SYM DN 40 Suction Strainer (without check valve)

The SG DN40 suction strainer without a check valve is designed to secure a suction line when pumping from a reservoir, pond, cistern, or natural water source. It limits the entry of debris such as leaves, gravel, or floating objects to protect the pump and ensure smoother suction.

Its DN40 size makes it ideal for smaller-diameter suction lines, where the installation requires compact equipment that is simple to set up and easy to handle. This non-check valve version filters out impurities without a water column maintenance function.

Simple and robust, it integrates into pumping systems, technical tests, water top-up operations, or applications requiring effective protection of the suction line.

Key Features

• DN40 SG connection suitable for compatible suction lines.
• Valve-less version, designed for filtration without a water seal.
• Protects the pump against solid debris and floating particles.
• Compact design, ideal for installations with limited space.
• Quick and easy to use in suction configurations.

Technical Specifications

Application

• Suction of water from a pond, cistern, reservoir, or natural water source;
• protection of pumps against impurities;
• installation of suction lines with a diameter of DN40;
• pumping operations in outdoor, technical, or industrial settings;
• water supply to a mobile or temporary system.

FAQ – SG DN40 Suction Strainer without Check Valve

What is a DN40 suction strainer used for?

A DN40 suction strainer filters debris from the water before it enters the suction line. It protects the pump from leaves, gravel, floating objects, or particles that could interfere with pumping.

What is the difference between a strainer with a check valve and one without?

A strainer with a check valve keeps water in the suction line to facilitate priming. A strainer without a check valve only filters out debris, without retaining water in the pipe.

When should you choose an SG DN40 strainer without a check valve?

It is suitable when the system uses an SG DN40 connection and keeping water in the line is not necessary because the pump has an easy-to-use priming system.

Is this strainer suitable for mobile installations?

Yes. Its compact DN40 size is suitable for mobile, temporary, or small-diameter pumping setups, when the goal is to quickly protect the suction line.