Thank you very much for viewing. Elbow change (Image 2) Brass (140kg) → High-pressure SUS304 stainless steel (300kg or more) Our kit includes a special size bushing. [Sold separately] Air valve (+1,999 yen) is also available. With a maximum pressure of 60KG or more, even if there is a sudden air leak, you can stop it by simply turning the valve 90° (Image 10), providing peace of mind. Current Quon (April 2017) has an air pressure of approximately 12Kgf/cm2, and in the case of an air horn, it may not operate properly (sound distortion, diaphragm damage, solenoid valve malfunction). Kishun valve (malfunction, air leak, internal link damage, etc.) There are problems, and it is necessary to adjust it to about 8Kgf/cm2 to 9Kgf/cm2 with a pressure reducing valve. [Pressure Reducing Valve Set Contents] ① Pressure reducing valve (regulator) ② SUS304 stainless steel elbow (high pressure 300kg or more compatible) ③ One-touch coupler (domestic product) ④ Special size bushing screw ⑤ Seal tape ⑥ Installation manual with color photos will be enclosed. [After-sales follow-up is also possible] The special size bushing screw was manufactured based on the original (domestic product). The bushing screw can be used for both blind plugs and test nipples. The pressure reducing valve is certified by the international standard ISO9001/2015 (quality) and can handle up to 16Kgf/cm2, providing ample margin for safe use. The pressure reducing valve is checked for operation at the time of shipment and will be shipped set to approximately 8kg to 8.5Kgf/cm2. ・Elbow maximum working pressure 320Kgf/cm2 ・Air coupler maximum working pressure 15Kgf/cm2 Please note that we are not responsible for any accidents, injuries, damage, or any other issues that may occur during installation. [Notes] We do not issue receipts as we are selling as an individual. Please understand. The appearance varies depending on the company. Please check the images carefully and confirm that it can be installed before purchasing. Please refrain from asking questions regarding the diameter and size of the screws. Please refrain from asking for discounts. [Regarding Returns] Please contact us within one week for initial defects. Please check as soon as possible after receiving the item. [Regarding Shipping] Shipping will be done 1-2 times a day on Sundays and holidays. Shipped by Takkyubin Compact. Thank you for viewing until the end.