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If you bid is ok for both parties. We could accept any quantity, of course, we like the big quantity, as the larger quantity, the lower price and we have the ability for big order.
Repeat again: We could offer different material (paper, PVC PET and so on) or instruction (simple or complex) of packaging which with printing (or logos) on it, we welcome client to offer their design drawing to us and discuss with us.We make many high-quality paper products as well, such as: kraft paper bags,art paper bags,Kraft Paper Bag with window, Paper food box and so on, I hope you will enjoy it.And we offered lots of packing idea to them, so that our client could get the best packing instruction.
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Steam valve working principle and installation methods
Steam valve works and how to install the use of what? The working principle of the steam pressure reducing valve is as follows: The working principle of the pressure reducing valve is that the steam pressure reducing valve reduces the inlet pressure to a certain required outlet pressure through opening and closing parts, and keeps the outlet pressure stable. Steam valve factory, the adjustment of the spring is not compressed state, then the main valve flap and pay the valve is closed, use the clockwise rotation of the adjustment screw, compression adjustment spring, the valve flap to the top to pay the valve flap, Medium by a hole through the valve seat to b hole into the piston above the piston in the medium pressure, move down to promote the main valve flap away from the main valve seat, the media flow to the valve. At the same time by the c hole into the diaphragm below the valve when the pressure exceeds the set pressure, the diaphragm to promote the compression adjustment spring, pay the valve followed by the closure of the move, so that the flow into the piston above the media to reduce the pressure with Of the main valve flap at this time in the main valve spring force to promote the move down, so that the main valve flap and the main valve seat to reduce the gap, the media flow also will be reduced, so that the valve pressure will drop to The new balance, on the contrary when the valve pressure is lower than the set pressure, the main valve flap and the main seat of the gap increases, the media flow also increases, the valve pressure will also increase to reach a new balance. Steam valve in the pipeline should be generally horizontal installation. Steam pressure reducing valve is an essential part of the pneumatic control valve, the main role is to depressurize the pressure of the gas source and stabilized to a fixed value, so that the control valve can obtain a stable air source power for regulation and control. The work of the steam valve is controlled by the pressure after the valve. When the pressure sensor detects the valve pressure indication increases, the valve opening of the pressure reducing valve decreases; when the pressure reducing valve is detected to reduce the pressure reducing valve valve opening increases to meet the control requirements. Steam Pressure Reducing Valve - The pressure reducing ratio of this valve must be somewhat above the system value; it should be able to respond to positive or reactive control signals even at maximum or minimum flow. These valves should be selected for a useful control range, ie 20% to 80% of the maximum flow rate. Normal for the same type or has the same ratio. These types of valves have their own optimal flow characteristics and flow rates required for proportional control. Steam pressure reducing valve is suitable for water, steam, air medium pipeline, through the regulation to reduce the inlet pressure to a desired outlet pressure, when the inlet pressure and flow changes, by the media itself automatically maintain the outlet pressure in a certain range But the difference between inlet pressure and outlet pressure must be ≥0.2MPA / CM Knowing how the steam pressure reducing valve works, it is easier to understand the precautions when installing and using: Pressure reducing valve Y43H-16 with 0.05 ~ 0.4MPa , Y43H-25, with 1 ~ 1.6MPa, Y43H-40, with 1 ~ 1.6MPa, 1.6 ~ 2.5MPa regulating spring, Y43H-64, with 1 ~ 3MPa regulating spring, the valve is equipped with 0.1 ~ 1MPa , Spring, the rest with the valve attached, the user can choose according to the amount of outlet pressure value. Before installing the steam pressure reducing valve, the piping system must be washed and cleaned. To prevent welding slag, scale and other stolen goods flow into the valve, affecting the normal work of the valve. Steam valve should be installed in easy to operate and maintain the place, and must be installed upright on the horizontal pipe, should pay attention to the pipeline medium flow direction and the arrow on the body shown in the same direction, not reverse. When the valve is installed and used, the cut-off valve of the bypass pipe should be opened to eliminate the mixture of condensed water and soft water in the pipe, so as to prevent the phenomenon of water and waste from opening when the valve is opened, and to damage the valve, when there is no abnormal phenomenon After that, slowly turn the adjusting screw clockwise to adjust the outlet pressure to the required pressure (based on the gauge after the valve). After adjustment, tighten the lock nut tightly and screw it on the protective cover. Pressure reducing valve should be installed before the filter to prevent media debris into the valve, affecting its performance. Before and after the installation of the valve should be a straight tube, the straight tube before the valve is about 600 mm in length, straight tube after the valve is about 1000 mm. General pressure relief valves are required import and export pressure must ≥0.2Mpa. Pressure reducing valves usually have DN50 ~ DN100 and other specifications, the working pressure before and after the valve are <1MPa and 0.1 ~ 0.5MPa respectively, the error range of pressure regulating is ± 5% ~ 10%.