How to fix a leak on your shut-offs under your sink.

There are a few different brands of shut-offs in the market today.  A few of them have a nut and packing gland and the other is of a ball valve style with a quick 90 degree turn and the water is off.  So,you have turned your water off to repair your faucet and see a leak on the valve.  If the valve is the older style which are still very popular today (a few turns to shut the water off) ; it maybe just a matter of holding the valve firmly and tightening the packing nut -giving it a one eighth turn.  These valves may even drip a little water when new,but the same procedure will cure your problem.  The other style valve would ha ve to be changed out if it is leaking as there is no gland,but an o-ring that makes the seal and prevents the water from leaking... little tip when changing the valve only and leaving the old nut and 5/8 furrele on is to take teflon tape and wrap the ferrule with two revolutions of tape.  This has helped me in the past many times.

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