I really want to convert a eurolock-fitted external door to a yale
type action, ie for it to lock autmatically when closed, and open as
normal with a key.
Can it be done, are such units available anywhere?
Sounds like you want to retain the mortice fitting?
I have been looking for a high security nightlatch action with an option to
deadlock, ideally with a separate deadbolt, but it's been difficult. For me,
mortice fitting will be by far the strongest and a conventional key the best.
Chubb 3R35 - nightlatch action only which can be deadlocked, uses
standard mortice type key. Latch is beefy but only has a 10mm throw, not
enough in my view. It is has a high security detainer mechanism, but is
HUGE - a 150x80mm case. Often used in fire escape doors. (~100quid).
Assa High Security Eurolock - Unsure of code - One of the locks in this
range is a sashlock where the key can be used to retract the latch from
the outside. That means that the outside handle can be omitted and the
door opened with the key. Also has a separate deadlocking bolt. Problem
is that it appears only the 'escape' lock can use the key to open the latch.
'Escape' means the door can always be opened from the inside without a
key. I would overcome this disadvantage by fitting a separate BS 5 lever
deadlock to the door too. Another con is that it is a eurolock (poss avail as
oval too) so security is less than a true mortice, but is rated DIN level 4.
Have also found quite a few other nightlatches which are mortice key
operated but none that I have considered seriously as the latches appear
I'm still looking . . .
This isn't possible. It is the act of lifting the handle before locking that
engages all the security bolts. You'd need to have some sort of motor to do
this otherwise. You can get versions that go onto latch when closed and need
a key from the outside. However, they are not security locked unless you
lift the handle and turn the key.
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