Electric gate valve MKZ941H-40 DN200 product catalog and manual

Electric gate valve MKZ941H-40 DN200 product catalog and manual. The MA mark valve for coal mine electric regulating gate valve has a protection level of IP68, and has mining coal safety certificate and explosion-proof certificate. It is suitable for flammable and explosive occasions, with high safety factor, strong operating function, and stable performance. There are two types of explosion-proof products, dI and dIIBT4. dI is suitable for non mining working faces in coal mines; DIIBT4 is used in factories and is suitable for explosive gas mixtures in IIA and IIB level T1 to T4 environments. The performance of explosion-proof electric gate valves meets the requirements of JB/T8528-1997<Technical Conditions for Electric Devices of Ordinary Valves>. The performance of the explosion-proof type meets the requirements of GB3836.1-2000<General Requirements for Explosion proof Electrical Equipment for Explosive Environments>and JB/T8529-1997<Technical Conditions for Explosion proof Valve Electric Devices>. And it has been verified by the National Explosion proof Electrical Product Testing Center and obtained an explosion-proof certificate. The electric regulating gate valve MA marking valve for coal mines is derived from the ordinary type, with the addition of many electrical and electronic components. The overall ordinary electrical part mainly consists of the multifunctional module MK1, remote control module MK2, button box indicator light, opening meter, contactor, etc. The multifunctional module MK1 is composed of three parts: phase recognizer XS, contactor interlock protector HB, and DC power supply DC. The remote module MK2 consists of four solid-state relays and three dip switches. The overall regulating electrical part consists of regulating modules TMK, contactors, etc. The control line is 220V, 50Hz (special order 60Hz); Remote control is 24VDC. Valve features: ① The valve adopts pressure self tightening sealing or valve body and valve cover gasket sealing structure, which is reliable! Safe and reliable use. ② The valve disc adopts a double gate plate with a universal top structure in the middle, which can automatically adjust the degree of fit between the valve disc and the sealing surface of the valve seat to ensure the sealing of the valve. At the same time, this structure is easy to maintain, saves costs, and has good interchangeability of valve discs. ③ The sealing surface of the valve disc and seat is made of cobalt chromium tungsten hard alloy by plasma spray welding. The sealing surface has high hardness, wear resistance, abrasion resistance, and long service life. ④ The valve stem is made of nitriding steel, with surface nitriding treatment, high hardness, scratch resistance, corrosion resistance, and long service life. ⑤ The electric device is equipped with a torque control mechanism, on-site operating mechanism, and manual/electric switching mechanism. In addition to on-site operation, remote operation, PLC control, and intelligent control of 4-20mA current input and output can also be performed. ⑥ Manual valves are opened by a manual mechanism or a handwheel upon impact. Reduce valve operating force. ⑦ Valves can be installed at any position in the pipeline, and carbon steel or alloy steel valves can be selected based on the medium and its temperature. ⑧ When installing and debugging for the first time, the valve must be manually opened to about half of the position to avoid damage to the valve or electrical components caused by reverse motor phase sequence connection.