2.6.2.2
Gauge Glass
Gauge glass shall include top and bottom isolation valves fitted with
automatic checks, and packing followers; red-line or green-line gauge
glass; elastomer or polymer packing to suit the service; and gauge glass
guard.
2.6.2.3
Bull's-Eye and Inline Sight Glass Reflex Lens
Bull's-eye and inline sight glass reflex lens shall be provided for
dead-end liquid service. For pipe line mounting, two plain lenses in one
body suitable for backlighted viewing shall be provided.
2.6.2.4
Moisture Indicator
Indicator shall be a self-reversible action, moisture reactive, color
changing media. Indicator shall be furnished with full-color-printing tag
containing color, moisture and temperature criteria. Unless otherwise
indicated, the moisture indicator shall be an integral part of each
corresponding sight glass.
2.6.3
Vibration Dampeners
Dampeners shall be of the all-metallic bellows and woven-wire type.
2.6.4
Flexible Pipe Connectors
Connector shall be a composite of interior corrugated phosphor bronze or
Type 300 Series stainless steel, as required for fluid service, with
exterior reinforcement of bronze, stainless steel or monel wire braid.
Assembly shall be constructed with a safety factor of not less than 4 at
150 degrees C (300 degrees F) 300 degrees F. Unless otherwise indicated,
the length of a flexible connector shall be as recommended by the
manufacturer for the service intended.
2.6.5
Strainers
Strainers used in refrigerant service shall have brass or cast iron body,
Y-or angle-pattern, cleanable, not less than 60-mesh noncorroding screen of
an area to provide net free area not less than ten times the pipe diameter
with pressure rating compatible with the refrigerant service. Screens
shall be stainless steel or monel and reinforced spring-loaded where
necessary for bypass-proof construction.
2.6.6
Pressure and Vacuum Gauges
Gauges shall conform to ASME B40.100 and shall be provided with throttling
type needle valve or a pulsation dampener and shut-off valve. Gauge shall
be a minimum of 85 mm 3-1/2 inches in diameter with a range from 0 kPa (0
psig) 0 psig to approximately 1.5 times the maximum system working
pressure. Each gauge range shall be selected so that at normal operating
pressure, the needle is within the middle-third of the range.
2.6.7
Temperature Gauges
Temperature gauges shall be the industrial duty type and be provided for
the required temperature range. Gauges shall have Celsius scale in 1
degree Fahrenheit scale in 2 degree graduations scale (black numbers) on a
SECTION 15182
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