Schlossbadi Frauenfeld

Reliable flow control for safe swimming pool operation

At Schlossbadi Frauenfeld, reliable water treatment meets practical innovation with durable GF valve solutions and the real world testing of the new Butterfly Valve 565 Big DN400. Dive into the full reference case below.

Reference Case H2O Innovation

Project background

Since opening in January 2024, Schlossbadi Frauenfeld has operated a large-scale water circulation system, moving around 6,800 m³ of water per day across its indoor and outdoor pools. The full water volume is renewed roughly every 1.5 hours. Maintaining this level of performance requires dependable valve and piping solutions throughout the entire system. This is particularly important in critical areas such as the suction pipes of the sports pools, where components must work reliably at all time, even after extended shutdowns like the winter break, to support a safe, trouble-free restart.

Selected technical solution

For this project, approximately 800 valves, including ball, butterfly and diaphragm valves, were installed, along with approximately 5.5 kilometers of ecoFit and ELGEF Plus piping components from GF. The setup includes manual and actuated ball valves from the 546 Pro and 542 series, diaphragm valves, metal and thermoplastic butterfly valves like the type 565, and VAG gate valves. As part of a field test during the development of the extended product range, the new Butterfly Valve 565 Big (DN400) was also installed on the suction pipe of the sports pool. This valve was specifically designed for large-diameter applications above DN300.

Achieved improvement

The installation of the Butterfly Valve 565 Big demonstrated strong reliability under real operating conditions. Even after extended periods of inactivity, the valve operates smoothly without jamming, effectively resolving a known issue in day-to-day operation. Combined with automated water treatment control, the corrosion-free design reduces maintenance efforts, supports stable flow conditions, reduces the need for manual intervention, and contributes to safer, more efficient pool operations overall.

Built for the bigger picture

The Butterfly Valve 565 Big covers dimensions from DN350 to DN600* for larger installations. Withstanding pressures up to PN10, we can offer the strongest thermoplastic butterfly valve with a short installation length in large dimensions. The lightweight materials and housing with Lug features facilitate installation, operation, and maintenance.

 

*DN450 - DN600 available soon

Butterfly Valve 565 Big DN400 installation

Customer benefits

Reliable operation

Smooth valve operation even after long shutdown periods

Low maintenance

Corrosion-free materials reduce servicing and manual effort

Stable performance

Consistent flow supports safe, efficient pool performance

What our customers say

Roman Frei

Head Technician, Schlossbadi Frauenfeld

"For us, the collaboration with GF is very important because they deliver professional products for swimming pool applications and, if anything happens, spare parts are available at any time."

Get detailed technical information in our Planning Fundamentals for Industry

The Planning Fundamentals for Industry contain the entire expertise on industrial piping systems of GF Industry and Infrastructure Flow Solutions and are divided into three books: "Design and Installation", "Valves and Actuators" and "Measurement and Control".

Georg Fischer Piping Systems Ltd

Ebnatstrasse 111

8201 Schaffhausen

Switzerland