Single Screen Manual
Automatic

Dual Screen Manual
Automatic

Quad Screen
Manual
Automatic

Six Screen
Manual
Automatic

Welded
Dual Automatic

Inline Flow Hand Operated Strainer -- Available in 20" models only.  Type HH Hellan Strainers employ six handwheel equipped rotating screens and rigid scraper bars to remove solids from the surface of the screen when the handwheels are rotated. A solids collecting sump is also provided. Cleaning of the type HH is accomplished by opening one, two, or three valves on the three sump flush outlets and rotating the handwheels several times. The cleaning cycle must be performed when the strainer is under positive pressure. Type HH strainers are preferably installed in the vertical up-flow position.

Size	Operation	Flow	Type	Outline Drawing	Pressure Drop Screen	Pressure Drop Wedge
20"	Hand-Operated	In-Line	HH

Inline Flow Automatic Strainer -- Available in 20" models only. Providing hands-free operation, type HA Hellan Strainers employ 6, electric motor-driven rotating screens and rigid scraper bars to remove solids from the surface of the screens when the screens are rotated. A solids collecting sump is also provided. Cleaning of the type HA is initiated when the screen drive motors and the flush valve operators are actuated. Controls to accomplish these electrical functions are required. The cleaning cycle must be performed when the strainer is under positive pressure. Type HA strainers are preferably installed in the vertical up-flow position.

Size	Operation	Flow	Type	Outline Drawing	Pressure Drop Screen	Pressure Drop Wedge
20"	Hand-Operated	In-Line	HA