Yes, if you have the Inspector role or above, you can add a new check-valve control activity to a Location's control scheme. You do this by opening the Location's Control Schema, selecting Add activity, choosing the appropriate Activity type, defining the Applies to scope (such as specific locations or assets), setting a Frequency, and then Save to create the activity which will start as To do and be ready for scheduling.
If you are using the mobile app on site, an Inspector or higher can open the Location's structures screen, tap Schema on the Structure's toolbar, then use Add activity to create the task and set its details before saving.
If you do not have sufficient rights, an Inspector, Manager, Admin, or Owner on your team can perform this action. You can find and manage these activities on the Location's Control Schema page in the web app or via the mobile app under the relevant Structure. The activity you add yourself will be identified as a custom activity which you can also delete later if needed.