XS Scuba Thermo Pro H AdapterXS Scuba Thermo Pro H Adapter. Features: Standard yoke outlet with spin out DIN insert converts to 230 bar DIN outlet Attaches to all Thermo Modular valves Attaches to all XS Scuba Modular valves Right hand H adapter attaches to right hand modular valve Left hand H adapter attaches to left hand modular valve Clean for pre blended Nitrox up to 40% oxygen How to Build an H Valve: Purchase a Thermo or XS Scuba modular valve Purchase a Thermo H adapter A