Thank you very much for viewing. Elbow change (Image 2) Brass (140kg) → High-pressure SUS304 stainless steel (300kg or more) [Sold separately] Air valve (+1,999 yen) is also available. Maximum working pressure 60KG (Image 9) We will change the set price if you comment. The current 24 Super Great (October 2023) has an air pressure of approximately 13Kgf/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 defects and it is necessary to adjust to about 8Kgf/cm2 to 9Kgf/cm2 with a pressure reducing valve. [Pressure Reducing Valve Set Contents] ① Pressure reducing valve (with stay, no mounting screws) Supports up to 15kg ② SUS304 stainless steel elbow (high pressure, supports 300kg or more) ③ One-touch coupler (made in Japan) ④ Special size bushing (with 2 types) (Supports two types of threads on the front and back of the tank) ⑤ Seal tape ⑥ Installation manual with color photos will be enclosed [After-sales follow-up is also possible] The bushing screws can be used for both blind plugs and test nipples. It is possible to take out from 3 locations: elbow direct → hexagonal taper screw. The pressure reducing valve is certified by the international standard ISO9001・2015 (quality) and supports up to 15Kgf/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 set to approximately 8kg to 8.5Kgf/cm2 before shipping. Elbow maximum working pressure 320Kgf/cm2 Air coupler 15Kgf/cm2 has been cleared. In addition, we are not responsible for any accidents, injuries, damage, or any other cases that may occur during installation. [Notes] Regarding receipts, we do not issue them 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 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 is possible on weekdays, Sundays, and holidays. We will send it by Takkyubin Compact.