Thank you very much for viewing. ★★High-quality air valve included★★ (SUS304) Elbow changed (see image 2) Brass (140kg) → Ultra-high pressure compatible SUS304 stainless steel (300kg or more) 17 Perfect Quon Dedicated Pressure Reducing Valve Air Take-out ⑦ Point Full Kit Our kit includes a special size bushing and air valve. The 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 leaks, internal link damage, etc.) There are problems, and it is necessary to adjust the pressure reducing valve to about 8Kgf/cm2 to 9Kgf/cm2. [17 Quon Pressure Reducing Valve Set Contents] ① Pressure reducing valve (regulator) ② High-quality air valve (SUS304 stainless steel) ③ SUS304 stainless steel elbow ④ One-touch coupler (domestic product) ⑤ Special size bushing screw ⑥ Seal tape ⑦ Installation manual with color photos will be enclosed [After-sales support is also available] The special size bushing screw was manufactured based on the original. 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 supports up to 16Kgf/cm2, so you can use it with peace of mind. The pressure reducing valve will be checked for operation at the time of shipment and will be shipped with a setting of approximately 8kg to 8.5Kgf/cm2. ・Elbow maximum working pressure 320Kgf/cm2 ・Air coupler maximum working pressure 15Kgf/cm2 In addition, we are not responsible for any accidents, injuries, damage, or any other incidents that may occur during installation. [Notes] Regarding receipts, we do not issue them as we are an individual seller. Please understand. The appearance varies depending on the company. Please check the images carefully and confirm that you can install it before purchasing. Please refrain from asking questions regarding the diameter and size of the screws. Please refrain from price reductions. [Regarding returns] Please contact us within one week for initial defects. Please check as soon as possible after receiving it. [Regarding shipping] Shipping will be done 1-2 times a day on Sundays and holidays. Shipped by Takkyubin Compact.