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Q: What is gpm in a 3 inch pipe at 90 psi?
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If you have a multi story building and with 40 psi water pressure coming in at what height do you put a booster pump?

This depends on what your target pressure is. If the height of the pipe is H in feet, the pressure at the bottom of the pipe from the column of water is 0.036127292 * H * 12 where 0.036127292 is the density of water in lbs/in^3. Thus, if your initial water pressure is I, the pressure at H feet will be I - 0.036127292 * H * 12 So you will have Height | Pressure +--------- 0 ft | 40 psi 10 ft | 35 psi 20 ft | 31 psi 30 ft | 27 psi 40 ft | 23 psi 50 ft | 18 psi 60 ft | 14 psi 70 ft | 10 psi 80 ft | 5 psi 90 ft | 1 psi 100 ft | 0 psi One will be required above 90 ft. You'll probably want one above 40 ft. Derivations: eq means equals. This wiki eats equals signs. D eq diameter of the pipe in inches, H eqheight in feet D / 2 eq R Area (A)(in^2) eq pi * R ^ 2 Volume (V)(in^3) eq A * H * 12 eq pi * R ^ 2 * H * 12 Water weight (W)(lbs) eq V * 0.036127292 eq pi * R ^ 2 * H * 12 * 0.036127292 Pressure (P)(psi) eq W / A eq V * 0.036127292 eq pi * R ^ 2 * H * 12 * 0.036127292 / pi * R ^ 2 eq H * 12 * 0.036127292


How long will a 4 cfm air drill last on 100 gallon tank pressurized at 3000 psi with a regulator stepping it down at 90 psi?

well, 100 gallons at 3000 psi is 3333 gallons at 90 psi, which is 443 cubic feet, or 110 minutes. However, most air tools are rated for cfm's at atmospheric pressure, which is 14.7 psi at the surface, so 2714 minutes. This is average usage, not continuous, but still quite a long time. Now, if you go down 33 feet, the pressure doubles, so you have to cut the time down - the actually calculation is hazy, as the ambient pressure doubles, but the pressure differential does not - however, you will need to increase the pressure going to the tool by 15 psi for every 30 feet of depth, or else it won't work right.


How much 90 psi air is available in 1 tank with peak pressure of 135 psi?

This depends on several factors. A smaller tank will have less air available at the same pressure than a larger tank. Also, the cubic feet per minute rating of the compressor is a factor, with a larger compressor rating allowing for more usage.


What issues arise when cutting a 6 inch schedule 80 x 90 degree elbow to make 2 x 45 degree elbows?

cut a 22 1/2 out of it


How do you select hydraulic actuator?

pump selection requires many factors like the flow rate requirements, speed , pressure,cost ,maintenance, performance,reliability. step1: find out what type of actuator your are going to use depending on the type of loading .cylinder type actuator or a rotary type actuator like a hydraulic motor. step2: find out the flow rate requirements depending upon the distance through which the load is to be moved in a specified time limit. step3: find out the pressure requirements depending upon the magnitude of the load and the size of the actuator.now along with the flow rate you can find the power requirement of the pump and select the prime mover do drive the pump. step4:find out the speed of the pump and along with flow rate calculations determine the pump size. step5: gear ,vane and piston are the types of pump available for the fluid power applications.there are many subtypes available for these pumps. gear pump= 500-3000 psi,1200-2500 rpm,efficiency 80-90 ,flow capacity 1-200 gpm vane pump=1000-2000 psi,speed 1200-1800 rpm, efficiency 80-95, flow capacity 1-80gpm piston pump=2000-12000 psi, speed 1200-3000 rpm, efficiency 85-98,flow capacity 1-200 gpm. apart from these determine the power losses etc.,

Related questions

2 inch pipe how much flow?

There are way too many variables to answer this.what's the head pressure?how long is the run?any 90 or 45 degree bends?what type pipe?Pipe has friction , the longer the run the more pressure that is needed to get the same flow, same with bends in the pipe or fittings.For swimming pools we normally figure we can flow 60 gpm with 2 inch pipe.but again there are things to consider.


What is the cut off measurement of a 90 degree pipe fitting?

pipe size(inch)x38.1


What is take off measurement for 90 degree 8 inch pipe?

The take-off for a standard radius 90 is one and one half the diameter of the pipe. Example: 6 inch 90 has a take- off of 9 inches. The take-off for short radius 90 would be the dia. of the pipe. Long radius 90 is 2 times the pipe diameter.


What is socket weld x pipe?

What it's the take out off 12 inch 90


What is the flow of 5 hp motar pump?

The flow of 5 hp motor pump is around 90 GPM.


How many gallons of water in a two inch pipe 90 feet long?

14.7 gallons of water.


What an 8 inch 90 degree pipe fitting take off when rolled 45 degrees?

90 degree angle rolled on a 45


90 mega pascals equals how many psi?

90 million Pascal is about 13,053 psi


How many bends in half inch pipe before you need a box?

you need a box before your pipe run has 360 degrees of bend, or 4, 90's


Does 2.4 cfm 90 psi equal 4.4 cfm 45 psi?

350cfm how much psi 350cfm how much psi


End to end length required for 3 threaded pipe between two 90 degree elbows?

6 ft 1/2 inch


Psi to crush an empty pop can?

90