What is the pressure rating of the ball valve with model number Q41F-20(K)DN80?
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Our factory is carrying out a small technical renovation, and one of the ball valves used is of the model Q41F-20(K)DN80. 20 (K) is a pressure rating in pounds. But I don’t know what the pressure rating is for the domestic flange that pairs with it? Is it 1.6MPa or 2.5MPa? Because the other fittings (including pipelines) are all in metric sizes. Could someone tell me, thank you.
Thank you to the person above. What I want to ask is: can I use a PN1.6 DN80 flange to be paired and installed with a ball valve flange? This is the main one.
According to the JIS B2212-2214 standards, it should be 20 kgf/cm2
It can be used; the diameter of the bolt’s center circle is 160. According to Japanese standards, it is an M20x8 bolt, while according to Chinese standards it is an M16x8 bolt – using M16 will suffice
It should be equivalent to a PN5.0MPa flange.