The XTX200 regulator incorporates a new front cover manufactured using high strength plastic which greatly improves the durability of the most vulnerable part of the demand valve and an aesthetically pleasing chrome plated metal insert immediately identifying this regulator as a top of the range model. The new purge button has improved the purge itself. Due to the new open design the purge is self clearing and prevents debris build-up. The new ergonomic Venturi lever of the XTX200 has been designed to reduce the amount of grit ingress and also incorporate an index-able, tactile / audible ratchet Venturi lever mechanism.