D341H Manual of elastic hard sealing butterfly hard seal butterfly valve called a brief flap valve is a valve simple structure, but also can be used for low pressure pipeline medium switch control. Hard sealing butterfly valve in the pipeline mainly from the cut and throttling. Elastic hard sealing butterfly valve D341H manual details Product name: Elastic-like sealing butterfly valve DN :200-2000 Nominal pressure: 2.5-25MPa Temperature: ≤ 350 ℃ Suitable medium; gas, air, water, oil, steam, acids, alkali, salt and other drive mode: Turbo transmission (manual), electric, pneumatic seal butterfly called flap valve is a valve simple structure, but also can be used for low pressure pipeline medium switch control. Hard sealing butterfly valve in the pipeline mainly from the cut and throttling. Valve opening and closing member is a disc-shaped disc, the valve body rotating around its own axis, so as to achieve the purpose of opening and closing, or adjusting. . Hard seal butterfly valve suitable furnace, gas, steam, natural gas, city gas, hot and cold air, chemical metallurgical engineering and power generation environmental systems transport all kinds of corrosive, non-corrosive pipe fluid medium, the medium used to adjust and truncation flow. Hard sealing butterfly valve can be divided into manual hard seal butterfly valve, pneumatic seal butterfly valve, electric hard seal butterfly valve. Hard drive in the form of eccentric metal seal butterfly valve seal structure, sealing in the form of metal to metal seal, can be swapped metal-to-metal seal ring, stainless steel and graphite composite panels to metal seal ring. Seal butterfly valve in addition to electric there : manual, worm gear lever, pneumatic, etc. This type valve in the pipe should generally be installed horizontally. Hard seal butterfly valve plate mounted on the pipe diameter direction. Cylindrical channel in the valve body, disc-shaped disc around the axis of rotation, rotation angle between 0 ° ~ 90 °, rotation to 90 °, the valve is fully open state was. Simple hard seal butterfly valve structure, small size, light weight, only a few parts. And just rotate 90 ° to quickly open and close, easy to operate, while the electric fluid control valve has a good feature. Butterfly valve in the fully open position, the disc thickness is only when the medium flows through the body resistance, generated by the valve pressure drop is small, it has a better flow control characteristics. Butterfly shells sealed and two metal seal type. Resilient seal valves, seals can be mounted on the body or attached to the disc perimeter. If the request to use as a flow control valve, the main choice is the right size and type of valve. Structural principle seal butterfly valve is particularly suitable for the production of large diameter valves. Hard sealing butterfly valve is widely used not only in the oil, gas, chemical, water treatment and other general industries, but also used in thermal power plant cooling water system.