large threaded nut as in fig 3 indicates it is 32mm. Unfortunately it isn't. actual size 23mm (thread) and nut 22mm. I have an unknown metric thread type. The second issue, the product description, lists the air fitting thread type as 1/4. and supplied with fittings. (Luckily they gave them a slightly higher rating). as it is not said which thread. therefore the standard pipe thread is assumed. discovers that it is a G thread, not a PT thread.
Joywayus 5/8" ID Hose Barb Hex Union Brass Fitting Water/Fuel/Air With 10 Stainless Steel Clamps (Pack Of 5)
13 Review
High-Quality QiiMii Stainless Steel Sanitary Clamp With Silicone Gasket - 2 Inch, Single Pin Tri Clover Design
16 Review
Vacuum cleaner Dreame V9 Global, white
145 Review
1 Inch Beduan Brass Electric Solenoid Valve, 12V Normally Closed Air Valve For Water, Gas, Fuel, And Oil
10 Review