Spirotechnique – Mistral #9555
Spirotechnique – Mistral. This is the classic twin-hose regulator. It is the successor to the Spirotechnique Mistral, which only had a short production run. In contrast, this regulator was listed in the Spirotechnique catalogue until only a few years ago. In addition to the basic design of the original Mistral, the Royal Mistral features a port for a pressure gauge, and non-return valves (known as Aquastop) in the mouthpiece. This makes it easier to clear water from the hoses, and reduces the dead-space.