首页>
外国专利>
New device of the guiding of the central rod of the regulator to a metal bellows compressible patented under the no. 405.158 and application to the pressure reducing valve of a completely controlled valve
New device of the guiding of the central rod of the regulator to a metal bellows compressible patented under the no. 405.158 and application to the pressure reducing valve of a completely controlled valve