Air By-Pass Fume Hoods

Air By-Pass Fume Hoods

The Air By-Pass fume Hood automatically redistributes air above and below the sash, minimizing fluctuations in face velocity as the sash is raised or lowered. Ideal for lab work requiring delicate procedures. Uniflow Air By-Pass fume hoods are designed to direct and maintain a smooth uniform flow of air into the fume chamber and across the work surface. Aerodynamic airfoil and tapered sash opening assures efficient air flow through fume chamber.

The Uniflow Air By-Pass Fume Hood is equipped with a Variflow adjustable baffle with radius entry edges to reduce turbulence. Factory adjusted for general laboratory use, the Variflow baffle may be adjusted for specific airflow requirements.

The safety glass viewing sash is counterbalanced for effortless precise positioning to provide clear viewing and maximum operator safety. Diagrams below detail airflow characteristics of the Air By-Pass Fume Hood design.

AIR BY-PASS FUME HOOD SPECIFICATIONS	FUME HOOD SIZE Cat. No.
AIR BY-PASS FUME HOOD SPECIFICATIONS	48"	60"	72"	96"
1-Uniflow By-Pass Fume Hood with vapor proof fluorescent light. Molded, one piece seamless liner with coved corners for ease of cleaning. The superstructure is constructed of fire retardant, chemical resistant fiberglass, using a minimum of metallic parts. Easy touch vertical-raising viewing sash is constructed of 1/4" clear laminated safety glass with frame and track fabricated of chemical resistant plastic. Optional clear chemical resistant acrylic viewing sash is available for hydrofluoric applications. Air By-Pass Fume Hood is equipped with variflow baffle to efficiently direct air through fume chamber, baffle is easily removed for cleaning. System includes induced air plenum and automatic air by-pass. Vapor proof two tube fluorescent light fixture mounted behind glass panel with column mounted control switch. Hood is shipped completely assembled. Also offered in 48" high Low Profile Model. All electrical services are U.L. approved (installed but not wired, must be wired to comply with local codes).	21411	21511	21611	21811
	Low Profile
	31411	31511	31611	31811
2-Uniflow By-Pass Fume Hood with vapor proof fluorescent light and built-in exhaust blower. Same as above- except euipped with built-in fiberglass exhaust blower with polypropylene impellar wheel and column mounter control switchs. Blower motor to be 115 volt, 60 cycle, A.C. Other blower motor sizes available upon request. Blower and switches are U.L. approved and installed but not wired, must be wired to comply with local codes. Available with horizontal or combination sash option.	21412	21512	21612	N/A
3-Uniflow By-Pass Fume Hood with explosion proof light. Same as No. 1 above-except equipped with explosion proof incandescent light. U.L. approved Class I, Group C&D, Class II, Group E, F, &G. Electrical fixture is installed but not wired, must be wired to comply with local codes. Switch not included.	21413	21513	21613	21813
	Low Profile
	31413	31513	31613	31813
4-Uniflow By-Pass Fume Hood with explosion proof light and built-in explosion proof exhaust blower. Same as above except equipped with self-contained explosion proof motor blower. Explosion proof blower motors 115 volt, 60 cycle, A.C. Other explosion proof blower motor sizes available upon request. U.L. approved Class I, Group D, Class II, Group E, F, & G. Blower and fixture installed but not wired, must be wired to comply with local codes. Switches not included. Not offered in Low Profile Model.	21414	21514	21614	N/A
Horizontal Slidind Sash Option. Add Suffix Cat. No. - Suffix #	HS-4	HS-5	HS-6	HS-8
Combination Sliding Sash Option. Add Suffix Cat. No. - Suffix #		CS-5	CS-6	CS-8