The valve positioners are a common component that is subject to mechanical wear and will eventually need to be replaced. Thankfully, Testo has provided a full kit to replace two of these positioner valves at a time. We have also provided their How-To video and written instructions so you can easily replace them yourselves. These are available in the Video and Documentation tabs located just under the image.
The 0554 5570 Manifold Valve Replacement Kit includes the following:
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
How To: Testo Manifold Valve Replacement