In all reality - probably will suffice...
Most of the Chinese knockoffs are exact copies of a name brand brush, in terms of their dimensions and designs. What you end up loosing out though are on the long term durability issues as well as some fit and finish related issues.
The Chinese brush may use a weaker spring, or a spring that isn't even made from spring steel so it might need replacing in a year (cheap enough to replace a spring). The chrome plating which provides a smooth surface for even flow, mixture and clean up might wear out faster because they only do one coat of chrome as opposed to 3 or more on a name brand. The needle might not seat as tightly when closed (which can cause a bit of a hiss or dribble depending on how bad it is). You may have a shift on the die when the body is being cast that results in an obstruction that causes an irregular spray pattern...
Then again, you might get a brush that is as solid and reliable as a $200 brush from another company - unfortunately, there is a greater percentage of the above problems in the knock-offs than in the name brand brushes and if you do have one of those problems...it is quite often on you to fix it (or buy another knock off and cross your fingers). If you have a problem with a name brand brush - you call up their Customer Service and they take care of it for you.
Without having my manuals in front of me though, that part number sounds familiar and I think I have refurbished one or two of them (different brand name...same part number, very common for the Chinese knock-offs to sell the same brush under a dozen or so different brand names as well as various store brands and discount stores like Harbor Freight). IIRC, one of them was a slipped casting that I needed to retap the threads on the nozzle and hone the body on and the other one was a spring that had lost its springiness. One involved about an hours work to fix, while the other one required a trip to the hardware store for a 50 cent spring that fixed the problem.
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