Complete Compiled Specification.pdf - Peck Ormsby Construction

PRESSURE GAUGES:
General: Provide pressure gauges which comply with ANSI B40.1.
Dials: Provide dials not less than 4-1/2 inches in diameter, except that packaged equipment may be provided
with manufacturer's standard gauges of equal accuracy.
Ranges: Select operating ranges so that during normal service the gauge pointer will be at the approximate
midpoint of the gauge scale.
Refrigerant Gauges: Provide refrigerant pressure gauges with corresponding temperature scales for the
particular refrigerant sensed.
Accuracy: Pressure gauges used for commissioning of other equipment shall have a minimum accuracy of 3
percent of span.
Gauge Cocks: All gauges shall be furnished with gauge cocks and pressure snubbers.
Gauges shall be Ashcroft, Trerice, or U.S. Gage.
PRESSURE & TEMPERATURE TEST PLUGS:
Plugs shall be brass body type with Neoprene, Nordel, or Vitron self-closing valve (to suit temperatures of fluid in
pipe). Test plugs shall be Pete's Plug or approved substitute. Furnish six pressure and six temperature
instruments to Owner to permit reading pressures and temperatures.
FLOW MEASURING AND BALANCING SYSTEMS:
Furnish and install complete the Venturi and calibrated orifice Flow Metering Systems as shown on the
drawings.
This shall be a coordinated system with individual Venturi Flow Stations supplied by one manufacturer and each
individual calibrated orifice supplied by one manufacturer.
On pipe sizes 3/4-inch diameter and smaller, provide calibrated balancing valves on runouts to fan coil units, fin
tube radiation, convectors and reheat coils.
Fittings shall be of the combination balancing and shut-off type with the balancing device positioned by an Allen
set screw or other approved method which permits closing of the valves without disturbing its balanced position.
Bodies may be of the globe or "Y" type with contour flow plug or approved equivalent.
Provide a graduated dial or other device to indicate the valve setting.
Gland shall permit packing under pressure.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDTION March 2, 2009
BASIC MATERIALS & METHODS 15050-14