The SI TECH Shell Inflation Valve is a high performance valve suitable for all areas of recreational and technical diving.

• Push button, Large guide ridge
• International QD nipple
• 360° Swivel
• Includes attachment nut, anti-friction washer and nipple cover
• Thermoplastic alloy of amorphous polycarbonate and semi-crystalline polyester (PC/PBT) material

The SI TECH Shell Inflation Valve is a high performance valve suitable for all areas of recreational and technical diving. 

The easy accessible push button provides smooth and controlled flow of gas. The 25210 version offers a 360° rotation and international QD nipple, with a low push button and large guide ridge plus anti-friction washer and nipple cover. This push button version is popular as the diluent manual addition valve on rebreather counter lungs.

• Shell total height is ~ 41 mm of which the lower part attachment nut is ~17 mm and the upper part valve is ~24 mm; total width is ~ 65 mm with large guide ridge.
• Diameter of the mounting hole is ~ 33 mm. (FYI, the SI TECH valves are NOT compatible with APEKS valve ports; the APEKS mounting hole has a diameter of ~ 37 mm.)
• Due to the thread length on the valve, we recommend limiting installation of this valve to material thicknesses not exceeding 5 mm.
• Construction is thermoplastic alloy of amorphous polycarbonate and semi-crystalline polyester (PC/PBT) material.