Water Intake Screen

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Water Intake screens,also called passive intake screens and wedge wire intake screens,are constructed of non-plugging V-shaped wires with continuous and smooth slots.Point welded onto the wedge wire support rod,intake screen supply large open area and low velocity flow through the entire screen surface.This reduces impingement and entertainment of debris while protecting aquatic life.The slot width ranges from 1 mm to 10 mm(0.04"to 0.4")and 3 mm(0.12")is the most common.Intake screens are regarded as the first safeguard of intake system to keep fish safe and protect pumps and turbines from harmful debris.They are both efficient and environmentally safe.
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Product Description

Water Intake screens are typically installed at the inlet point of a pumping system and are designed to protect pumps and other equipment from debris, contaminants in the lakes or water bodies, and to prevent aquatic animals from entering the pipeline.

Water intake screen primarily uses wedge wire as the filter screen. The continuous smooth V-shaped wedge wire ensures its open area and filtration effect. It also has self-cleaning and backwashing capabilities to reduce the risk of clogging, significantly improve maintenance efficiency and minimize the need for maintenance.

Based on the water flow rate and applications, SLOT offer T intake screens, half-barrel intake screens, I type intake screens, drum type intake screens and small pipe type intake screens.

Product Specifications

The dimensions of our products can be customized according to the design and purchasing needs of our customers

Material: stainless steel and duplex stainless steel
Slot size: 0.1/0.15/0.2/0.25/0.3 and up to 6.0 mm.
Diameter: 25 mm to 1500 mm
Wedge wire sizes：0.75mm*1.45mm 1mm*2mm 1.5mm*2.5mm or other size

Support rod sizes：2mm*2.3mm 2mm*3mm 3mm*5mm or other size

Common Specifications of Passive Intake Screens
Type	Capacity MGD (liters/sec.)	Screen Diameter inch (mm)	Overall Length inch (mm)	Outlet Diameter inch (mm)
T-type Intake Screen	1.0 (44)	12 (305)	44 (1118)	44 (1118)
	2.5 (110)	20 (508)	66 (1676)	20 (508)
	5.0 (219)	30 (762)	76 (1930)	24 (610)
	10 (438)	36 (914)	112 (2845)	30 (762)
	20 (876)	54 (1372)	156 (3962)	48 (1219)
	30 (1314)	60 (1524)	198 (5029)	54 (1372)
	60 (2629)	90 (2286)	276 (7010)	84 (2134)

Products & QC Photos

Product Advantages

Intake screen can play a significant role in providing water sources for various devices
SLOT Screens’passive intake screen operates continuously and requires no downtime for cleaning or routine maintenance

Maximum Efficiency

The combination of the non-plugging Vee-Wire design and the patented internal flow modifier, provides a high open area while maintaining the lowest entrance velocity and pressure drop. This delivers a maximum water capacity with minimal entrainment and impingement.
Less Maintenance

The controlled entrance velocity on the passive intake screen, along with the specially matched air backwash, keeps the system clean and operating properly
Custom Designed and Engineered

Application engineers from SLOT can provide design and application assistance. From shallow rivers to deep oceans, the Johnson Screens passive intake screen systems can meet site requirements anywhere in the world.
Lower Cost

The unique and flexible design of the passive intake screen system results in lower initial costs, no moving parts, less maintenance needs and a simplified installation — allowing for a reliable, inexpensive water supply.

Category

T Intake Screen
T-shaped profile with vertical slots or gaps

Performance：Effectively prevent larger debris from entering the system, with efficient water flow.
Application：Inlets for pumps and large cooling water systems in water treatment plants, nuclear power plants, etc.

Features： Suitable for environments with low space constraints and high-flow waters.
Half-Barrel Intake Screen
Open half-barrel shape

Performance：Effectively protect aquatic life and filter larger debris, especially in marine environments
Application：Suitable for low water level waters such as shallow streams and rivers, as well as the bottom of reservoirs..
Features：Installed in certain flow waters, and underwater environments where T-type cannot be installed
Drum screen
Small perforations or mesh to prevent the passage of fine particles and sediment

Performance：Prevent clogging and minimize the risk of system damage.
Application：Ideal for industrial and agricultural use, where water sources with high levels of fine debris need to be filtered
Features：Designed for smaller diameter intake pipes to maintain reliable filtration and flow rates.

Applications

High intake capacities are available with a fast production and shipping advantage.Intake Screens provide a very large area with surface and can be easily retrofitted for your applications.Intake screens are mostly placed easily near lakes or rivers to intake water.

The main applications of the water intake screen are:

Municipal water supply
Water treatment plants
LNG plants
Desalination
Paper & pulp
Sugar mills
Nuclear power plants

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