We recommend that you use Polypropylene (poly) pipe for the flow bypass device. Poly pipe is available in a number of standard diameters. Select pipe with an ‘internal’ diameter at least 1.5 times larger than your required orifice diameter. Note that pipes are usually referred to according to their ‘nominal’ diameter.
How to size a bypass pipe?
In a primary-secondary system, the bypass pipe should be the same diameter as the pipe going into the largest chiller. Its length should be about 8-10 pipe diameters long or have an equivalent pressure drop.
What is bypass line in piping?
A bypass is a system of pipes, pumps, hoses, and valves that help divert the flow from a pipe section that is under repair or rehabilitation. This temporary diversion allows the flow to continue when the primary line is blocked for rehabilitation.
How do you measure a bypass pump?
The lift for sewage bypass pumping operations is determined from measuring the distance from the top of the liquid in the manhole to the center of the impeller. This distance will determine the type of pump needed for the bypass pumping job.
How does a bypass pump work?
They allow work to take place by pumping fluid (sewage, trash, water, etc.,) around the construction or work area without stopping the normal flow of the fluid. In layman’s terms, the bypass might be called a re-route of the pumpage, a pump-around, or a diversion of the fluid.
What is the purpose of bypass valves for pump?
Pressure bypass valves serve to control pressure in a system by diverting a portion of the flow. Typically they bypass fluid from the outlet of a pump back to the reservoir.
What type of valve should be used to bypass a control valve?
Valves Suitable for Use as Bypass Valves
In such cases, globe valves are a suitable type of valve.
What is bypass control?
The duty of the bypass system calls for an immediate opening of the bypass control valves in the case of a partial- or full-load rejection. The bypass control systems open the bypass valves to the same degree as the turbine control valves were before being closed, that is, the occurrence of unacceptable conditions.
Is a bypass valve a check valve?
110183 – Bypass Check Valve
– These valves partially check the flow through the valve in one direction while allowing full flow in the other. – Can be used to prevent sudden drop in air assist drawbars. – Limit flow to devices where excess volume can be deterimental.
What is pilot operated valve?
Pilot operated check valves (PO Check Valves) are typically used to hold pressure in a cylinder in the event of a drop in pressure or a total loss of pressure. The pneumatic check valve locks air in the device until the pilot signal is energized, at which time the valve opens and air evacuates the cylinder.
Why are bypass valves provided with large gate valves?
As the gate is pushed against its guiding rail by the pressure of the medium, it becomes harder to operate the valve. Large gate valves are sometimes fitted with a bypass controlled by a smaller valve to be able to reduce the pressure before operating the gate valve itself.
What could cause the bypass valve in a full flow lubrication system to open?
The bypass valve – otherwise known as a pressure relief valve – is an integral part of the oil filter. The valve is designed to open when the oil filter becomes clogged or when the oil is too thick.
What is the difference between a bypass and a full flow filter?
A bypass filter is usually a much finer filter to capture smaller particles than the full flow. Because it has a higher efficiency, it will have a much lower flow rate than a full flow filter; especially when the oil is cold.
Can you drive without oil filter bypass valve?
Can You Drive Without Oil Filter Bypass Valve? This oil bypass valve can be removed or broken, so the vehicle can be driven with it. In spite of clogged oil filters, unfiltered oil is still able to flow to vital engine parts through the oil bypass valve. Without the bypass valve, you can reinstall the filter.
