Quality is everything! US Walker (WORK) import lined globe valve is mandatory sealed valve, so when the valve is closed, the pressure must be applied to the valve to force the sealing surface does not leak. When the medium consists of the bottom valve into the valve, the operating force required to overcome the resistance, the friction force and the thrust stem and packing by the pressure generated by the medium, close the valve opening force larger than the force of the valve, so that the stem The diameter should be large, otherwise the stem top corner of the fault will occur. When lined off valve is open, the valve opening height for nominal 25% to 30% of the diameter, the flow has reached the maximum, indicating that the valve has reached the fully open position. So closing the valve fully open position, the valve stroke should be determined. The basic structure of a plastic-lined straight-type, type straight slip type, type angle type valve, with a compact, hoist flexible, corrosion resistance strong, short stroke (usually Nominal by 1/4) and so on. Is widely used in petroleum, chemical and other piping systems do cut off media, but the plastic lining of non-used cut-off valve flow regulator, in order to avoid high-speed media orifice flow generated at the sealing surface erosion damage. 2, the valve stem is designed with an integrated structure to prevent the possibility of the line pressure fluctuations due to trim out valve, compact, safe to use. Key Features: Operating temperature: -30 ℃ ~ + 150 ℃; Body Material: Carbon Steel Medium: Corrosion Product Name: lined globe valve working medium: air, water, oil; performance parameters: Nominal Diameter: DN15 ~ 350mm Nominal Pressure: PN1.0 ~ 2.5Mpa Connection: Flanged drive: manual, worm gear, electric, pneumatic Applicable medium: acid, hydrofluoric acid, phosphoric acid, alkali, water and other media to any strong corrosive. When ordering, please provide the following information:? A nominal diameter (mm), PN (MPa), and the operating temperature range of two straight before the pressure regulating valve, the valve pressure three media name and status at 4 single seat??? valve supply voltage (220V or 380V, the default 220V) 5 Input signal:??? 4-20mA, or 1-5V (default 4-20mA) 6 single-seat control valve body, the trim material requirements of seven other special requirements (such as corrosion resistance requirements, proof grade requirements, leakage class limits, etc.) United States Walker (WORK) Valve Chinese agents welcome you to inquire and order!