The overpressure valve can be installed on the Oscar II (water tank version). Installation requires very little equipment, we supply the kit OPV already fully installed and adjusted to 9 bar The OPV over pressure valve makes constant the extraction of coffee at 9 Bar, improves the extraction of coffee and the machine errors attributed to incorrect grinding. The pump will have more long time. This adjustable Over Pressure Valve (OPV) can be easily installed on the Nuova Simonelly Oscar II water tank version. Installation is quite simple. All of the materials needed to complete the installation are included. All you need are a few basic tools. Before we despatch the OPV kit we adjust the brew pressure to 9 bar. You can further adjust this +/- to suit your taste. The calibration of the valve 9 Bars OPV is made in our laboratory following a standard procedure. This calibration can change depending on the age of the pump or other factors. Note: - Extra charge pemasangan sebesar 500 ribu (teknisi datang ke lokasi) khusus wilayah Jadetabek - Untuk pemesanan dengan instalasi, OPV KIT akan dikirimkan terlebih dahulu lalu selanjutnya pengaturan jadwal dengan teknisi.