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What is the correct pipe size for a 2inch pipe?

As of the 2013 edition of ASME B16.5, the scope section explains: This Standard states values in both SI (Metric) and U.S. Customary units. As an exception, diameter of bolts and flange bolt ...
Ethan48's user avatar
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What is the correct pipe size for a 2inch pipe?

I would guess that the discrepancy is down to rounding fractional inch sizes to decimal inches ie 2.38 is not exactly 2 3/8" Note that 2.375 (two and three quarter eighth inches) is 60.325mm
Chris Johns's user avatar
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6 votes

Water pump at top floor or bottom?

Think about the pressures. With the pump above the supply line, the pressure at the input of the pump will be lower than the supply. At roughly 2 PSI per foot, you're down about 18 PSI. Since air ...
Olin Lathrop's user avatar
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Why is the friction factor in laminar flow independent of pipe roughness?

In laminar flow, you assume a fuild layer near the pipe wall with flow velocity = 0, and progressivly faster flowing layers towards the middle of the pipe. That's why it's called laminar. Because ...
mart's user avatar
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6 votes

Direction of fluid flow

Heat the pipe at some point, and find the direction in which heat transfers. This will give you the direction of the flow. Caution: Don't do this for flammable fluids. Thanks to @Carl Witthoft for ...
Sina Atalay's user avatar
6 votes

Direction of fluid flow

Yes, purchase an ultrasonic flow meter. Needs a straight length of pipe and very careful placing of the sensors. However, if done well one can get good results, if not then the results can be ...
Solar Mike's user avatar
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5 votes

How Can I Determine Multiple Discharges from a Pipe Network? (Knowing the Inlet Conditions)

You have 9 unknown values you are seeking (the flow at each of 9 outlets), and one that you need to find in the process (the total pressure drop) From the given information, you can assemble ...
Scott B's user avatar
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How Can I Determine Multiple Discharges from a Pipe Network? (Knowing the Inlet Conditions)

The flow of current in a circuit is broadly analogous to fluid down a pipe, with the resistance of wires/resistors combining according to standard laws. If you can break your pipe network down into ...
Jonathan R Swift's user avatar
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Is steel air (argon) tight?

Steel is routinely used for high pressure storage of industrial argon. For practical purposes it is certainly 'gas tight' although there may be a certain amount of atomic level diffusion into the ...
Chris Johns's user avatar
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What material is used to make gas pipes?

In my admittedly limited experience working with plumbers, natural gas pipes are typically made from galvanized steel for interior work, or from black steel pipe for underground. Last-leg fittings and ...
do-the-thing-please's user avatar
5 votes
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One way plastic rubber pipe

Your idea would not be too hard to construct. The one direction tines can be installed through the side of the pipe. Any springy rod material could be used; plastic rod, spring steel, etc. Rubber ...
ericnutsch's user avatar
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4 votes

What is the pressure to secure certain temperature?

Pressure adds only a to the temperature of water. Pump pressure allows water to be moved, it is not used to maintain the temperature of the fluid being pumped. To minimize thermal loss of fluid in a ...
RainerJ's user avatar
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Divide Flow and Maintain Pressure

Short answer: I suspect that so long as your pump is a positive displacement pump (ex: the "vibratory pump" or "rotary vane pump" as described in this webpage about espresso pumps) and is sized to ...
baltakatei's user avatar
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How to determine the "complete turbulence" boundary line in a Moody diagram?

Moody (1944, Trans. ASME 66(8):671-684) gives the following equation for the onset of complete turbulence: $$\frac{1}{\sqrt{f}} = \frac{\textit{Re}}{200}\frac{\epsilon}{D}$$ and attributes it to a ...
Daniel Hatton's user avatar
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Losses through holes drilled in a pipe

So, I attempted to solve a simplified problem using Bernoulli, it is an approximation though, since it doesn't account for the change in flow direction and subsequent turbulence caused after the hole. ...
Petrichor's user avatar
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How to make sure a pipe does not take all of the water from a stream?

You can put a valve on your pipe to control the flow. Or partition the stream by means of a short concrete wall which looks like an indented grout trowel upside-down . Say two opening for the stream ...
kamran's user avatar
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How to design internal wall separation in the PVC tube to use it as a water tanker

Consider the use of a double-lip seal. Figure 1. A double-lipped seal in the false base of the tube. This can then be inserted from the top of the tube to take advantage of the tapered edge. It ...
Transistor's user avatar
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3 votes

Why is the friction factor in laminar flow independent of pipe roughness?

The explanation is due to the fundamental physics of momentum transfer. In all cases of continuum flow, including laminar, transition, and turbulent flow, the zero (no-slip) boundary condition ...
ttonon's user avatar
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How do you determine flow distribution at a dividing T-Junction?

In flow problems, it's generally a good idea to work backwards in realtion to the flow: Find where each branch is ending and the pressure at this point (height, atmospheric pressure, $p_{out 1}, p_{...
mart's user avatar
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3 votes

Direction of fluid flow

If this is a pumped system, try measuring the reaction forces when you turn the system on. For example, if you're trying to measure the direction of fluid flow in a hermetically sealed "black box&...
Emily Conn's user avatar
3 votes
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If you shut down a gas pipeline for a few months would you fill it with gas at full pressure?

The blog is wrong . It requires higher pressures and/or lower temperatures to make hydrates. Hydrates can be a problem at high pressure gas production wells; such as above 5000 psi. That high ...
blacksmith37's user avatar
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Where should I restrict the flow of a pump?

I would add a by-pass valve back to the sump. That will allow the flow to be controlled from max to min.
Solar Mike's user avatar
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2 votes

Water pump at top floor or bottom?

Considering this is a centrifugal water pump, it can provide very little air suction. That means if your pump is airlocked, there's not a shade of a chance it will be able to produce nearly enough ...
SF.'s user avatar
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2 votes

Estimating Potential Flow through a pipe, from tanks to outlet

This link : http://www.calctool.org/CALC/eng/civil/hazen-williams_g gives you a calculator BUT does not include any losses due to junctions, joints or bends. Losses due to all the junctions, joints, ...
Solar Mike's user avatar
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2 votes

Estimating Potential Flow through a pipe, from tanks to outlet

I'm pretty sure that you have all of the info that you should need to determine flow velocity using Bernoulli's equation. Basically you can calculate the hydraulic pressure based on the elevation (...
Secundus's user avatar
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Is there a way to reduce leaks and infrastructure damage when turning water on and off at the scale of city?

It is difficult to provide a useful answer to this question without additional information. For example, what is the system pressurization - operating psi/bars? Having installed ductile iron water ...
AsymLabs's user avatar
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2 votes

Is there a way to reduce leaks and infrastructure damage when turning water on and off at the scale of city?

The problem with older and under-maintained (this is South Africa after all) systems is that the pipes get brittle, rusted and joints fragile and the network won't be able to handle the transient ...
ChP's user avatar
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2 votes

Intuition behind pressure losses in pipes

They do restrict the flow, which would normally cause the pressure to increase upstream of the "roughness" of whatever obstacle you are considering. In practice however, the source of the flow is ...
am304's user avatar
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2 votes

Is steel air (argon) tight?

Just adding on to Mr.Johns's answer, do try to make your threaded fittings according to NPT (National Pipe Thread) or BSPT (British Standard Pipe Taper). Both have a tapered profile which will ...
DBTKNL's user avatar
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Simple way to duct a PVC pipe through a stainless steel sheet cover

The way this would typically be achieved, is with an off-the-shelf "Tank Connector". This essentially replaces the welding operation in your first idea. Simply cut the appropriately sized hole, and ...
Jonathan R Swift's user avatar

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