2017年6月12日星期一
For customers to correctly select the high temperature submersible pump model
There is a customer in Guangdong, two months ago inquiry high temperature submersible pump, but the model has been repeatedly uncertain. Before the beginning of high temperature submersible pump selection is 65WQR20-25-4. According to the customer high temperature submersible pump selection, and asked the number, it directly reported the price. Later, the customer asked 80WQR30-30-5.5 the price of this model, the number is so much, I really reported. But this is the question has been asked me, ask the price, and gradually began to doubt that the customer is to set the price. I will directly ask the customer: I come to help you choose it, the vertical distance of the water supply how much it, an hour need to drain much. Customer answer: This I am not very clear, will choose the type of trouble, but the site of the high temperature submersible pump selection requirements, you can send me a look, or direct selection, the above data should be accurate, A detailed offer directly to the mailbox. Read the customer sent over the working conditions, and finally high temperature submersible pump selection for the 100WQ80-15-7.5, the customer is written above the unit is L / min, conversion over the required flow is relatively large, small head, in order not to let Customers worry that I did not arbitrarily to his high temperature submersible pump selection, how I choose the process is also written on the quotation. Because the amount is also a lot, the customer is also worried about the problem, only to ask this model, ask that model, but also did not ask the focus. Now the customer to get back to say that you can develop a contract, and hope that the price can be a little for him, he is also running the site, the quality of clearance, and he continued to sell the high temperature submersible pump. Often because of high temperature submersible pump selection problems, customers will be tangled for a long time, as long as we say that the next case, Zhengzhou Dragon Pump Co., Ltd. can at any time for your selection, high temperature sewage pump, hot water submersible pump, Multi-resistant high temperature sewage pump prices, you can always call us
As long as the sewage pump is of good quality, it can lead to a large list.
Last year, a customer in Taizhou City, told me to buy two wastewater treatment pumps. I know he is not engaged in the wholesale and retail pump, but do other products, it is estimated that his relationship households to the sewage pump, so he found me on the Internet. But I still send messages every weekend greetings, after all, is a cooperation. In March of this year, he called to consult a sewage pump, said to be equipped with stainless steel impeller or the overall stainless steel sewage pump, I was reported the price, and asked his customers over there the actual situation, so that he can choose the right The Contacted a few times, but has not been ordered. At the beginning of this month, he called again to ask the pump, but still not under the single. Oh, it is estimated that his customers do not hurry it Last week, he finally ordered, let me do it, I said good, but this is custom, not a conventional pump, let him call the money in advance, just that day is Saturday, he said can not do public Public payment, then I said next Monday it Wait until this Monday, he did not play money, although I was a little anxious heart, but did not call him. The day before yesterday, I worry about is not to buy elsewhere, and call him. He said sewage pump to ask me if the price is not real price? Do not go to the wholesale market to buy cheaper sewage submersible pumps than my Oh Oh, I said can not be compared, each product positioning is different, our family only good quality, the bearing is imported from Japan NSK, impeller is 304 casting, absolutely not iron pressure, the motor is the old Y standard copper Line of. Customers smiled and said, and asked me tomorrow morning before 9 o'clock can not do a good job, we pass this bus, to him to go. I say it! (In fact, too late, when I let the driver sent in the past, also more than an hour's drive) he said now people outside, go back after the arrangements for the purchase price. But yesterday did not play money to me. But the sewage pump has been done, and I think about it, to a thorough put. Yesterday morning I called him, said the afternoon the driver to the way to your side of the delivery, sewage pump to the words I let him take the past. Customers even said that the best, I immediately arranged the purchase price. Half an hour later, I received the boss phone, said there is a payment to the company account. I'm done, I let the workshop arrangements, the afternoon delivery to the customer that. The original customer is because the transport is not convenient and dragged, Oh, the right medicine immediately resolved. At the same time I also understand the old customers regardless of the size of the list can not be lost, keep in touch, maybe someday give you a big list.
Methods for detecting leaks in self - piping pump pipelines
Self-suction pump pipe leakage will lead to suction is not on the water (self-absorption height of less than), and even lead to pump flow is not enough and the head is not enough. In short a sentence: If the self-suction pump pipe leakage will lead to changes in the parameters of the pump, then the detection of self-suction pump pipe leak is the most important thing when we install the pump, the following we usually check the method Give you some of the list, I hope to help customers.
(1) duck hair method: with a duck down, in the pump running close to the suspected air intake, observe the duck fluttering situation. Similarly, the use of lit cigarettes can be operated by this method. Through the ducks and flue gas fluttering direction to help find.
(2) oil method: the difficult to identify the intake point, can be determined in the intake part of the air coated with a little oil, oil was quickly sucked away that is the air intake.
2, to prevent self-priming centrifugal pump intake measures
(1) Self-priming pump should be installed as close as possible to the surface, to ensure that the water level is not absorbed into the air.
(2) When installing the suction pipe, the inlet horizontal pipe should be tilted down or horizontally in the direction of the water, and the inlet pipe should not be higher than the pump inlet at any point, otherwise the air in the pipe will be excluded.
(3) to prevent packing gas leakage. Packing hopper should be appropriate, if too loose, should be tightened packing gland; packing damage, failure, should be replaced; packing cover water pipe plug and heat, will cause packing cover leakage, should clean water seal The
(4) with the flange connected to the water pipe installed before the two flanges to contact the plane clean and clean, the middle plus a 3 ~ 5mm thick pad, to be symmetrical, several times to gradually bolts tighten The
(5) self-suction pump bottom valve to have enough submerged depth, from the valve plane flood depth should be equal to the bottom valve diameter of 1.5 to 2 times, at least not less than 0.5m. If submerged too shallow, easy to form a vortex, which sucked into the air, resulting in cavitation and damage to the impeller and pump shell. If you find the pump running into the water level down quickly, you can put a few pieces of wood on the surface to reduce the vortex, to prevent air into the pump shell.check out best submersible Water pumps
(6) self-priming pump body with a gas plug, in order to facilitate the gas, the same thread can be used in place of the same type of faucet plug, bleed open the faucet can be.
(7) suction pump suction port at the degree of vacuum is limited, the vacuum is too large, easy to pump water vaporization, self-absorption pump work disadvantage. Therefore, the respective suction pump has its maximum allowable suction, generally between 3 ~ 8.5m, the installation should be controlled in this range.
(8) pay attention to exhaust. Before starting the self-priming pump should be enough water to exclude the air from the suction pump; usually should be regularly open the pump cover on the air plug, remove the accumulation of air inside
(1) duck hair method: with a duck down, in the pump running close to the suspected air intake, observe the duck fluttering situation. Similarly, the use of lit cigarettes can be operated by this method. Through the ducks and flue gas fluttering direction to help find.
(2) oil method: the difficult to identify the intake point, can be determined in the intake part of the air coated with a little oil, oil was quickly sucked away that is the air intake.
2, to prevent self-priming centrifugal pump intake measures
(1) Self-priming pump should be installed as close as possible to the surface, to ensure that the water level is not absorbed into the air.
(2) When installing the suction pipe, the inlet horizontal pipe should be tilted down or horizontally in the direction of the water, and the inlet pipe should not be higher than the pump inlet at any point, otherwise the air in the pipe will be excluded.
(3) to prevent packing gas leakage. Packing hopper should be appropriate, if too loose, should be tightened packing gland; packing damage, failure, should be replaced; packing cover water pipe plug and heat, will cause packing cover leakage, should clean water seal The
(4) with the flange connected to the water pipe installed before the two flanges to contact the plane clean and clean, the middle plus a 3 ~ 5mm thick pad, to be symmetrical, several times to gradually bolts tighten The
(5) self-suction pump bottom valve to have enough submerged depth, from the valve plane flood depth should be equal to the bottom valve diameter of 1.5 to 2 times, at least not less than 0.5m. If submerged too shallow, easy to form a vortex, which sucked into the air, resulting in cavitation and damage to the impeller and pump shell. If you find the pump running into the water level down quickly, you can put a few pieces of wood on the surface to reduce the vortex, to prevent air into the pump shell.check out best submersible Water pumps
(6) self-priming pump body with a gas plug, in order to facilitate the gas, the same thread can be used in place of the same type of faucet plug, bleed open the faucet can be.
(7) suction pump suction port at the degree of vacuum is limited, the vacuum is too large, easy to pump water vaporization, self-absorption pump work disadvantage. Therefore, the respective suction pump has its maximum allowable suction, generally between 3 ~ 8.5m, the installation should be controlled in this range.
(8) pay attention to exhaust. Before starting the self-priming pump should be enough water to exclude the air from the suction pump; usually should be regularly open the pump cover on the air plug, remove the accumulation of air inside
2017年6月7日星期三
Maintenance of DG - type boiler feed water pump
Boiler Feed Pump Overview:
Boiler feed pump suitable for conveying temperature below 110 ° C of water or physical and chemical properties similar to the water non-corrosive to other liquids, widely used in industrial and mining enterprises and institutions of the boiler water supply and urban life water supply. DG series pumps are particularly suitable for boiler feed water.
Boiler feed pump maintenance reasons:
Vibration value is too large, more than 0.2mm;
Boiler feed pump repair content:
1) to find the coupling, adjust the axial clearance of the coupling;
2) check, repair in the operation of the various defects, adjust the bearing gap, tighten the various parts of the bolt;
3) check and clean the cooling water system;
4) disintegration, check the parts of the wear and tear, corrosion and erosion degree, be overhauled or replaced;
5) check the shaft wear, corrosion and not straight, to repair or replace;
6) correction shaft, impeller dynamic balance;
Boiler Feedwater Pump Structure Description:
Boiler feed pump for horizontal multi-stage pump, both ends of the support. The housing part is the segment type, the pump transmission way is through the elastic diaphragm coupling and the electric machinery connection. The direction of rotation of the pump from the drive side to see the pump, clockwise rotation.
1, the stator part:
Mainly in the suction section, the middle, spit out the section, guide vane, and so on, respectively, with tightening bolts into one, spit mouth and suction port for the vertical direction.
2, the rotor part:
Mainly shaft, impeller, balance plate and sleeve components and other components.
3, the pump seal:
Single-ended mechanical seal
A, the suction section, the middle section, between the discharge section of the static joint with a rubber seal sealed.
B, the use of retaining retaining water, to prevent water into the bearing.
4, the bearing part:
The entire rotor is supported by a sliding bearing at both ends of the shaft. The bearings are automatically lubricated with petrol stations.
Boiler feed pump maintenance procedures
1, the demolition of the boiler feed pump
1) split the coupling cover, coupling bolts, demolition of cooling water pipes, pump air valve;
2) Remove the pump cover bolts, packing gland bolts, remove the packing gland, smooth lift the pump cover on the designated location;
3) Remove both sides of the bearing cap bolts and non-drive side end caps, remove the bearing cover, hang the rotor;
2, boiler feed pump rotor disassembly
1) Remove the coupling with a special tool;
2) Remove the rolling bearing and the bearing with copper rods gently knocked out;
3) Loosen the sleeve and cap on both sides, remove the sleeve and remove the components such as the flange and the packing seat seal ring. Such as impeller corrosion or serious ring wear, the use of heating methods, with a special tool to remove the impeller;
3, boiler feed pump inspection and repair
1) Turn the pump cover to clean up the check surface without blown, burr;
2) Clean the pump shaft and place the axis on the dedicated "V" type iron upper school bend;
3) check the impeller cavitation and repair, clean up the impeller runner, remove the rust;
4) clean check the sleeve;
5) clean check seal ring;
6) check clean bearing whether the wear and tear, rotation is flexible, with or without noise;
7) bearing room with kerosene clean, oil cup clearly visible oil level;
8) Put the impeller, the sleeve into the shaft, and then tighten the ends and cap on the special "V" iron or on the bearing school Colonel;
9) clean check the coupling, wheel bolts and elastic ring without damage;
10) clean check the pump body, combined with the surface with a radiant cloth polished clean;check details of submersible tube well pumps
Boiler feed pump disassembly should pay attention to:
1) in the demolition of the pump shaft when the components such as hand hammering must use copper rods, can not hurt the pump shaft;
2) Remove the components must be placed in order in order, and do the number in order to buy back;
3) the input end fastening nut is anti-silk;
Boiler feed pump suitable for conveying temperature below 110 ° C of water or physical and chemical properties similar to the water non-corrosive to other liquids, widely used in industrial and mining enterprises and institutions of the boiler water supply and urban life water supply. DG series pumps are particularly suitable for boiler feed water.
Boiler feed pump maintenance reasons:
Vibration value is too large, more than 0.2mm;
Boiler feed pump repair content:
1) to find the coupling, adjust the axial clearance of the coupling;
2) check, repair in the operation of the various defects, adjust the bearing gap, tighten the various parts of the bolt;
3) check and clean the cooling water system;
4) disintegration, check the parts of the wear and tear, corrosion and erosion degree, be overhauled or replaced;
5) check the shaft wear, corrosion and not straight, to repair or replace;
6) correction shaft, impeller dynamic balance;
Boiler Feedwater Pump Structure Description:
Boiler feed pump for horizontal multi-stage pump, both ends of the support. The housing part is the segment type, the pump transmission way is through the elastic diaphragm coupling and the electric machinery connection. The direction of rotation of the pump from the drive side to see the pump, clockwise rotation.
1, the stator part:
Mainly in the suction section, the middle, spit out the section, guide vane, and so on, respectively, with tightening bolts into one, spit mouth and suction port for the vertical direction.
2, the rotor part:
Mainly shaft, impeller, balance plate and sleeve components and other components.
3, the pump seal:
Single-ended mechanical seal
A, the suction section, the middle section, between the discharge section of the static joint with a rubber seal sealed.
B, the use of retaining retaining water, to prevent water into the bearing.
4, the bearing part:
The entire rotor is supported by a sliding bearing at both ends of the shaft. The bearings are automatically lubricated with petrol stations.
Boiler feed pump maintenance procedures
1, the demolition of the boiler feed pump
1) split the coupling cover, coupling bolts, demolition of cooling water pipes, pump air valve;
2) Remove the pump cover bolts, packing gland bolts, remove the packing gland, smooth lift the pump cover on the designated location;
3) Remove both sides of the bearing cap bolts and non-drive side end caps, remove the bearing cover, hang the rotor;
2, boiler feed pump rotor disassembly
1) Remove the coupling with a special tool;
2) Remove the rolling bearing and the bearing with copper rods gently knocked out;
3) Loosen the sleeve and cap on both sides, remove the sleeve and remove the components such as the flange and the packing seat seal ring. Such as impeller corrosion or serious ring wear, the use of heating methods, with a special tool to remove the impeller;
3, boiler feed pump inspection and repair
1) Turn the pump cover to clean up the check surface without blown, burr;
2) Clean the pump shaft and place the axis on the dedicated "V" type iron upper school bend;
3) check the impeller cavitation and repair, clean up the impeller runner, remove the rust;
4) clean check the sleeve;
5) clean check seal ring;
6) check clean bearing whether the wear and tear, rotation is flexible, with or without noise;
7) bearing room with kerosene clean, oil cup clearly visible oil level;
8) Put the impeller, the sleeve into the shaft, and then tighten the ends and cap on the special "V" iron or on the bearing school Colonel;
9) clean check the coupling, wheel bolts and elastic ring without damage;
10) clean check the pump body, combined with the surface with a radiant cloth polished clean;check details of submersible tube well pumps
Boiler feed pump disassembly should pay attention to:
1) in the demolition of the pump shaft when the components such as hand hammering must use copper rods, can not hurt the pump shaft;
2) Remove the components must be placed in order in order, and do the number in order to buy back;
3) the input end fastening nut is anti-silk;
Multi - stage boiler feed water pump without sealed water consequences and role
Boiler Feedwater Pump Seal Water is a chemical deaerated water and condensate water as a main water source, a spare! The two water sources are qualified water, and industrial water quality is not qualified!
1, the role of boiler water supply pump seal water is:
1) to the high-pressure water pump, although the seal but still have a certain pressure, in order to prevent the water pump through the shaft and seal the gap between the leakage, from the condensate pump outlet, or salt water jellyfish Pipe a water source as a sealed water!
2) The water in the feed pump is water with a certain high temperature, which is transferred to the bearing through the shaft or pump metal of the pump, so that the temperature of the bearing rises. In order to control this temperature, the sealing water also cools The role.
2, the boiler feed pump without sealed water Consequences:
1) When the seal water passes through the seal, the water forms a water film between the shaft and the seal as the shaft rotates at high speed, preventing the shaft from directly rubbing against the seal. When the loss of sealing water, so that the pump will be high-pressure water supply through the pump shaft and seal the gap between the leakage, resulting in a large number of refrigerant loss;
2) at the same time high temperature of the water supply through the pump shaft and pump metal temperature to the bearing, so that the bearing temperature increases, but also make the bearing burned;check out for farmland water pumps
3) high-speed rotation of the bearing and the gap between the seal is very small, when the loss of sealing water, where the water film will be destroyed, the shaft and the seal is likely to friction, so that the pump to increase the vibration Will cause equipment outage and damage.
So do not underestimate the situation without sealing water, if the pump seal water is just water back to the water is back to the condenser, I suggest you immediately cut the standby seal water, or a short time may also cause the vacuum and damage The risk of pump bearings, in fact, as the condensate pump outlet to adjust this way it is nothing is not desirable is only necessary to control the opening to prevent the whole after the logic of the jump pump that the pump back bad, it should be impossible, because each plant on the condensate Pump protection is due to the logic that is: when the exit of the electric door closed in place after the linkage jump pump.
1, the role of boiler water supply pump seal water is:
1) to the high-pressure water pump, although the seal but still have a certain pressure, in order to prevent the water pump through the shaft and seal the gap between the leakage, from the condensate pump outlet, or salt water jellyfish Pipe a water source as a sealed water!
2) The water in the feed pump is water with a certain high temperature, which is transferred to the bearing through the shaft or pump metal of the pump, so that the temperature of the bearing rises. In order to control this temperature, the sealing water also cools The role.
2, the boiler feed pump without sealed water Consequences:
1) When the seal water passes through the seal, the water forms a water film between the shaft and the seal as the shaft rotates at high speed, preventing the shaft from directly rubbing against the seal. When the loss of sealing water, so that the pump will be high-pressure water supply through the pump shaft and seal the gap between the leakage, resulting in a large number of refrigerant loss;
2) at the same time high temperature of the water supply through the pump shaft and pump metal temperature to the bearing, so that the bearing temperature increases, but also make the bearing burned;check out for farmland water pumps
3) high-speed rotation of the bearing and the gap between the seal is very small, when the loss of sealing water, where the water film will be destroyed, the shaft and the seal is likely to friction, so that the pump to increase the vibration Will cause equipment outage and damage.
So do not underestimate the situation without sealing water, if the pump seal water is just water back to the water is back to the condenser, I suggest you immediately cut the standby seal water, or a short time may also cause the vacuum and damage The risk of pump bearings, in fact, as the condensate pump outlet to adjust this way it is nothing is not desirable is only necessary to control the opening to prevent the whole after the logic of the jump pump that the pump back bad, it should be impossible, because each plant on the condensate Pump protection is due to the logic that is: when the exit of the electric door closed in place after the linkage jump pump.
What is the role of boiler feed pump front pump
Feed water front pump role: in order to improve the deaerator in the sliding operation of the economy, while ensuring the safe operation of the water pump, and the pump running in series.more about tube well water pumps
1, the first forward pump speed is low, reducing the NPSH (which is based on the steam pump similarity theorem: the same pump of the NPSH is proportional to the square of the speed!), While the front pump with double suction impeller As well as corrosion-resistant materials, so that the main steam pump to avoid cavitation;
2, due to the low speed of the front pump, the required pump inlet pouring height reduction, thus reducing the height of the deaerator installation, saving the construction costs of the plant.
Boiler feed pump front pump application:
1, commercial power generation on behalf of enterprises: Shanghai electric repair, submerged, Zhengzhou Electric Power, KSB, etc .;
2, enterprise-owned power station: Chongqing pump factory, dark blue, Garley, Cole, Sulzer and so on.
3, the commercial power generation pump for the self-owned power plant boiler feed pump can produce the same, but this pump is too small, many times it may not participate, and Chongqing pump is to expand this area, the future will give this market Impact.
1, the first forward pump speed is low, reducing the NPSH (which is based on the steam pump similarity theorem: the same pump of the NPSH is proportional to the square of the speed!), While the front pump with double suction impeller As well as corrosion-resistant materials, so that the main steam pump to avoid cavitation;
2, due to the low speed of the front pump, the required pump inlet pouring height reduction, thus reducing the height of the deaerator installation, saving the construction costs of the plant.
Boiler feed pump front pump application:
1, commercial power generation on behalf of enterprises: Shanghai electric repair, submerged, Zhengzhou Electric Power, KSB, etc .;
2, enterprise-owned power station: Chongqing pump factory, dark blue, Garley, Cole, Sulzer and so on.
3, the commercial power generation pump for the self-owned power plant boiler feed pump can produce the same, but this pump is too small, many times it may not participate, and Chongqing pump is to expand this area, the future will give this market Impact.
2017年6月2日星期五
Boiler Feedwater Pump Balanced Tube Low Pressure
Boiler feed pump balance tube role:
The balance tube is from the outlet seal ring of the pump, which leads to the inlet end of the pump, which is called the balance tube. Its main role is to balance the axial thrust pump to reduce the axial movement of the rotor to prevent the impeller and the shell friction.welcome to apk buy Boiler Feed water Pumps
When the boiler feed pump is in operation, the impeller outlet discharges the high pressure liquid, and the part flows to the impeller, so that the pressure behind the impeller is basically the same as the outlet, and the front side of the leaf transmission line is the suction end, the pressure is very low. In this way, the impeller on both sides of a larger pressure difference, will produce a point to the pump inlet and axis parallel to the axial thrust, so that the entire rotor pressure to the suction side, serious impeller and pump casing friction or impact, affecting the pump The safe operation, it must try to be balanced.
Balanced axial thrust of many ways, such as the use of double suction impeller or symmetrical arrangement of impeller (multi-stage pump), the use of balance hole, balance plate, balance drum and so on. The balance tube is only one way to balance the axial thrust, which is the pressure liquid behind the impeller, with the balance pipe to the inlet side, so that the pressure on both sides of the impeller balance. This method is simple, but can not fully balance the axial thrust, the remaining axial thrust, need to be set by the thrust bearing to bear.
Simple understanding of the balance plate The principle and the thrust bearing on the turbine similar to the balance tube and the thrust bearing on the role of the return pipe similar.
Boiler Feedwater Pump Balanced Tube Low Pressure Reason:
1, since it is balanced tube, that balance tube pressure should not change too much, or is blocked or missed.
2, the balance tube used to eliminate the axial thrust, the pump outlet valve closed or behind the block, the balance pipe pressure is high; pump exhaust when the balance pipe pressure is low, the normal pressure remains unchanged.
3, high-pressure feed water pumps balance pipe pressure slightly higher than the inlet pressure, if the pressure increases, indicating that the balance between the drum and the balance between the drum sets larger, if the pressure reached 2-3 times the inlet pressure, the best disintegration check.
The balance tube is from the outlet seal ring of the pump, which leads to the inlet end of the pump, which is called the balance tube. Its main role is to balance the axial thrust pump to reduce the axial movement of the rotor to prevent the impeller and the shell friction.welcome to apk buy Boiler Feed water Pumps
When the boiler feed pump is in operation, the impeller outlet discharges the high pressure liquid, and the part flows to the impeller, so that the pressure behind the impeller is basically the same as the outlet, and the front side of the leaf transmission line is the suction end, the pressure is very low. In this way, the impeller on both sides of a larger pressure difference, will produce a point to the pump inlet and axis parallel to the axial thrust, so that the entire rotor pressure to the suction side, serious impeller and pump casing friction or impact, affecting the pump The safe operation, it must try to be balanced.
Balanced axial thrust of many ways, such as the use of double suction impeller or symmetrical arrangement of impeller (multi-stage pump), the use of balance hole, balance plate, balance drum and so on. The balance tube is only one way to balance the axial thrust, which is the pressure liquid behind the impeller, with the balance pipe to the inlet side, so that the pressure on both sides of the impeller balance. This method is simple, but can not fully balance the axial thrust, the remaining axial thrust, need to be set by the thrust bearing to bear.
Simple understanding of the balance plate The principle and the thrust bearing on the turbine similar to the balance tube and the thrust bearing on the role of the return pipe similar.
Boiler Feedwater Pump Balanced Tube Low Pressure Reason:
1, since it is balanced tube, that balance tube pressure should not change too much, or is blocked or missed.
2, the balance tube used to eliminate the axial thrust, the pump outlet valve closed or behind the block, the balance pipe pressure is high; pump exhaust when the balance pipe pressure is low, the normal pressure remains unchanged.
3, high-pressure feed water pumps balance pipe pressure slightly higher than the inlet pressure, if the pressure increases, indicating that the balance between the drum and the balance between the drum sets larger, if the pressure reached 2-3 times the inlet pressure, the best disintegration check.
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