Single Screen Manual
Automatic

Dual Screen Manual
Automatic

Quad Screen
Manual
Automatic

Six Screen
Manual
Automatic

Welded
Dual Automatic

Angled Flow Hand Operated Strainer -- Available in 2", 2 1/2", and 3" models.  Type AH Hellan Strainers employ a single handwheel equipped rotating screen and a rigid scraper bar to remove solids from the surface of the screen when the handwheel is rotated. A solids collecting sump is also provided. Cleaning of the type AH is accomplished by opening a valve on the sump flush connection and rotating the handwheel several times. The cleaning cycle must be performed when the strainer is under positive pressure. Type AH strainers are preferable installed in the vertical down-flow position as illustrated.

Size	Operation	Flow	Type	Outline Drawing	Pressure Drop Screen	Pressure Drop Wedge
2"	Hand-Operated	Angled	AH
2 1/2"	Hand-Operated	Angled	AH			N/A
3"	Hand-Operated	Angled	AH

Angled Flow Automatic Strainer -- Available in 3" models only. Providing hands-free operation, type AA Hellan Strainers employ a single, electric motor-driven rotating screen and a rigid scraper bar to remove solids from the surface of the screen when the screen is rotated. A solids collecting sump is also provided. Cleaning of the type AA is initiated when the motor and the flush valve operator are actuated. The cleaning cycle must be performed when the strainer is under positive pressure. Type AA strainers are preferable installed in the vertical down-flow position as illustrated.

Size	Operation	Flow	Type	Outline Drawing	Pressure Drop Screen	Pressure Drop Wedge
3"	Automatic	Angled	AA