# Water pressure question involving pipe, flexible hose and a filter

• jkramer
In summary, the conversation discusses water pressure issues caused by using different sizes of pipes and hoses with a filter in the system. It is mentioned that the pressure drop will depend on the flow rate and that for a quantitative answer, further research will be necessary.
jkramer
TL;DR Summary
water pressure issues
Summary: water pressure issues

what happens when you take water from a 3/4 inch pipe copper to 1/2 inch flexible braided hose through a filter for a 3/4 pipe back through a flexible braided hose 1/2 inch tube to 3/4 inch copper pipe?

Welcome to the PF.

Can you say more about your question? You are experiencing more water pressure drop than you expect in your system? Can you upload a sketch (use the "Attach Files" link below the edit window), and give us a rough idea of the pressure in each segment that you are seeing? Is there a vertical drop/climb associated with the system? What are the specs on the filter?

It depends on the rate of flow. Consider the extreme case in which we cap the far end of the last pipe so no water flows: the pressure will be the same everywhere if the piping is all horizontal (if not, the pressure will be higher at the low points).

If the flow is non-zero there will be a pressure drop across the filter and at each of the constrictions; these drops will increase as the flow rate increases.

If you need a quantitative answer (how much pressure drop at a given flow rate) you will have to spend some time with a engineering handbook and the filter specs.

## 1. What is water pressure?

Water pressure is the force that water exerts on the walls of a container or pipe. It is measured in pounds per square inch (psi) and is affected by factors such as the height of the water source, the diameter of the pipe, and any obstacles or filters in the way.

## 2. How does water pressure change in a pipe?

Water pressure decreases as it travels through a pipe due to friction with the walls of the pipe. The longer the pipe, the more friction and the lower the water pressure. Additionally, any changes in the diameter of the pipe or the presence of obstacles or filters can also affect water pressure.

## 3. What is the purpose of a flexible hose in a water pressure system?

A flexible hose is used to connect two pipes together and allow for movement or flexibility. It can also be used to redirect water flow or to connect to a specific type of fixture, such as a garden hose or shower head.

## 4. How does a filter affect water pressure?

A filter can decrease water pressure by restricting the flow of water through it. This is because the filter is designed to remove impurities and debris from the water, causing it to slow down as it passes through the filter. However, a filter can also increase water pressure if it is clogged or damaged, as it can create a blockage and cause water to back up and increase in pressure.

## 5. How can I measure water pressure in a pipe?

Water pressure can be measured using a pressure gauge, which is typically attached to a spigot or faucet. The gauge will display the water pressure in psi. Alternatively, a plumber can use specialized equipment to measure water pressure at different points in a pipe system.

• Mechanical Engineering
Replies
9
Views
294
• Mechanical Engineering
Replies
5
Views
582
• Mechanical Engineering
Replies
20
Views
7K
• Mechanical Engineering
Replies
38
Views
731
• Mechanical Engineering
Replies
4
Views
875
• Mechanical Engineering
Replies
15
Views
954
• Mechanical Engineering
Replies
5
Views
1K
• Mechanical Engineering
Replies
1
Views
2K
• Mechanical Engineering
Replies
12
Views
2K
• Mechanical Engineering
Replies
2
Views
401