Via cocks, shut-off valves, valve manifolds or monoflanges, pressure measuring instruments can be securely separated from the process during commissioning, maintenance or calibration. Protective devices, such as syphons, overload protection and snubbers, increase the service life and extend the application spectrum of pressure measuring instruments. In addition to the extensive selection of instrumentation valves and accessories, WIKA also offers the qualified assembly of various individual parts to form a complete measuring assembly (“instrument hook-up”).