Apeks double reguset annual maintenance (2 pcs pressure reducer + 2 pcs breathing valve). Includes maintenance kits parts and work. 1. Order and pay for the maintenance or service product you want in our online store. At the online store checkout, select the delivery method you want the serviced product to be delivered to you. 2. Send the item to us with the carrier of your choice at your own expense or bring it to our store. Varuste.net Malminkartanontie 1 00390 Helsinki Finland 3. Include in the package a copy of your order confirmation or at least a handwritten note containing the order confirmation number and a mention that the item is coming for maintenance. 4. When the item arrives at us for maintenance, we will try to service it according to the product's delivery time estimate. We will inform you of the tracking number of the package when we send the serviced item back to you. If you wish, you can also bring the product directly to our store, in which case a pre-order through t