Figure 1.4 The free energy path in emulsion breakdown. Solid line: flocculationþcoalescence. Broken line: flocculationþ coalescenceþ sedimentation. Dotted line: flocculationþ coalescenceþ sedimentationþOstwald ripening. Figure 1.3 Schematic representation of emulsion formation and breakdown (see text for details). Emulsion Products is a lead supplier of liquid asphalt binders and emulsions for paving, surface treatments, preservation, repair and dust control. SUPPLYING SUPERIOR QUALITY PRODUCTS TO ALASKA FOR OVER 30 YEARS. Paving Products. Products That Make For A Highly Durable Asphalt Pavement PAVEMENT PRESERVATION. How We Ensure The Preservation Of. Alaska Fish Fertilizer is a 5-1-1 fertilizer concentrate that can be used for organic gardening on all types of indoor and outdoor plants. This natural based formula provides a rich source of organic matter that breaks down and releases nutrients into the soil to enhance the strength and vigor of your plants. Emulsion sol, suspension Example meringue, whipped cream milk, mayonnaise, butter. ∆W is the free energy of the interface and corresponds to the. 5 10 ∆ = ⋅ ⋅ A m m −8 2 3 = 1.3 D nm experimental values Machine Conditions for W V = 5⋅106 J m-3 Maximum D d in DSD STR a).
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Tecumseh Carburetor
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Tecumseh Carburetors
Welcome to this site where you will find information on Tecumseh Carburetor, who supply products like lawn mowers, garden tractors, snow throwers, tillers and other outdoor power equipments. They have been in this business since 1934. Raymond Herrick who started the company was a very well qualified, skilled and experienced machinist who has also worked with Henry Ford.
He gathered all the knowledge of the assembly line. In 2007 Tecumseh Products Company sold the Tecumseh Power engine manufacturing division to Platinum Equity LLC who sold the parts rights to Certified Parts Corporation in 2009. Since 2008 only OEM (original equipment manufacturer) Tecumseh parts are still available for purchase bearing the Tecumseh brand name. This site offers all information on the Tecumseh Carburetor to help you solve any problems you may have.
If you are looking for information about such products and equipments you have come to the right place. Below, you will find the required information about each carburetor that Tecumseh ever manufactured. This information will help you to distinguish between each model. Not only Tecumseh, we also provide information about many other carburetor. Our main aim is to ensure consistent flow of information about Tecumseh small engines and the related carburetors.
How to Identify a Tecumseh Carburetor Parts:
To identify the right Carburetor it is important to know all the distinguished facts and features of Tecumseh so that you can separate best from the rest.
First series of Carburetors includes Dual System Carburetors
With a large prime bulb placed on side of the carburetor Tecumseh dual system puts into use best 4-cycle crankshaft rotary mower.
Series 1 Carburetor
There are a variety of styles that are easily available in this category. Series 1 comes in both the 2 cycle and 4 cycle variants with vertical and horizontal shaft engines that ranges from 2 to 4 Horse Power range. As compared to series 3 and series 4 these have a smaller venturi.
Available in float style a distinguished fact which set apart this series from all other variants is the provision of an adjustable idle in some models and main while remaining has a similar fixed main provided with an easy to adjustable idle. The application with fixed speed comes only with fixed main system whereas the drill option remains unavailable in the idle system. If you are using this carburetor after a long time, then make sure that it is cleaned with a high quality and recommended cleaner so that dust and varnish can be removed.
Series 1 Emission
Similar to standard series 1 carburetor, the emission equivalent in this series has a fixed idle as well as main. When it is in use, the cap on idle restrictor jet is removed otherwise it remains on whole time. For identification purpose you can easily look for the fixed main jet that is a part of bowl nut in the model. Aball plug seals the passage and is easily visible from the bottom. Another added feature of this carburetor includes serviceable main nozzle emulsion tube.
Series 2 Carburetors
Mainly used for on outboards engines, series 2 are yet another entry into the list of carburetors. As compared to series 1 these are quite similar with only difference being that it comes with a remotely adjust idle mix screw along with an in built fuel pump.
Inside the fuel pump, element alternately inflates and then deflates with the pulsations of crankcase that would alternately open and close the flap valves inside. During installation of the fuel pump's element, it is really important to take care of the slop opening angle that must be somewhere around 45 degrees for proper installation. It has been observed that deviation from this angle can damage the diaphragm.
Series 3 and Series 4 carburetors
Mainly used on 8 through 12.5 horsepower in 4-cycle engines in these carburetors, the venturi size is bigger than that of series 1 and dual system carburetors. https://truehload675.weebly.com/get-backup-pro-3-5-plus.html. Identification mark is the presence of bosses, symbolic on each side of an idle mixture screw.
Series 3 and Series 4 Emission
Series 3 and 4 come with really delicate piece of distinction and these generally come with emission equivalent that has a fixed idle as well as main. The idle restrictor of these carburetor comes with a cap that is removed as soon as the machine comes in use. Few features like fixed main jet along with bowl nut, Aball plug as well as serviceable main nozzle emulsion tube remains same as in the series 1 emission.
The major point of difference among series 3 and series 4 lies on the fact that in series 3 one screw is on the throttle and choke plates whereas series 4 comes with two screws on throttle as well as choke plates.
Vector Carburetors
A Vector Carburetor is a non-adjustable float feed having 1 piece extruded metallic aluminum body. All the components of these type of carburetors like float bowl, fuel bowl, needle, float, nozzle and venturi , seat and nozzle emulsion tube can easily be serviced without any need to remove the entire carburetor body out from the engine.
Series 6 carburetors – 4 Cycle
This series of carburetors comes with each 2 and 4-cycle engines. As compared to dual system carburetors, their venturi is comparatively larger and these make uses of a simple idle system. With all nonadjustable variants, their 4 cycle version comes with a provision of a stepped primer bulb.
Series 6 carburetors 2-cycle
Mainly used on TVS/TVXL840 engines series 6 are quite similar in looks as well as the operation mechanism of the carburetors mainly used in case of 4 cycle engines. However few basic difference points are:
1 Identified by a typical L stamp present on the nut, the bowl nut is on left hand thread.
2 In order to reduce erratic float travel, there is a provision of a damping spring that is set up on a float hinge pin.
3 The two mounting bosses that extend outwards from body of the carburetor.
Series 7 carburetor (Emission)
Mainly put to use in case of medium sized frame overhead valve engines with a vertical shaft, series 7 forms efficient emission grade carburetor. Balsamiq mockups 3 1 7 download free. Tecumseh series 7 carburetor parts comes with mounted main as well as idle jets that are ideally placed within the bowl of the carburetor. Basically all the parts can be serviced without any need to remove whole carburetor body out of the engine.
Series 8 (Emission)
Series 8 comes with both mounted as well as main idle circuit. By means of a restrictor jet, the fixed idle setup has been made possible. Alike all the other series a models Cap feature on idle restrictor jet can also be traced down in this model. Additionally, these types also include the feature of being able to service the main nozzle within the emulsion tube along with a stepped primer bulb.
Series 9 Carburetor
Tecumseh carburetor series 9 is an associated emission that makes use of identical carburetor body as that in the case of series 8 however with a common mounted idle system that is identical to the one used in the case of series 6. A unique feature of these series includes a discharge port that is ideally located exactly at the 7 ‘o' clock position on the throttle ending of that particular carburetor.
This series can easily be identified by the unique ability to service the main nozzle within the emulsion tube, stepped primer bulb and the provision of a non-drilled idle inter mixture well. These unique feature makes this carburetor different from others.
Series 10 (Emission)
With a great similarity to series 8, the series 10 has a slight difference with just an addition of choke. A fixed idle main feature is also been provided to assist easy start during cold weather.
Series 11
Series 11 has a provision of fuel chamber, assembled to the carburetor from where fuel is fed into the venture throughout the starting warm up period. The feature has been introduced mainly to eliminate surging, hunting, and false starts and has proven out to be of quite a use in eliminating these. A black restrictor cap can easily be used for the identification purpose. The gray is 640053 whereas640200 is part number.
Series 11 Bridged
These are almost identical with series 11 carburetor and an exception of the center leg.
Carburetor Cleansing Series 11 and Series 11 Bridged
One of the most striking features includes the metering jet that can easily be seen upon fuel well removal but Welch plug is a non-serviceable portion. Most likely preference had always been to soak a carburetor not more than half an hour but series 11 is the exception. For safe working, it is important to service all Tecumseh Power carburetors keeping in mind carburetor safety # 696410 making use of a .012'' (.304 mm) gauge wire.
3 The two mounting bosses that extend outwards from body of the carburetor.
Series 7 carburetor (Emission)
Mainly put to use in case of medium sized frame overhead valve engines with a vertical shaft, series 7 forms efficient emission grade carburetor. Balsamiq mockups 3 1 7 download free. Tecumseh series 7 carburetor parts comes with mounted main as well as idle jets that are ideally placed within the bowl of the carburetor. Basically all the parts can be serviced without any need to remove whole carburetor body out of the engine.
Series 8 (Emission)
Series 8 comes with both mounted as well as main idle circuit. By means of a restrictor jet, the fixed idle setup has been made possible. Alike all the other series a models Cap feature on idle restrictor jet can also be traced down in this model. Additionally, these types also include the feature of being able to service the main nozzle within the emulsion tube along with a stepped primer bulb.
Series 9 Carburetor
Tecumseh carburetor series 9 is an associated emission that makes use of identical carburetor body as that in the case of series 8 however with a common mounted idle system that is identical to the one used in the case of series 6. A unique feature of these series includes a discharge port that is ideally located exactly at the 7 ‘o' clock position on the throttle ending of that particular carburetor.
This series can easily be identified by the unique ability to service the main nozzle within the emulsion tube, stepped primer bulb and the provision of a non-drilled idle inter mixture well. These unique feature makes this carburetor different from others.
Series 10 (Emission)
With a great similarity to series 8, the series 10 has a slight difference with just an addition of choke. A fixed idle main feature is also been provided to assist easy start during cold weather.
Series 11
Series 11 has a provision of fuel chamber, assembled to the carburetor from where fuel is fed into the venture throughout the starting warm up period. The feature has been introduced mainly to eliminate surging, hunting, and false starts and has proven out to be of quite a use in eliminating these. A black restrictor cap can easily be used for the identification purpose. The gray is 640053 whereas640200 is part number.
Series 11 Bridged
These are almost identical with series 11 carburetor and an exception of the center leg.
Carburetor Cleansing Series 11 and Series 11 Bridged
One of the most striking features includes the metering jet that can easily be seen upon fuel well removal but Welch plug is a non-serviceable portion. Most likely preference had always been to soak a carburetor not more than half an hour but series 11 is the exception. For safe working, it is important to service all Tecumseh Power carburetors keeping in mind carburetor safety # 696410 making use of a .012'' (.304 mm) gauge wire.
Tecumseh Carburetors Adjustment:
Dellorto Carburetor
These types of carburetors possess a great similarity with the dual system carburetor. It's no adjustments offers a primer assisted starting, a non corroding float with a viton tipped needle. The fuel inlet angle is completely adjustable. Fuel inlet angle is connected to the body of carburetor making use of a banjo bolt. Most common use of these series is found in TVS rotary lawnmower engines.
Walbro LMK Carburetor Rapidweaver create template based websites rapidly 8 4.
These come with a fixed main, bigger venturi along with an idle that can easily be adjusted. Few outstanding features includes a non-metallic choke shaft, non corroding float and a very useful viton tipped needle. Walbro name can easily be found on the body of carburetor and founds application on plenty of OHV engines.
Walbro WHG Carburetor
With an option of easy to be designed on fully easy to adjust, single adjust or non- adjustable carburetor these comes with a large venturi. One of the best features to recognize these types are the large square mountings surface that can be located on the choke end. Best application is its use on OH cast iron engines.
Diaphragm Carburetors:
One of the striking features of this type is that as compared to float style carburetors, diaphragm can easily be operated at even severe angles. These type of carburetors lack fuel bowl and need fuel supply to be situated at a position from where it can be gravity fed. Moreover, you need to make sure that high quality synthetic fuel is used. This will help you to get optimum performance as well as smooth working of the engine.
WTA Walbro Carburetor
These have a distinguished rubber type diaphragm that remains open to atmospheric pressure on one side and intake pressure on the other. On TC200 and 300 engines WTA is put to use. Additional features include a choke with a complete metal fuel inlet fit.
WT Walbro Carburetor
The WT Walbro put to use mainly for TC-II type of carburetor. This type of carburetor comes with no choke lever and also has a combining plastic along with metal fuel inlet fitting.
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Tillotson HU Carburetor
Mainly used in the case of TC-II. It can comes with a main that can easily be replaced and an easily visible Tillotson on the pump cover.
Tecumseh Power TC Carburetor
These comes with a fixed idle along with a main that easily meets all the emission standards of two cycle engines. Serviceable main jet is easily accessible after removing the plastic cap. As a compliance with the emission regulations, the jet must be covered after cleaning. If not covered after cleaning, external moisture and dirt can cause the carburetor to stop functioning and the engine will also become inactive.
Conclusion
The information is quite useful for all your future reference related to carburetors and information can easily be used to enhance you knowledge as well. It has been advised that users must not repair any Tecumseh part on own and refer to the user manual provided with the product. In case you need some serious help, refer to the warranty at dealer of shipping company. These are the best suited carburetors based on quality as well as price.
How to open disk image file on mac. here we gonna study about emulsion from subject pharmaceutics 2 and chapter Emulsion in easy way like full chapter with easy language easy to understand and important for examinations in MSBTE as well as others .the first is only emulsion suspension is in other part.so lets get started.
Emulsion and Suspension
An Emulsion is a biphasic liquid preparation containing two immiscible liquids, one of which is dispersed as minute globules into the other. The liquid which Is converted into minute globules is called the 'dispersed phase' and the liquid in which the globules are dispersed is called the 'continues phase '
Advantages
1.medicines having an unpleasant taste and order can be made more palatable for oral administration in the form of emulsion.
e.g castor oil ,cod liver oil.
2.emulsion provide protection against drugs which are responsible for oxidation and hydrolysis.
3.many preparation such as creams, lotions are formulated in emulsion.
4.intravenous emulsion containing fats, carbohydrates and vitamin can be administered to the patient who are unable to take orally.
Types of emulsion
1.oil in water emulsion-(o/w)
2.water in oil emulsion-(w/o)
Oil in water
In this type of emulsion oil is dispersed phase and water is in continuous phase. this type of emulsion mostly used for internal use.
Gum acacia ,tragacanth, methyl cellulose, synthetic substance and soaps are used and as emulsifying agent.
Water in oil
In this water is dispersed phase and oil is in continuous phase
Wool fat, resins , bees wax, and soaps from divalent bases are used as an emulsifying agent.
This type of emulsion mainly used for externally as lotions and creams.
Tests for identification of type of emulsion
The following test are used to differentiate between o/w and w/o .
1.dilution test-
the emulsion is diluted with water if emulsion remains stable after dilution it is o/w emulsion. If emulsion breaks on dilution it is w/o type.
2.dye test-
the scarlet dye is used in this test this dye is mixed with emulsion then place a drop of it on a microscopic slide and cover it with cover sleep. And examin under the microscope. If dispersed globule appear red and the ground is colourless then it is o/w type of emulsion and if dispersed globules are colourless and ground is red then it is w/o type.
conductivity test- water is a good conducter of heat and electricity.
To perform conductivity test dipped pair of electrodes and connect a low voltage bulb in it. If bulb glow current then it is w/o type.
Formulation of emulsion
- Emulsifying agents- the emulsifying agent used to reduce interfacial tension between two phases that is liquid and oil phase.
Emulsifying agents also known as emulgents or emulsifiers.
There are lot of emulsifying agents available to form or prepare a stable emulsion but it is very difficult to select a proper emulsifying agent for the development.
No single emulsifying agent can fulfil all the properties require for preparation of stable emulsion therefore they have to use 2 or more emulsifying agents.
QUESTION -DEFINE OR EXPLAIN HLB METHOD
Griffin device is useful method for calculating balance mixture of emulsifying agents to form a particular type of emulsion, it is called hydrophile lipophile balance or HLB method. All emulsifying agents has a given no on HLB scale which is divided into 18 units. Emulgents with high no(8-18) indicates hydrophilic properties and they produce o/w type of emulsion. And opposite emulgent with lower no (3-6) indicates lipophilic properties and produce w/o type of emulsion.
QUESTION-
Cisco packet tracer 7 0. Write down the Classification of emulsifying agent?
1.natural- a) vegetable source- gum acacia, tragacanth, agar, pectin, starch, irish moss.
- b) animal source-wool fat, egg yolk, gelatin.
2.semisynthetic polysachharides- methyl cellulose, carboxy methyl cellulose.
3.synthetic – anionic ,cationic, non ionic.
4.inorganic- milk of magnesia, magnesium oxide, magnesium trisilicate, magnesium aluminium silicate, bentonite.
5.alcohols- carbowaxes, cholesterols, lecithins.
Properties of ideal emulsifying agents
1.it should be capable of reducing interfacial tension between two immiscible liquids.
2.it should be compatible with other ingredients.
3.it should be non toxic.
4.it should produce and maintain consistency of the emulsion.
5.it should be chemically stable.
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Preparation of emulsions.
The following methods used for preparation on small scale.
Dry gum methods-(what is mean by primary emulsion)
1.measure required quantity of oil in a dry measure and transfer it to dry morter.
2.add calculated quantity of gum acacia and triturate rapidly to form a uniform mixture.
3.add required quantity of water and triturate vigorously till a clicking sound is produce product become white or nearly white is produce at this stage are called primary emulsion.
4.add more water for required volume
| Sr no. | Type of the oil | Ratio of Oil : water : gum | examples |
| 1 | Fixed oil | 4 : 2 : 1 | Castor oil, almond oil, arachis oil, cod liver oil, |
| 2. | Mineral oil | 3 : 2 : 1 | Liquid paraffin |
| 3 | Volatile oil | 2 : 2 : 1 | Terpentine oil, Peppermint oil, Cinnamon oil. |
2.wet gum method
In his method the proportion of oil water gum required for preparing in the primary emulsion as the given above.
1.calculate the quantity of oil water and gum required to prepare primary emulsion.
2.powder the gum acacia in a mortar. add water and triturate it with gum.
3.add required quantity of oil in small portion rapid trituration.
4.add more water to produce uniform emulsion
5.transfer it to a bottle or container .
3.bottle method
This method id used for the volatile and other viscous oils.
The proportion of oil water gum is 2:2:1
1.take required quantity of oil and transfer into bottle .add gum acacia in it
2.shake the bottle vigorously ,until they mixed with each other
3.add calculated amount of water all at once.
4.shake mixture to form primary emulsion.
5.add more water to make require volume.
Other methods
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In this various blenders and homogenisers are used for preparing emulsions.
Hand homogenisers ,silverson mixer homogeniser and colloidal mill are used for preparing emulsion.
These homogenisers are bases on principle that the large globules in coarse are converted into smaller globules by passing through narrow orifice
The coarse product is produced in mortar and transferred into the homogeniser until desire product get .
Emulsion is the nothing but combination of water and oil which having therapeutics activity. this is some of points we are clear now if you want to know more about emulsion you can check on this WIKIPEDIA
for any queries and help comment us tell us what else we can do for you and share with your friends and let them grow also.
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