Briggs & Stratton 698183 Fuel Shut-Off Valve For Quantum and Selected Models, In-Line Valve,Black

This is a comparison of three small (3/16″ or 1/4″ ID) inline fuel valves I purchased from Amazon. The 3 valves are:1 – Motion Pro 08-0038 Inline Fuel Valve (“MP” valve), http://www.amazon.com/gp/product/B009D2R5YU2 – INLINE FUEL VALVE PETCOCK for Chinese made ATV GO-KART DIRT BIKE (“ATV” valve),www.amazon.com/gp/product/B007NL2Y3K3 – Briggs & Stratton 698183 In-Line Fuel Shut-Off Valve (“B&S” valve), http://www.amazon.com/gp/product/B0038U3JKMI needed to install an in-line fuel shut-off valve on a small dirt bike that had a failed fuel valve. I ordered these three due to their relatively low cost, coupled with the fact that it is not possible to get a good idea of their relative sizes by looking at pictures. There was also no way to see how easily each of them worked just by looking.IMHO, it is particularly import for an in-line fuel vale to work easily with the fingers, since one is turning the valve against the bending resistance of the fuel lines themselves. The harder a valve is to turn on and off, the more the fuel lines will be flexing over time. I wanted to minimize fuel line flexing to avoid leakage and perhaps eventual breaking of the fuel lines near the valve.All the valves, as delivered, flowed fuel when turned on and shut off the flow when turned to off.The slimmest was the MP valve. It appeared to have the highest quality materials (brass). It has intuitive lever positions – “on” has the lever in-line with the fuel lines, “off” has the lever cross-wise to the fuel lines. It has a good sized lever. Very nice. However, it is very hard to turn the lever; it is very stiff.The ATV valve (in all fairness) was intended to be fastened to something – you can see the small mounting hole in the body casting in the Amazon picture. For my use, there was no way to make use of the hole. The material seems adequate, appearing to be some kind of pot metal or other alloy. The on/off locations of the shutoff valve lever is something one would get used to with use, but is not automatically intuitive. The lever is smallish and fiddly. The body is larger than the MP valve, as expected. This valve’s lever required about the same large amount of force as the MP lever, without the advantage of the MP valve lever’s longer size.The B&S valve has a larger body than the other two (some additional girth and height), so there may be some applications were a slimmer valve is needed. The valve lever is relatively small, but is much less fiddly than the ATV valve lever. It also has intuitive lever positions – “on” has the lever in-line with the fuel lines, “off” has the lever cross-wise to the fuel lines. Importantly, the valve lever is very easy and smooth to work. The effort needed to open or shut the valve is significantly less than either the MP valve or the ATV valve. The ease of working the valve lever on the B&S valve is enough less than the other two that it was the deciding factor for installation on the dirt bike; its size compared to the MP valve was not a problem for my installation. This valve is plastic; I do not know how long it might last compared to the brass MP valve. However, I intend to use another of these B&S valve when the time comes due to its need for less lever pressure in use. My B&S valve came with the two hose clamps, which I used.I feel obligated to say that my comparison above is my opinion of these three valves based on a single sample of each valve and without taking any of them apart. Other buyers may have other needs/considerations, and, there are other fuel valves sold on Amazon I didn’t buy that may be better or worse than these three, of course.