the only type.of valve that will fit

 

[Kevdiy123]

Second attempt at picture

 

[CBW]

How many wraps of ptfe are you using?

 

[Kevdiy123]

How many wraps of ptfe are you using?

None, just some lsx

 

[terryplumb]

PTFE tape wrapped enough times around the thread will allow you put it in the position you want.
Try 14/15 turns.

 

[nitro23456]

As above or better still some loctite hemp tape. I wouldn't be lsx-ing that in.

 

[Kevdiy123]

Went with ptfe tape and feels pretty tight. Water goes on tomorrow so will find out then

 

[Kevdiy123]

No leaks so looks like it did the trick