Bottom Check Valves ZSP-01

ZSP-1 valves are bottom check valves with a suction basket of industrial design, made entirely of 316L acid-resistant steel. They are produced in diameters DN50, DN80, DN100, DN150, DN200, DN250 and DN300 and are intended for installation on the suction pipeline in a vertical position. They prevent the product from flowing back into the tank and aerating the pipeline, and when installed in above-ground tanks, they also serve as an anti-outflow valve. They are made entirely of acid-resistant steel and do not have any elements that require periodic replacement, and are characterized by high tightness and reliability. They have been designed in such a way that suction occurs with a flat surface located at the bottom of the device. This allows you to minimize the dead state of the tank. The valve suction is protected by a mesh, which ensures that impurities are not sucked out of the tank and prevents elements from entering the valve. It has replaceable springs. As standard, it is delivered with the weakest one, which ensures low flow resistance and low force needed to open the valve. For applications where the suction pump is below the installation height of the suction basket and automatic outflow of the product may occur due to the difference in levels, a stronger spring is used, which prevents the automatic outflow of liquid from the pipeline and eliminates the need to use additional anti-flow valves in the installation.

Applicable Standards
  • ANSI/UL 80079-36

    Standard for Safety for Explosive Atmospheres - Part 36: Non-Electrical Equipment for Explosive Atmospheres – Basic Method and Requirements

  • ANSI/UL 80079-37

    Safety for Explosive Atmospheres - Part 37: Non-Electrical Equipment for Explosive Atmospheres –Non Electrical Type of Protection Constructional Safety c, Control of Ignition Source b Liquid Immersion k

  • EN 1127-1

    Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology

  • ISO 80079-36

    Explosive atmospheres Part 36: Non-electrical equipment for explosive atmospheres — Basic method and requirements

  • ISO 80079-37

    Explosive atmospheres Part 37: Non-electrical equipment for explosive atmospheres — Non-electrical type of protection constructional safety ''c'', control of ignition sources ''b'', liquid immersion ''k''

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