Why don't cock valve with handle

One customer in our consulting found two-way carbon steel cock valve without a handle, why? X43W - 1. 0 c two-way cast steel plug valve is used with the hole of the cock as open-close part, by the gyration cock closed valve door, has good sealing performance, long service life, possesses the advantages of in and out of the side seal at the same time. Design specification: follow GB/T12240 API599, API6D standard, including X43W, X43T, X43F PN1. 0 mpa cock valve is without the handle. Valve door is standard data book without handle design, so the production cock valve manufacturer to manufacture the following types: X43W, X43T, X43F is without handle, directly to the valve body to sell to the user. Others ask why not take the handle? Because the manufacturer is made according to the relevant national standard, no standard book design, with the handle factory production is also without the handle. Some people ask the user how to do? The answer is yes, the user can use, of course, is not often open/close the valve, cock valve when users want to open with adjustable wrench rotation can be used.