INSTALLATION GUIDELINES
		USE  AND CARE
		DO's  and DO NOT's
FAILURE TO OBSERVE THE FOLLOWING DO's and DO NOT's  CAN
RESULT IN GLASS BREAKAGE AND ITS EXPLOSIVE RELEASE OF
PRESSURIZED SYSTEM CONTENTS & FLYING GLASS PARTICLES.
DO NOT	work on any gage until you have carefully read these warnings
	& instruction,
DO NOT	reuse any tubular glass, packing, or seals.
DO NOT	use glass that is scratched, chipped, or otherwise damaged.
	Used glasses may contain damage and are poor safety risks.
DO NOT	exceed the glass or gage manufacturer's recommended working
	pressures or maximum recommended gage glass length.
DO NOT	bump, impact or scratch the glass.
DO NOT	tighten gland nut and packing beyond gage manufacturer's
	recommendation.
DO NOT	operate gages unless gage valve sets are equipped with drain vent
	and safety ball check.
DO NOT	attempt to clean glass while the unit is in operation. Cleaning
	should be done without removing the gage glass.
DO NOT	attempt to inspect the glass, to adjust tie rods, packing nuts or
	glands, to inspect or tighten other fittings without isolating the
	gage from the pressure vessel and opening the drain vent.
DO NOT	weld, impact, or sandblast in the gage glass area without
	protecting the glass
DO NOT	have metal-to-glass contact
DO NOT	subject gage glass to bending or twisting stresses
DO NOT	allow the gage glass to contact the bottom of the packing gland.
DO	inspect the gage glass daily, keep maintenance records, and
	conduct routine replacement.
DO	install protective guards where necessary to protect personnel
DO	protect the outside of the gage glass from sudden temperature
	changes, such as drafts, water spray, etc.
DO	remove all deposits from the seal areas, the gland nuts, glands
	(where used) and use new packing before installing a tubular
	gage glass.
DO	examine gage glass for damage and seals for hard deposits
	and tears
DO	verify that the tubular gage glass, gland, nuts, packing, etc. are
	the correct size and type before installing
DO	ensure that system is protected by safety shut-off system
	(e.g. safety ball check).
PROTECTIVE GUARDS
A good safety practice is to incorporate a protective guard in the gage
glass assembly design. Refer to the gage manufacturer's catalog.
Sources: Corning Incorporated brochure "Tubular Gage Glasses"
Copyright 1991.