A water valve is like many fixtures in the home: rarely noticed until it fails and water starts dripping or even gushing out of the spigot. When a water Bellows Globe Valve needs repaired the problem is usually the rubber washers inside deteriorated or became unseated. Using a few simple tools and taking a bit of time can repair the valve instead of doing a more complicated replacement.
1 Shut the water supply off to the valve. Look for a valve upstream from the one you are repairing. If you don't find any, shut off the main water supply valve.
2 Open the faucet all the way. Place one wrench just beneath the packing nut of the gate valve. Place another on the valve itself. Turn the first wrench to remove the valve assembly.
3 Remove the faucet handle with your socket wrench by loosening the retainer nut. Place an adjustable wrench on the packing nut and loosen it. Slide the nut up the stem and off of the Cryogenic Gate Valve assembly.
4 Locate the packing washer inside the packing nut. Pry it out with a screwdriver.
5 Place a new packing washer inside the packing nut. Confirm that it is an exact match of the one you removed. Slide the packing nut back over the valve stem and screw it onto the valve assembly.
6 Place the valve handle back on the valve assembly and screw on the retaining nut. Tighten down with your socket wrench.
7 Ensure that the valve is fully open then screw the valve assembly back onto the valve. Place one wrench on the assembly and one on the valve. Tighten the valve assembly to the valve.
8 Tighten the packing nut until snug. Close the Knife Gate Valve and turn on the water supply. Examine to confirm that this fixed the leak.