It has an outer cover then the valve is inside that. It only turns like 1/4 then stops either way. Is that all is supposed to do? I’ve never used one of these before 
Looks like a peglar Yorkshire gate valve
But don’t hold me to that
Probably Wise words
Where’s TDJ to earn some of that sponsor money 
handy link
Probably Wise words
http://www.pegleryorkshire.co.uk/EN/Brands/Pegler/Compression_General_Valves/Gate_Valve/product/63_LS_Gatevalve_with_Lockshield_BS_5154B
Where's TDJ to earn some of that sponsor money ;-)
National Treasure
just wish I was better on my iphone at getting them
the reason it only goes a quarter turn is probably that it’s a cut off valve. it’s either open or closed?
I could tell you but it’s £60,00 + Vat for comuter consultations
That’s the bugger. It’s been added to completely isolate the water cylinder from boiler. PITA this system. Too many parts to go wrong.
Thanks.