not knowing your exact model you shud turn off the water remove the
handle(set screw or a screw right in the middle under the plastic cap) and
you shud see a ring that you remove and under that once removed a cartridge.
behind that you shud see maybe a couple of rubber washers with springs
behind them and shud be included with your kit, remove and replace them and
slip the cartridge in , replace the ring and tighten it down, replace the
handle and turn the water back on.
if its got the antiscald it could be off to the left or right and have a
screw head or a hex head for removal. Its pupose is to stop scalding when
someone gives a flush while you shower and it meters the hot water with the
cold.
"davex1001" wrote in message
ups.com...
Thanks for the response. This was installed before I moved in. I've
been here 7 years. So I don't know if it has this feature or not.
What's involved with replacing the cartridge?

bob kater wrote:
does your delta have the anti-scald feature?? if so its probably that
spool
partially plugged up or not moving. If you do not have that feature its
probably the piece behind the handle (cartridge) its all in one piece and
shud take 5 minutes afer you shut the water off
"davex1001" wrote in message
oups.com...
Hello. Our shower has a Delta faucet with a single handle. This was
an upgrade from a tub to a tub and shower so the diverter is not on the
spout but just below the handle. Recently we've experienced a drop in
water pressure as you call for more hot water. This happens whether
the water is going thru the shower head or the spout. For a laugh I
took the head off and soaked it in vinegar. Didn't make a difference
not that I expected it to. All the valves in the basement are open.
The sink gets good hot water pressure. Seems like it's the valve. I'm
not much on plumbing. How difficult is it to replace a valve like
this? Or could it be something else? Any thoughts?? Thanks.