Movable Wall ,Movable Partition Wall,Moveable Partition Wall Guangzhou MQ Acoustic Materials Co., Ltd , https://www.movablepartitionwall.com
Oxygen globe valve features and advantages and disadvantages
Oxygen stop valve is a forced-sealed valve, so the valve is closed, you must apply pressure to the valve to force the sealing surface does not leak. When the medium from the oxygen valve into the valve below the valve six, the operating force needed to overcome the resistance is the stem and packing friction and the pressure generated by the media thrust, off the valve force than the valve opening force , So the diameter of the stem to be large, otherwise it will happen stem the fault of the top bend. Oxygen globe valve features are as follows: (1) the structure is simpler than the gate valve, manufacturing and maintenance are more convenient; (2) the sealing surface is not easy to wear and abrasion, good sealing, opening and closing valve and valve sealing surface between (3) When opening and closing, the valve stroke is small, so the cut-off valve height is smaller than the gate valve, but the structure length is longer than the gate valve; (4) Opening and closing more effort, opening and closing time principals; (5) large fluid resistance, due to the valve medium more tortuous passage, fluid resistance, power consumption; (6) the nominal flow direction of the medium PN ≤ 16MPa , The general use of downstream, the media flow from the valve under the flow; nominal pressure PN ≥ 20MPa, the general use of counter-current, the media flow down from the valve above. To increase the seal can. When used, the globe valve medium can only flow in one direction, can not change the flow direction; (7) when the valve is fully open erosion. Oxygen shut-off valve has the following advantages: 1, simple structure, manufacturing and maintenance more convenient; 2, the working stroke is small, opening and closing time is short; 3, good sealing, sealing surface friction, longer life expectancy. The shortcomings of the oxygen shut-off valve are as follows: 1, the fluid resistance, the larger the force required to open and close; 2, not suitable for particles with a larger viscosity, easy to coking medium;