Check valves
We provide industrial-grade solutions for various types of pipework. Our offer includes ZETKAMA zCHE check valves – high quality components that are suited for variety of applications within the above-mentioned area. The main purpose of those elements is to prevent uncontrolled backflow in the system, which could obstruct its proper functioning or even cause substantial damage to the infrastructure. This also proves to be essential in the case of contamination risk – as in sewage treatment plants – or a vacuum seal.
Industrial-grade check valves
Our zCHE components come in a wide variety of options in terms of the type of mechanism and the materials used. Our offer includes silent and disco variants, as well as models equipped with a ball, flap, throttle plug or two-lever. The materials used for construction were selected to achieve optimal performance in adequate work environment – we offer components made of stainless steel, cast iron – both grey and nodular – complemented with brass and bronze elements.
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Check valves are indispensable in modern fluid transport systems, serving as automatic devices that allow flow in one direction only while effectively preventing reverse flow. Their operation is based on the natural dynamics of the medium, requiring no external actuation. This fundamental function safeguards pumps, compressors, pipelines, tanks, and other infrastructure components from potential damage caused by backflow, pressure surges, or contamination.
Versatile Applications Across Industries
Due to their simple yet highly effective mechanism, check valves are used across numerous industries, including power generation, chemical processing, heating and cooling installations (HVAC), marine engineering, and wastewater treatment. Depending on the selected valve type and material, they are suitable for a wide variety of media, such as steam, compressed air, heating and cooling water, glycol mixtures, diathermic oils, as well as seawater and contaminated wastewater. The valves are compatible with both horizontal and vertical pipelines, depending on the construction variant.
Construction Types Tailored to System Requirements
The product category includes several structural variations of check valves, enabling precise adaptation to different operating conditions:
- Swing-type valves for general-purpose applications, often used in industrial and thermal installations.
- Ball check valves, particularly suited for sewage and sludge lines, ensuring reliable closure and self-cleaning operation.
- Silent disc valves, minimizing water hammer and ensuring smooth flow, especially in systems sensitive to noise and pressure fluctuations.
- Throttle-plug and two-lever types, offering specific flow control or tailored installation features depending on the model.
Each construction type is engineered to balance durability, flow efficiency, and system compatibility.
Robust Materials and Performance Parameters
ZETKAMA check valves are manufactured from grey cast iron, nodular cast iron, carbon steel, stainless steel, brass, and other corrosion-resistant materials. This diversity allows them to perform reliably under demanding conditions. Depending on the specific valve type, they offer:
- Nominal pressure range: PN 6 to PN 40
- Nominal diameters: From DN 15 to DN 500 (DN 600 optionally for flap-type valves)
- Temperature range: From –60 °C to +450 °C
This broad operating envelope ensures safe and effective application across thermal, aggressive, or contaminated media environments.
Standards and Installation Compatibility
All valves in this category meet the requirements of European and international quality standards, including:
- EN 12334 for general check valve tightness performance
- EN 12266-1, class D for high-integrity sealing
- EN 558 for face-to-face installation lengths (series 1, 8, or 48 depending on valve type)
EN 1092-1 and EN 1092-2 for flange compatibility across pressure classes and pipeline types
Such compliance ensures seamless integration into new and existing systems, particularly those built to EN or ASME specifications.
Maintenance-Free Operation and Hydraulic Efficiency
Many check valve designs within this series are fully maintenance-free, requiring no lubrication or adjustment. They offer low pressure losses due to optimized internal geometries, with full-bore and self-cleaning designs available for applications where minimizing flow resistance is critical. Silent or flap models further enhance operating comfort by reducing noise and vibration, especially during rapid flow changes.
Check valves are a key element in any pressure or flow-sensitive pipeline system. Whether the task is to protect industrial equipment, prevent contamination, or ensure system stability, the ZETKAMA product range provides technically precise, standard-compliant and field-tested solutions. Thanks to their robust construction, operational safety, and adaptability to various media and installation conditions, check valves remain a reliable and efficient choice in both standard and specialized industrial applications.