Product overview of Z641H pneumatic flange gate valve
Z641H pneumatic flange gate valve has the characteristics of reliable performance, convenient operation switching and maintenance. Has been widely used by petroleum, chemical, shipping and other departments to control various media. Z641H pneumatic flange gate valve is equipped with pneumatic actuator and manual mechanism. The gate valve actuator adopts a double-cylinder structure. Compared with the single-cylinder type Z641H pneumatic flange gate valve, the lifting force doubles, which solves the single-cylinder pneumatic Some valve plates of the gate valve are wedged in the valve body and cannot be opened. The buffer mechanism can effectively reduce the wear of the valve plate sealing surface and the valve body sealing surface due to the downward impact of the piston when the valve is closed. Can avoid the phenomenon of jamming the brake. Z641H pneumatic flange gate valve can be equipped with electric or pneumatic feedback device to send valve opening and closing information. Can achieve long-distance control, centralized control and automatic control.
Product features of Z641H pneumatic flange gate valve
(1) Exquisite selection of materials, conforming to relevant domestic and foreign standards, and high overall quality of materials.
(2) Meet the requirements of domestic and foreign advanced standards, reliable sealing, excellent performance and beautiful appearance.
(3) The sealing pairing is advanced and reasonable. The sealing surfaces of the gate and valve seat are made of Stellite cobalt-based hard alloy with different hardness. The sealing is reliable, high hardness, wear-resistant, high temperature resistance, and resistance. Corrosion, abrasion resistance and long life.
(4) The valve stem undergoes quenching and tempering and surface nitriding treatment, and has good corrosion resistance, abrasion resistance and wear resistance.
(5) Adopting wedge-type elastic shutter structure, thrust bearings are set in medium and large caliber, with small friction force, and equipped with impact manual, easy to open and close easily.
(6) Various piping flange standards and flange sealing surfaces can be used to meet various engineering needs and user requirements.
Main technical parameters of Z641H pneumatic flange gate valve
Technical parameters of Z641H pneumatic flange gate valve actuator
1. Power supply: The motor is three-phase AC, 380V (special order 660V, 440V or 220V), 50Hz (special order 60Hz); control line voltage 220V / 50Hz (special order 60Hz); remote control voltage 24VDC.
2. Ambient temperature: -20— + 60 ℃ (special order -60— + 80 ℃)
3. Relative temperature: ≤90% (at 25 ℃)
4. Ordinary and outdoor types are used in places without flammable / explosive and non-corrosive media; explosion-proof products are dⅠ and dⅡBT4, dⅠ is suitable for non-mining working faces in coal mines; dⅡBT4 is used in factories and is suitable for the environment It is an explosive gas mixture of Group ⅡA and ⅡB T1-T4. (See GB3836.1 for details)
5, protection level: outdoor and explosion-proof type is IP55 (IP67 can be customized).
6. Working time: 10 minutes (30 minutes can be customized).
Five, Z641H pneumatic flange gate valve main parts material
Product selection of Z641H pneumatic flange gate valve
(1) Valve body parameters: Nominal diameter, working pressure, process medium, use occasion, valve body material and other parameters.
(2) Actuator parameters: actuator form, control mode, control signal (4-20mA, 1-5V), mode of action (gas-open, gas-closed)