Check valve for unit

To view YouTube contents on this website, you need to consent to the transfer of data and storage of third-party cookies by YouTube (Google).This allows us to improve your user experience and to make our website better and more interesting.Without your consent, no data will be transferred to YouTube. However, you will also not be able to use the YouTube services on this website.

To view Vimeo contents on this website, you need to consent to the transfer of data and storage of third-party cookies by Vimeo..This allows us to improve your user experience and to make our website better and more interesting.Without your consent, no data will be transferred to Vimeo. However, you will also not be able to use the Vimdeo services on this website.

To submit forms on this page, you need to consent to the transfer of data and storage of third-party cookies by Google. With your consent, reCAPTCHA, a Google service to avoid spam messages via contact forms, will be embedded. This service allows us to provide our customers with a safe way to contact us via online forms. At the same time, the service prevents spam bots from compromising our services. After you gave your permission, you might be asked to answer a security prompt to send the form. If you do not consent, unfortunately you cannot use the form. Please contact us in a different way.

Collection and provision of ratings

To send data to Brevo, you need to consent to the transfer of data and storage of third-party cookies by Brevo. This allows us to improve your user experience and to make our website better and more interesting.

This is a web analysis service. It allows the user to measure advertising return on investment (ROI) and track user behavior. Data collected: anonymized IP address, date and time of visit, usage data, click path, app updates, browser information, device information, JavaScript support, pages visited, referrer URL, location information, purchase activity, widget interactions.

This is an advertising service. This service can be used to display personalized or non-personalized advertising to users. With Google Ads Conversion Tracking, we can measure our advertising success in the Google advertising network. We place advertisements in the Google advertising network so that our offers can be found more easily. We try to optimize our advertising as much as possible. Also to keep advertising costs as low as possible. This is reflected in our prices.

This is a tag management system. The Google Tag Manager allows tags to be integrated centrally via a user interface. Tags are small sections of code that can track activities. Script codes from other tools are integrated via the Google Tag Manager. The Tag Manager makes it possible to control when a specific tag is triggered.

We are using a Java-Script Plugin from uptain GmbH (‚uptain-Plugin‘ https://www.uptain.de) for the improvement of the interaction with our visitors. This allows us to analyse your use of the website and improve the customer approach (e.g. via a dialogue window). We collect information about your usage behaviour, including cursor movement, length of stay, clicked links and (if applicable) information provided. The legal basis for the processing is our legitimate interest in direct marketing and providing our website (Art. 6 Abs. 1 lit f GDPR). As a processor uptain GmbH is acting on our behalf and is strictly bound by our instructions. We will not transfer the information to third parties (unless we are obliged by applying law). If and to the extend the information collected by the uptain-Plugin contains personal data this data will be deleted immediately after your visit to our website.

In order to unlock offers for extended payment options, in particular express checkout and payment in instalments, we require your consent to the data transfer and storage of third-party cookies of the payment provider PayPal. This allows us to also offer you express checkout and payment by instalments. Without your consent, only the technically necessary data transfer to PayPal will take place, but you will then not be able to use the express checkout or extended offers for payment by instalments on this site.