Stainless steel 5-way sprung non-return valve with 1x male thread (inlet), 1x female thread (pressure pipe, angled), 1x female thread 1" for the pressure vessel (on top) and 2x female thread 1/4" (pressure sensor and manometer). Specially made to combine with a frequency converter with separate pressure sensor.

A frequency converter with a separate pressure sensor works best in combination with a small pressure vessel. This non-return valve actually has all the connection options to realize such an arrangement simply and effectively.