Flow and return valve cap ?

[diycooper]

On my flow valve on my vailliant eco tec pro 28 boieler it is loosing it thread for a flat screw driver, Is there any caps you can get like on other boiler valves the ones like on washing machine valves ?

 

[Boilerman2]

Vaillant sell new valves as a spare part, some ecotecs have the filling loop connection built in to the valve body so it is a special part

the reason that the screwdriver slot is worn and that is simply the wrong size of screwdriver has been used to turn the valve

make sure the flat blade screwdriver is the right size to fit snugly into the valve slot!!

 

[diycooper]

Would it be ok to cut 2 new 22mm isolation valves undenesath boiler on flow and returns. This way if I ever need to isolate I can use these ?