Extremely reliable and versatile screen
series that accommodates a wide range
of municipal, industrial, institutional,
and intake flows.
Extremely reliable and versatile screen series that accommodates a wide range of municipal, industrial, institutional, and intake flows.
Grid Opening Range
The Bull Shark is known for its aggressive nature, ability to adapt to a wide range of environments, and skill in hunting in murky water. With a variety of grid types, opening sizes and models available, the Bull Shark Through Flow Screen is ideal in a wide range of environments. Low Flow, Standard, Heavy Duty, Super Duty and Front Discharge models are available.
Through flow design and large solid removal are trademarks of this versatile screen. All stainless steel construction and UHMWPE wear surfaces provide years of trouble–free operation. The extremely strong stainless steel grid reduces headlosses to well below industry standards.
The Heavy Duty Series is a robust version of the Bull Shark Standard Series. This model features heavy duty stainless steel axles, links, supports and drive and is designed to withstand harsher installations.
The Laced Link-style grid is ideally suited for water and wastewater applications where fine screening is required with low headlosses.
Flow passes through the screen while solids are intercepted and collected by the continuously moving grid. Solids larger than the openings in the screen’s grid are collected and form a mat, which is removed undisturbed from the flow resulting in extremely high solids capture and easy unloading.
A low profile bottom shoe and polypropylene brush seals the grid, preventing solids from bypassing under the screen. Flow is constantly presented a clean grid surface as solids are transported to the top of the screen. Screenings are discharged into screening handling equipment.
Minimal friction is achieved through the use of Ultra High Molecular Weight Poly Ethylene (UHMWPE) and stainless steel wear surfaces. Machined Delrin spacers precisely separate elements, eliminating metal-on-metal wear, reducing power and maintenance requirements and ultimately extending the life of the grid. Wide stainless steel tracks ensure years of trouble–free operation. Stainless steel grid elements provide superior strength while reducing area and headlosses. Heavy gauge stainless steel links are not susceptible to breaking and damaging downstream equipment.
Level sensing devices can be connected to variable speed drives to automatically compensate for high solids loading during peak flows or low flow conditions by proportionally speeding or slowing the grid travel speed. This increases the capacity of the equipment when needed and reduces wear, thereby extending the life of the equipment.
Our patented sealing system holds extremely tight tolerances between panels and grid to frame, eliminating the bypass of solids and intrusion of abrasive grit. We can ensure a tight tolerance down to 0.5mm in all locations of the screen, even those areas that other screens leave vulnerable.
The value of this design was tested by an independent national testing facility and was awarded the highest Screening Capture Ratio (SCR) of any bandscreen. Our 6mm screen received an SCR rating of 84% while our 2mm received an SCR rating of 93.25%.
Patented direct drives efficiently power the screen. Stainless steel sprockets support and pull the black UHMWPE Guide Links, resulting in little-to-no friction and long wear. Most importantly, no part of the drive touches the grid. Therefore, a bent grid element will not be compounded into a disabled screen.
Our highly effective spray wash is a superior method of cleaning the grid and prohibiting carry-over. Spray nozzles efficiently direct pressurized water over the width of the grid to positively remove all screenings and prevent carry-over. This method of discharge requires a relatively clean source of water to avoid clogging.
Low pressure deluge wash is a good alternative to spray headers if a source of clean water is not available. The deluge washer allows plant effluent or even screened flow to be used. This system also acts as a supply for screenings handling equipment.