Question about Electric Kranzle Professional 1600 PSI Pressure Washer

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Posted on Jan 02, 2017

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You can convert pipe size to gallons per minute of flow by calculating the cross-sectional area of the pipe and making some reasonable assumptions about pipe volume and the rate of flow. Pipe sizing is measured by the internal diameter of the pipe, not the overall outside diameter. Once determined, the overall volume can be calculated. Pipe flow is described in gallons per minute. Shorter lengths of pipe will have a greater flow than a longer length of the same diameter. This is caused by internal resistance of the pipe itself. By the same reasoning a larger diameter pipe will have a greater flow or GPM than a smaller pipe at the same pressure or flow rate. Pressure is described as pounds per square inch. The square-inch measurement is determined by the area of the pipe. The pounds are the amount of force that is placed on the liquid to push it through the enclosed space.With that background, you can estimate the flow based on the pipe size.

Find the cross-section area of the pipe. Area is equal to pi times the radius squared or a = 3.14 x r2. A two-inch diameter pipe would have a cross-section area of 3.14 x 12 or 3.14 square inches.

Understand that water has a certain pressure associated with the height of that water. One pound of water pressure, or 1 PSI, is equal to 2.31 feet of elevation in height. In other words, a 1-inch column or pipe of water that is 2.31 feet high will have a pressure of 1 PSI. The overall height -- not volume -- of the pipe corresponds to the pressure. A 6-inch diameter pipe that is 2.31 feet high will only have 1 PSI.

Find the volume of the 2-inch diameter pipe in Step 1 that has a length of 10 feet. Ten feet is equal to 120 inches. Multiply 3.14 square inches, the cross sectional area, times the length. The volume of the pipe is equal to 376.8 cubic inches of volume.

Convert cubic inches into cubic feet. One cubic foot equals 1,728 cubic inches. Divide 376.8 cubic inches by 1,728 cubic inches per cubic foot and the answer is .218 cubic feet. This means that the 2-inch diameter pipe that is 10 feet long has an internal volume of .218 cubic feet.

Calculate the amount of water that can be contained in the section of pipe at any given time. One cubic foot of water is equal to 7.48 gallons. Multiply 7.48 gallons by .218 cubic feet and the amount of water in the pipe is equal to 1.63 gallons.

Find the GPM if the flow of water is one foot per second. Multiply the one-foot per second flow by 60 seconds per minute and the flow is now 60 feet per minute. In other words the water will flow through the 10-foot pipe six full volumes for every minute. Since the piping contains 1.63 gallons per 10 feet of pipe, multiply 1.63 by six and the final GPM is equal to 9.78 GPM of water flow from the 2-inch diameter pipe.

Find the cross-section area of the pipe. Area is equal to pi times the radius squared or a = 3.14 x r2. A two-inch diameter pipe would have a cross-section area of 3.14 x 12 or 3.14 square inches.

Understand that water has a certain pressure associated with the height of that water. One pound of water pressure, or 1 PSI, is equal to 2.31 feet of elevation in height. In other words, a 1-inch column or pipe of water that is 2.31 feet high will have a pressure of 1 PSI. The overall height -- not volume -- of the pipe corresponds to the pressure. A 6-inch diameter pipe that is 2.31 feet high will only have 1 PSI.

Find the volume of the 2-inch diameter pipe in Step 1 that has a length of 10 feet. Ten feet is equal to 120 inches. Multiply 3.14 square inches, the cross sectional area, times the length. The volume of the pipe is equal to 376.8 cubic inches of volume.

Convert cubic inches into cubic feet. One cubic foot equals 1,728 cubic inches. Divide 376.8 cubic inches by 1,728 cubic inches per cubic foot and the answer is .218 cubic feet. This means that the 2-inch diameter pipe that is 10 feet long has an internal volume of .218 cubic feet.

Calculate the amount of water that can be contained in the section of pipe at any given time. One cubic foot of water is equal to 7.48 gallons. Multiply 7.48 gallons by .218 cubic feet and the amount of water in the pipe is equal to 1.63 gallons.

Find the GPM if the flow of water is one foot per second. Multiply the one-foot per second flow by 60 seconds per minute and the flow is now 60 feet per minute. In other words the water will flow through the 10-foot pipe six full volumes for every minute. Since the piping contains 1.63 gallons per 10 feet of pipe, multiply 1.63 by six and the final GPM is equal to 9.78 GPM of water flow from the 2-inch diameter pipe.

Jan 19, 2018 | Plumbing

pressure is one of the variables - other is maximum flow, in case of pressure relief valve (safety valve) if valve was calculated at 50psi and flow of say 10gallon/sec, if you change the diameter, your flow will drop significantly, in case of 1" drop to 3/4" drop will be by nearly 45%! and that is significant drop...

i would suggest do not use reducer but 1" relief valve as required...

if you wan to establish bit more calculations on the subject, go to this site and have play with variations, sele3ct correct calculator and enjoy :

http://www.tlv.com/global/TI/calculator/

reverse engineering will be here:

https://www.physicsforums.com/threads/calculate-water-pressure-coming-out-of-a-pipe.274737/

hope this will help you a bit - do not forget to vote...

i would suggest do not use reducer but 1" relief valve as required...

if you wan to establish bit more calculations on the subject, go to this site and have play with variations, sele3ct correct calculator and enjoy :

http://www.tlv.com/global/TI/calculator/

reverse engineering will be here:

https://www.physicsforums.com/threads/calculate-water-pressure-coming-out-of-a-pipe.274737/

hope this will help you a bit - do not forget to vote...

Feb 23, 2015 | Water Water Heaters

I wouldn't put psi any higher and it should run two small homes

Oct 03, 2014 | Water Sport

Hello, welcome to FixYa.

I understand you have a Whirlpool washer, "*water does not stop from drain pipe*", correct ? You didn't specify if this is a top load or a front load, so I'll reply with a general rule of what may be happening based on your description...regardless of what type of washer it is.

To address this, and as long as water is indeed entering the unit here`s what I find is most common when dealing with the symptom you`ve described ( as long as water isn't filling over the top on top-load machines...that indicates a different issue ) I'd suspect the drain hose is lying down on the floor or is pushed down into the stand-pipe too far.

If the drain hose is below the water level entering the washer it will siphon out immediately. The drain hose must be above the highest point the washer has to fill, ( refer to your manual, but it is typically recommended to be about "48 to "60 in height but not more than 90" or so )

***The standpipe drain requires a minimum diameter standpipe of 2" (5 cm). The minimum carry-away capacity can be no less than 17 gal. (64 L) per minute. A 2" (5 cm) diameter to 1" (2.5 cm) diameter standpipe adapter kit is available. " The top of the standpipe must be at least 39" (99 cm) high and no higher than 96" (244 cm) from the bottom of the washer.***

__Also if it is in a stand pipe insure it isn't pushed in too far, just a few inches and then secure it without completely covering over the opening or that too will cause it to siphon. Check your drain hose. __

Let me know if this was indeed the case and if so please rate the solution accordingly. If not we can move forward from there. Thank's for coming to FixYa and good luck.

Regards,

Macmarkus :)

I understand you have a Whirlpool washer, "

To address this, and as long as water is indeed entering the unit here`s what I find is most common when dealing with the symptom you`ve described ( as long as water isn't filling over the top on top-load machines...that indicates a different issue ) I'd suspect the drain hose is lying down on the floor or is pushed down into the stand-pipe too far.

If the drain hose is below the water level entering the washer it will siphon out immediately. The drain hose must be above the highest point the washer has to fill, ( refer to your manual, but it is typically recommended to be about "48 to "60 in height but not more than 90" or so )

Let me know if this was indeed the case and if so please rate the solution accordingly. If not we can move forward from there. Thank's for coming to FixYa and good luck.

Regards,

Macmarkus :)

Oct 12, 2011 | Whirlpool Washing Machines

1) Guesses: Sounds like a bad single-handled faucet cartridge, or low water flow at faucet, or clogged water filter.

Replace faucet cartridge, clean the aerator, and/or clean sediment out of pipes below sink, and clean water filter at tankless unit each month.

2) For exact measure of problem:

Typical faucet can have 2 gallon per minute flow rate.

2 gpm flow rate means faucet fills 1 gallon container in 30 seconds. Test faucet using 1 gallon container and a cooking timer to get flow rate.

Clean aerator to improve flow rate. Compare kitchen flow rate with other faucets in home.

http://waterheatertimer.org/Low-hot-water-pressure.html

Most homes have 1/2" diameter pipe running to kitchen faucet.

100 feet of 1/2" diameter pipe holds 1.2 gallons of water. This assumes no sediment build-up inside pipes.

http://waterheatertimer.org/Water-heater-recirculation-system.html

Assuming only hot is turned on: If faucet is 100 feet away from water heater, and pipe diameter is unobstructed 1/2" diameter, and faucet has 2 gallon per minute water flow, then hot water should arrive in 36 seconds.

50 feet away, and hot water should arrive in 18 seconds.

If kitchen has single handled faucet, and the handle is raised in the middle, then equal amounts of hot and cold water are drawn at same time. This doubles amount of time for hot water to arrive.

If single handle faucet has a bad cartridge, then faucet can have crossover.

Crossover means that cold water can enter the faucet even if faucet is turned to hot.

Bad single-handled faucet cartridge can delay or stop the arrival of hot water.

http://waterheatertimer.org/Crossover.html

Tankless require maintenance including cleaning combustion parts yearly, de-lime heat exchanger frequently, and clean water filter each month.

http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

http://waterheatertimer.org/pdf/Bosch_Overcoming_fluctuating_temps.pdf

http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Add a comment for more help.

Take a moment and rate answer for accuracy:

And take advantage of fixya expert assistance live.

For a price, expert works with you while you work on water heater or any do-it-yourself project.

Fixya is always less expensive than a service call.

Replace faucet cartridge, clean the aerator, and/or clean sediment out of pipes below sink, and clean water filter at tankless unit each month.

2) For exact measure of problem:

Typical faucet can have 2 gallon per minute flow rate.

2 gpm flow rate means faucet fills 1 gallon container in 30 seconds. Test faucet using 1 gallon container and a cooking timer to get flow rate.

Clean aerator to improve flow rate. Compare kitchen flow rate with other faucets in home.

http://waterheatertimer.org/Low-hot-water-pressure.html

Most homes have 1/2" diameter pipe running to kitchen faucet.

100 feet of 1/2" diameter pipe holds 1.2 gallons of water. This assumes no sediment build-up inside pipes.

http://waterheatertimer.org/Water-heater-recirculation-system.html

Assuming only hot is turned on: If faucet is 100 feet away from water heater, and pipe diameter is unobstructed 1/2" diameter, and faucet has 2 gallon per minute water flow, then hot water should arrive in 36 seconds.

50 feet away, and hot water should arrive in 18 seconds.

If kitchen has single handled faucet, and the handle is raised in the middle, then equal amounts of hot and cold water are drawn at same time. This doubles amount of time for hot water to arrive.

If single handle faucet has a bad cartridge, then faucet can have crossover.

Crossover means that cold water can enter the faucet even if faucet is turned to hot.

Bad single-handled faucet cartridge can delay or stop the arrival of hot water.

http://waterheatertimer.org/Crossover.html

Tankless require maintenance including cleaning combustion parts yearly, de-lime heat exchanger frequently, and clean water filter each month.

http://waterheatertimer.org/pdf/Tankless-maintenance.pdf

http://waterheatertimer.org/pdf/Bosch_Overcoming_fluctuating_temps.pdf

http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Add a comment for more help.

Take a moment and rate answer for accuracy:

And take advantage of fixya expert assistance live.

For a price, expert works with you while you work on water heater or any do-it-yourself project.

Fixya is always less expensive than a service call.

Sep 15, 2011 | Rheem Direct Vent Natural Gas Tankless...

Your question sort of requires two answers as the max flow and max psi are not the same yet relate to one another.

The max flow is ~105 gpm at ~26 ft./hd or 11.3 psi.

The max psi (head) the pump can operate under is 40 psi or ~85 ft./hd at which flow is ~35 gpm.

In other words, in a pipe system with low resistance it moves up to 105 gpm and in a very complex system with lots of elevation changes and a lot of resistance the pump will move about 35 gpm.

PSI as read on a gauge on a filter attached to this pump will NOT be the same as the ratings I am giving you here.

John

The max flow is ~105 gpm at ~26 ft./hd or 11.3 psi.

The max psi (head) the pump can operate under is 40 psi or ~85 ft./hd at which flow is ~35 gpm.

In other words, in a pipe system with low resistance it moves up to 105 gpm and in a very complex system with lots of elevation changes and a lot of resistance the pump will move about 35 gpm.

PSI as read on a gauge on a filter attached to this pump will NOT be the same as the ratings I am giving you here.

John

Aug 24, 2011 | Pentair Whisperflo 1 12 Hp Pool Pump Wf26...

Hello, welcome to FixYa.

You specified this is a new or recent install, and as long as water is indeed entering the unit here`s what I find is most common when dealing with the symptom you`ve described (**as long as water isn't filling over the top...that indicates a different issue** )

I'd suspect the drain hose is lying down on the floor or is pushed down into the stand-pipe too far.

If the drain hose is below the water level entering the washer it will siphon out immediately. The drain hose must be above the highest point the washer has to fill, (* refer to your manual, but it is typically recommended to be about "48 to "60 in height but not more than 90" or so* )

****The standpipe drain requires a minimum diameter standpipe of ****2" (5 cm). The minimum carry-away capacity can be no less than ****17 gal. (64 L) per minute. A 2" (5 cm) diameter to 1" (2.5 cm) ****diameter standpipe adapter kit is available. ****" ****The top of the standpipe must be at least 39" (99 cm) high and no ****higher than 96" (244 cm) from the bottom of the washer.****

Also if it is in a stand pipe insure it isn't pushed in too far, just a few inches and then secure it without completely covering over the opening or that too will cause it to siphon.

Check your drain hose. Let me know if this was indeed the case and if so please rate the solution accordingly. If not we can move forward from there.

Thank's for coming to FixYa and good luck.

Regards,

Macmarkus :)

You specified this is a new or recent install, and as long as water is indeed entering the unit here`s what I find is most common when dealing with the symptom you`ve described (

I'd suspect the drain hose is lying down on the floor or is pushed down into the stand-pipe too far.

If the drain hose is below the water level entering the washer it will siphon out immediately. The drain hose must be above the highest point the washer has to fill, (

Also if it is in a stand pipe insure it isn't pushed in too far, just a few inches and then secure it without completely covering over the opening or that too will cause it to siphon.

Check your drain hose. Let me know if this was indeed the case and if so please rate the solution accordingly. If not we can move forward from there.

Thank's for coming to FixYa and good luck.

Regards,

Macmarkus :)

Jun 02, 2011 | Admiral AW22 Top Load Washer

- NPT - National Pipe Thread Taper
- FPT - female (internal) National Pipe Taper threads
- MPT - male (external) National Pipe Taper threads
- NPTF - Dryseal American National Standard Taper Pipe Thread (ANSI B1.20.3)

Characteristics of NPT (also known as ANSI/ASME B1.20.1 Pipe Threads, General Purpose):

- tapered thread
*1o 47'* - truncation of roots and crests are flat
*60o*thread angle- pitch is measured in threads per inch

Each thread size has a defined number of threads per inch - TPI, or pitch. The

NPT - American Standard Pipe Thread Taper 1) Pipe Size

TPI - pitch Approximate Length of Thread

OD

NPT threads are not interchangeable with NPS - National Pipe Straight - threads.

NPT threads may look similar to ISO 7/1 threads. However, ISO and NPT threads should not be mixed. ISO threads have 55o taper angle versus 60o for NPT. The NPT root and crest configurations are also different from ISO. For ISO threads pitch is usually measured in millimeters (may be expressed in Inch). The pitch are different.

Feb 28, 2011 | RTO 1 1/4" Drop Pipe Bronze Pitless...

The low side port of the 2005 GMC savanna Van is located on the low pressure side of the compressor.

This is found by locating the compressor driven by a belt that has a clutch that engages and disengages as the a/c cycles.

The low pressure piping is always in the larger diameter piping, and the high pressure side is always contained in the smaller diameter piping.

Therefore, follow the thick pipes from the compressor up to the accumulator, which looks like a large can of soup. On the accumulator receiver/drier is a port that connects to the tube that is connected to the can of r134a freon refrigerant.

Simply quick connect the tube to the low side port, which is located on the 'thick' tubing or on the accumulator and then fill until the low side pressure is 25 psi to 45 psi while the compressor is running.

When the car is off and the compressor is not running, the pressure should be 75 psi to 100 psi on a hot day.

Hopefully the system doesn't have a leak slow or fast in it.

This is found by locating the compressor driven by a belt that has a clutch that engages and disengages as the a/c cycles.

The low pressure piping is always in the larger diameter piping, and the high pressure side is always contained in the smaller diameter piping.

Therefore, follow the thick pipes from the compressor up to the accumulator, which looks like a large can of soup. On the accumulator receiver/drier is a port that connects to the tube that is connected to the can of r134a freon refrigerant.

Simply quick connect the tube to the low side port, which is located on the 'thick' tubing or on the accumulator and then fill until the low side pressure is 25 psi to 45 psi while the compressor is running.

When the car is off and the compressor is not running, the pressure should be 75 psi to 100 psi on a hot day.

Hopefully the system doesn't have a leak slow or fast in it.

Aug 17, 2010 | 2005 GMC Savana

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