Valve Repair

Portions of the valve stem on an OS+Y gate valve are smooth because ______.

• it looks workmanlike

• it makes the stem glossier

• it makes the valve work faster

• it provides a smooth sealing surface

The component that physically stops the flow of water when the valve is closed is the ______.

• gland follower

• gate

• gland bolt

• stuffing box

Tightening the gland follower bolts _______.

• compresses the packing

• expands the packing

• does nothing to the packing

• compresses the valve handwheel

The tool most commonly used to remove the old valve packing is _______.

• a spud wrench

• a post indicator wrench

• a packing extractor

• a valve packer

Valve packing ________.

• is available in one size and type only

• size and type varies by valve

• is always made of Teflon

• is always precut

The ends of the valve packing rings ______.

• should be carefully aligned together

• should be frayed

• should be staggered 90 degrees

• should overlap by 20 percent

After installing the new packing and reinstalling the gland follower, the gland bolts should be tightened _______.

• to 50 ft./lbs.

• to 75 ft./lbs.

• to 100 ft./lbs.

• until the valve stops leaking

You can access the valve stem and valve gate for removal, repairs or replacement by ______.

• removing the gland follower

• unbolting the valve from its flanges

• removing the handwheel and bonnet

• taking off just the handwheel

The stuffing box of a valve is ______.

• where the valve packing is placed

• where the flange bolts are found

• where the bonnet bolts are accessed

• where the handwheel is found

The handwheel opens and closes the valve _______.

• by compressing the valve flanges

• by moving the valve stem connected to the gate

• by tightening and loosening the gland follower bolts

• by rotating the valve packing within the packing box