KENCO ENGINEERING COMPANY
P.O. BOX 470426, TULSA, OK 74147-0426
PHONE: (918) 663-4406 FAX: (918) 663-4480
Website:
http://www.kenco-eng.com
E-mail:
INSTALLATION AND MAINTENANCE INSTRUCTIONS
FOR KENCO “KTV” TUBULAR GAUGE GLASS VALVES
INSTALLATION
Only qualified personnel who are familiar with gauge glass valves and their operation should undertake
installation of this product. Failure to properly install could result in serious injury and property
damage.
WARNING: UNDER NO CIRCUMSTANCES SHOULD THE KTV TUBULAR GAUGE
GLASS VALVES BE USED FOR STEAM-WATER APPLICATIONS UNLESS THE BALL
CHECKS HAVE BEEN REMOVED FROM THE LOWER AND UPPER VALVES.
Prior to installation, turn hand wheel of each valve clockwise to closed position. Install upper valve
(valve with deep glass insertion hole) and lower valve to vessel using Teflon tape or equivalent thread
sealing compound. Tighten valves making certain that the gauge glass connections are aligned
vertically. To install the tubular level gauge, turn the upper valve approximately 1/8 of a turn, and
loosen glass packing nut to insure there is no compression on the glass packing. Insert the tubular level
gauge into the upper valve sight glass connection. Tighten the upper valve to its original position while
holding the tubular level gauge in position to insure it clears the lower valve sight glass connection.
Loosen glass packing nut on the lower valve and lower the tubular level gauge down into the lower sight
glass connection to a positive stop. Tighten upper and lower glass packing nuts.
OPERATION
Make sure all connections are pressure tight. Correct any leakage before proceeding. Valves should be
opened slightly to avoid excessive thermal shock or mechanical stress on the tubular level gauge. After
gauge temperature and pressure has slowly been allowed to equalize with the vessel, valves equipped
with automatic ball checks must be opened completely to permit proper ball check operation in the event
of a gauge failure.
MAINTENANCE
The user should make maintenance schedules, safety manuals, and inspection criteria for each
installation of gauge valve sets. The user should set up a regular inspection of the following areas:
signs of leakage around the stem area, around the glass area, and signs of internal or external corrosion.
Stem packing leakage can often be corrected by tightening the stem packing nut. If leakage persists,
follow the steps detailed in disassembly of the valve. Signs of leakage around the gauge glass indicate
worn out glass packing or improper compression of the glass packing. If tightening the glass packing
nut does not stop the leakage then the glass packing must be replaced. To replace the glass packing,
follow the steps detailed in disassembly of the valve. Signs of internal or external corrosion could be an
indication of misapplication. An investigation should be carried out immediately to determine the cause.
It is the responsibility of the user to choose the gauge valve material compatible with the internal and
external environment. For broken sight glass replacement, review valve disassembly procedures.
