Submittal Sheet

ROLAIRTROL - Flanged Less Strainer
A - 326.8D
Page 3
TYPICAL ROLAIRTROL SPECIFICATIONS
Refer to submittal A-329 for information on
the MBV-1 manual blowdown valve.
Rolairtrol
®
Air Separator Performance Coverage Chart
RL MODELS (WITHOUT STRAINERS)
Note: Pressure drops for a range of flow are indicated on this chart. Users should select Rolairtrol using B&G published capacity guidance,
and ASHRAE pipe sizing recommendations for optimal performance.
Furnish and install, as shown on plans, a centrifugal type air
separator. The unit shall have _____" inlet and outlet flanged
connections tangential to the vessel shell. The unit shall have the
capability to direct accumulated air to the compression tank (air
control system) or air vent (air elimination system) via an NPT vent
connection at top of unit.
A blowdown connection shall be provided to facilitate routine
cleaning. Specify B&G Model MBV-1 Rolairtrol accessory with
appropriate fittings for manual blowdown.
Vessel shell diameter to be three times the nominal inlet/outlet pipe
diameter, with a minimum vessel volume for sufficient velocity
reduction.
The air separator must be designed, constructed and stamped for
125 psig @ 375 º F (862 kPa @ 191 º C) in accordance with Section VIII,
Division I of the ASME Boiler and Pressure Vessel Code, and
registered with the National Board of Boiler and Pressure Vessel
Inspectors. The air separator(s) shall be painted with one shop coat
of light gray air dry enamel.
Each air separator shall be Bell & Gossett Model No. _____ Rolairtrol
Air Separator for ______ GPM ( ______ m
3
), Shell Dia.
______" (______ mm) and Min. Vessel Volume ______ Gal (______
liters).
Xylem Inc.
8200 N. Austin Avenue
Morton Grove, IL 60053
Phone: (847)966 - 3700
Fax: (847)965 - 8379
www.bellgossett.com
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2013 Xylem Inc.