1 The 3/4 NPT input male thread is correct, but the output thread is
not correct. We need to be able to thread on a standard US garden
hose, and the output thread needs to be what is commonly referred to
as: 3/4" male hose connection.there should be 4-5 complete threads
usable for the connection. I am including photos here for
clarification. Please see "Sample 3"
2 We would like the output to exit the valve at 45 degrees, as opposed
to the 90 degrees in our prototype.
3. We had experimented with the ball valve design, with a key, but
without a "hand wheel" ourselves, but ultimately decided that this
design was unsuitable, before making the above drawing, and sending it
to you. We need a locking, "multiple turn" hand wheel design, so that
the hand wheel may be used to adjust flow.
The lock should work like this:
A. When the lock is secured, the valve may not be opened. If the valve
is open, it may be closed, even though the lock is secure. The valve
then will not open again without the key.
B. When the lock is open, the valve may be freely opened or closed
without the key.
4 The size and placement of the "hand wheel" relative to the input
thread must be adjusted so that it will not be impeded if the bib lock
is installed close to a wall. i.e. the "hand wheel" must be smaller
than the one shown in your earlier drawing. or, the distance between
the input thread and the hand wheel must be larger.
5. The polished, plated appearance is very nice, but our 'Hose Bib
Lock" is to be used outdoors, and in "Service" types of applications,
and as a cost saving measure, raw brass exterior may be just fine.
6. This valve will be used outdoors, and will obviously come into
contact with water. the lock mechanism must be made of material and
construction which will not allow it to corrode or deteriorate in
function for a service life of 15 years.
7. As it is a locking, water security device, it must be constructed
so that it can not be easily defeated by simply unthreading the valve
with a wrench.
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