Warren Controls 377 Float Cage - Manual (Page 4)

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2600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
OPERATiON – 377 FLOAT CAGE AND 326L OR 322L LEvER vALvE
• A rising or falling liquid level in a tank raises or lowers the float ball in the 377 Float Cage. This motion is converted
to force through the rotation of the float rod and lever arm (lever) about the float shaft assembly. The force is
transmitted through the turnbuckle assembly to the lever actuator of a 326L or 322L Lever Valve where it is
used to open or close the valve. Fully immersed in water the float can exert approximately 150 inch-pounds of
torque onto the float arm shaft. The maximum rotation of the float arm shaft is 23
o .
iNSTALLATiON – 377 FLOAT CAGE AND 326L OR 322L LEvER vALvE
• To determine which lever valve you have locate the part number (configuration) on the factory serial number
label (See Information Present on 326L Lever Valves section or Information Present on 322L Lever Valves
section for location of important information on valve). Then see 326L Lever Valve Specification section or
322L Lever Valve Specification section to determine the performance and physical characteristics of the valve
(configuration). See the 377 Float Cage Specification section to determine the performance and physical
characteristics of the 377 Float Cage.
• Be sure that the flow medium, pressure, and temperature will not exceed the limits of the 377 Float Cage.
Information can be found in the product specifications (See 377 Float Cage Specification section).
• Be sure that the flow medium, pressure, and temperature will not exceed the limits of the 326L or 322L Lever
Valve. Information can be found in the product specifications (See 326L Lever Valve Specification section or
322L Lever Valve Specification section) and on the flow diagram plate regarding these limits (See Information
Present on 326L Lever Valves section for location of important information on valve).
• Eliminate vibration in piping. 377 Float Cages and 326L or 322L Lever Valves are not suitable in installations
where vibration exists.
• Follow good piping practices. Install a bypass around the 326L or 322L Lever Valve. Install stop valves in the
inlet and outlet piping to provide a means to isolate the lever valve.
• A straight run of pipe is recommended for 10 pipe diameters upstream of the 326L or 322L Lever Valve and 20
pipe diameters downstream of the 326L or 322L Lever Valve.
• Protect 326L or 322L Lever Valve and downstream equipment with a self-cleaning strainer.
• Install gauges in inlet and outlet piping of 326L or 322L Lever Valve to provide means for checking adjustment
and operation.
• Before installing, be sure the 377 Float Cage, 326L or 322L Lever Valve and piping are clean inside and free of
scale, chips, welding spatter, and foreign material. Thoroughly blow out or flush pipe lines.
• Pipes must be aligned squarely with the 377 Float Cage and 326L or 322L Lever Valve at each connection.
• If the lever valve has screwed ends, do not apply pipe dope to the threads of the valve body or to the first two
threads of the pipe.
• If the lever valve has flanged ends, tighten flange bolts evenly to prevent excessive stress and the possibility of
cracking.
• Do not obscure factory serial number labels with paint. If flow diagram plates or inlet markings will be covered
with insulation, it is recommended the information on the plates and markings be transcribed on the outside
of the insulation in the same location as the plate or marking