As they leave the factory standard Apeks regulators are suitable for use with oxygen enriched gases providing the oxygen content does NOT EXCEED 40%*.

This gives the user a choice of the wider exhaust tee for minimal bubble interference (essential for underwater photography) and the narrow exhaust tee for a smaller compact comfortable  regulator (ideal for use as an octopus regulator). 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 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.A new swivel hose connection is available at an extra cost. This allows the demand valve end of the hose connection to rotate and pivot, providing a more comfortable fit. A new silicone exhaust valve has been sed on the XTX200 regulator improving breathing performance.First Stage Compact one piece body 4 angled medium pressure ports, 4 x 3/8" UNF 2 angled high pressure ports, 2 x 7/16" UNF Environmentally dry sealed system Attractive black and luxurious satin silver chrome finish Balanced for superior performance Removable ARCAP valve seat  Second Stage Adjustable cracking control Integrated venturi control Pneumatically balanced valve design Micro Adjuster Suitable for cold water use Bright Chrome Finish Right or Left hand hose configuration Metal Inserted front cover New Optional Extra Hose Swivel connection Changeable Exhaust Tees (DCE, Diver Changeable Exhaust) (Both sets supplied) Identical to the XTX100 except for model number decal Nitrox versions available