IDROMAT 2, CALPEDA pressure control which is usually used in water pump.

Probably a "load cell" pressure sensor, which is a strain guage sensor fixed to a diaphram, one side attached to the pressure being sensed, the other open to natural air pressure. The more pressure on the diaphram, the more the strain guage deflects, changing its resistance, which is read by the electronics and interpreted to a pressure value which it acts on.

Oleg Systems Co. is a designer and manufacturer of industrial air scrubbing systems including wet dust / fume collectors. Air scrubbing equipment utilizing the principle of wet dust collecting is available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction.

Many industrial processes produce large quantities of gaseous or vaporized contaminants that must be separated from gas stream. Removal of these contaminants is usually achieved through absorption into a liquid or adsorption onto a solid medium. Incineration of the exhaust gas has also been successfully used for the removal of organic gases and vapors. Spray dry air scrubbers are used to absorb and neutralize acidic gaseous contaminants in hot industrial gas streams. They use an alkali spray to react with the acid gases to form a salt. The process heat evaporates the liquid, resulting in a dry particulate that is removed from the gas stream.

Typical industrial applications for spray dry scrubbers are:

* Control of hydrochloric acid (HCl) emissions from biological hazardous waste incinerators.
* Control of sulfuric acid and sulfur trioxide emissions from burning high-sulfur coal.
* Control of sulfur oxides, boric acid, and hydrogene fluoride (HF) gases from glass-melting furnaces.

Spray gas scrubbers conduct four operations:

1) atomization;
2) gas droplet mixing;
3) drying of liquid droplets;
4) removal and collection of a dry product.

These operations are carried out in a tower or a specially designed vessel. The atomizer must disperse a liquid containing an alkali compound that will react with acidic components of the gas stream. The liquid must be distributed uniformly within the dryer and mixed thoroughly with the hot gases in droplets of a size that will evaporate before striking a dryer surface.

In typical spray dryers used for acid gas control, the droplets have diameters from 50 to 200 microns. The larger droplets are of most concern because these might survive long enough to impinge on equipment surfaces. In general, a trade-off must be made between the largest amount of liquid that can be sprayed and the largest droplets that can be tolerated by the equipment.

An important aspect of spray dryer design and operation is the production and control of the gas flow patterns within the drying chamber. Because of the importnace of the flow patterns, spray scrubbers are usually classified on the basis of gas flow direction in the chamber relative to the spray:

- in Cocurrent Scrubber the liquid feed is sprayed with the flow of the hot gas;
- in Countercourent Scrubber the feed is sprayed against the flow of the gas;
- in Mixed Flow Scrubber there’s a combined cocurrent and countercurrent flow.

There are several types of atomizers. High-speed rotating disks achieve atomization through centrifugal motion. Nozzles are also frequently used - both centrifugal pressure nozzles and pnneumatic nozzles. In the centrifugal pressure nozzle, energy for atomization is supplied solely by the pressure of the feed fluid. In the two-fluid nozzles, air (or steam) supplies most of the energy required to atomize the liquid. As a result, two-fluid nozzle can produce very fine atomization, particularly with viscous materials.

Spray air scrubbers include metering valves, pumps and compressores, and controls to assure optimal chemical feed and temperature within gas-cleaning system.

For additional information please refer to http://www.olegsystems.com/blower/Index.html.

Oleg Chetchel
Engineer of Air Transfer Systems
Oleg Systems Co.
http://www.olegsystems.com/dustcollector/Index.html
http://www.olegsystems.com/airknife/Index.html

Oleg Chetchel
http://www.articlesbase.com/health-articles/scrubbers-of-spray-type-for-air-cleaning-676911.html

Also put a loop in you Electric cable towars the plug so if water does run down the mains cable it will drip onto the floor and not into the socket.

thank you.

I think it is unlikely the pump is bad. I have never personally seen a bad Honda fuel pump and I don’t know anybody who has. However, perhaps the most common failure in vintage Hondas is the fuel pump relay, known as the main relay. Check the first source for the whole run-down including a simple test..

2. When testing a starter system problem, a technician notices
that, after first turning on the headlights, the lights go out
completely when the ignition switch is turned to the start
position. What is the most likely cause of the problem?
A. A defective starter motor
B. A starter solenoid that’s stuck in the closed position
C. A discharged battery
D. Loose or dirty battery terminals

3. Two technicians are discussing the capacity of a battery. Technician A says that during
a capacity test, a battery should provide at least 9.6 volts. Technician B says that a
good battery should produce current equal to approximately 5 times its ampere-hour
rating for 15 seconds. Which of the following statements is correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither Technician A nor Technician B is correct.

4. When taking an oil pressure test, a technician finds that the pressure is higher than
the manufacturer’s specifications. Which of the following is a possible cause?
A. A leak in the pickup tube C. A stuck pressure relief valve
B. Worn engine bearings D. Worn oil pump gears

5. Ferrous and nonferrous are the two basic classifications of
A. seals. C. metals.
B. gaskets. D. alloys.

6. Two technicians are discussing oil classifications. Technician A says using an S-class oil
is best used in diesel engines with compression ignition. Technician B says reduced
engine friction with synthetic oil may increase your gas mileage. Which technician is
correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both technicians are correct.
D. Neither technician is correct.

7. The radiator, recovery system, and thermostat are all parts of the engine _____
system.
A. lubrication
C. cooling
B. oil displacement
D. ignition

8. The addition of nearly 25 percent chromium to improve the overall quality of steel
results in
A. gray cast.
C. carbon steel.
B. stainless steel.
D. nodular steel.

9. A silicone coated gasket with a solid steel core and a rubber fiber facing, able to seal
coolant and oil at temperatures up to 2000ºF, is a _____ gasket.
A. valve cover
B. cylinder head
C. oil pan
D. intake manifold

10. Two technicians are discussing the cooling system casting plugs. Technician A says that
disc-type plugs are installed with the convex side facing out. Technician B says that
cup-type plugs are installed with the convex side facing out. Which of the following
statements is correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither Technician A nor Technician B is correct.

11. As a general rule, the maximum gear clearances on a gear-type oil pump should be no
greater than
A. 0.001 inch. C. 0.005 inch.
B. 0.003 inch. D. 0.007 inch.

12. Two technicians are discussing the engine’s lubrication system. Technician A says a
warm engine with 10 psi of oil pressure per 1,000 rpms of engine speed is okay.
Technician B says that any oil pressure between 10 and 80 psi is okay, depending on
conditions. Which techinician is correct?
A. Only Technician A is correct. C. Both technicians are correct.
B. Only Technician B is correct. D. Neither technician is correct.

13. _____ is quite toxic, and can be fatal to humans in fairly small quantities.
A. Ethylene glycol coolant C. Engine water
B. Propylene glycol coolant D. Grain alcohol coolant

14. Head gaskets and exhaust manifold gaskets are both types of _____ gaskets.
A. soft C. silicone
B. hard D. anaerobic

15. Two technicians are discussing engine sealants. Technician A says most current manufacturers
use molded gaskets in their engines. Technician B says aerobic sealants work
with both plastic and metal. Which technician is correct?
A. Only Technician A is correct. C. Both technicians are correct.
B. Only Technician B is correct. D. Neither technician is correct.

16. Two technicians are discussing the diagnosis of an oil leak problem. Technician A says
that an oil leak will always be located at the exact spot where a drip is observed.
Technician B says that a special chemical dye and a black light can be used to detect
an oil leak. Which of the following statements is correct?
A. Only Technician A is correct.
B. Only Technician B is correct.
C. Both Technician A and Technician B are correct.
D. Neither Technician A nor Technician B is correct.

17. To avoid using high-voltage wiring, some electronic ignition systems make use of
_____ systems.
A. emission control C. prove-out circuit
B. multi-

1 D
2 C
3 A
4 C
5 D
6 B
7 C
8 B
9 B
10 D
11 B
12 A
13 A
14 B
15 A
16 B

You can find answers to these questions in the ASE study guides. It is a combination of studying and experience that will help you to pass the ASE test.

If the two pumps are centrifugal then the flow will increase but the flow will not double. This is because a centrifugal pump produces different amounts of flow depending on the discharge pressure. If you look at any centrifugal pump performance curve you can see this effect. At zero discharge pressure the flow is maximum and at maximum discharge pressure the flow is zero.

The down stream piping system has a pressure drop curve that varies with flow rate. The lower the flow rate the lower the pressure drop. The higher the flow rate the higher the pressure drop.

Two centrifugal pumps will produce a flow rate that balances their discharge pressure with the system pressure drop so the two are in equilibrium.

To demonstrate this mathematically takes more time than I have to give. If you do a web search I am sure you will find sites that address centrifugal pumps and system pressure drop curves.