Pressure regulator Definition and 21 Threads

Hi Whoever, I have an idea for a system which would work for my food business but it doesn't exist. The system essentially relies on hydraulics, pressure relief valves and check valves for recirculation upon reached pressure. All tanks/pipes (The entire system) will be prefilled except for 1...

Hello all, I'm having trouble figuring out the volumetric flow rate upstream of a relieving pressure regulator used on a 1/4" OD nitrogen line. Upstream of the regulator P=100 PSIG and T=70F, while downstream P=80 PSIG and T=70F with downstream consumption at q=4 L/min or 0.91 SCFM (at std...

Hello, I want to develop a pressure regulator model in simscape. The model will be the springloaded direct acting system and the aim is to target outlet pressure, temperature and flow rate by giving input parameters as pressure, temperature, spring stiffness, length and preload, lever(it is...

I need a help with 1D simulation of a CNG pressure regulator. I have to model this valve in a software called GT power/GT suite. The model has a inlet, ball poppet, piston with spring, outlet and a pipe for balancing the valve. Maybe someone who has experience about modeling this kind of...

Hey, I have an air tank that is at a set pressure, say 3000psi, and I have attached a regulator to the end that regulates the pressure down to 800psi. As the valve on the tank is opened the pressure and the mass in the container will decrease. If there was no regulator the mass flow rate would...

When designing the fuel plumbing for an efi system, do pressure drops in the fuel lines need to be considered when there is a pressure regulator? If so why? Been reading up a lot on plumbing design lately about how the goal is to minimize restrictions in the lines which ultimately cause...

Hi folks, Firstly a little background, I work for a company that manufactures gas pressure regulators. Last year I was a machinist studying for my HNC in manufacturing engineering. Since passing work has given me the opportunity to work in the product engineering office as a product tester and...

I am scratching my head on this question. PRV is supposed to create a closed system requiring a thermal expansion tank. But at the same time PRV is not considered a backflow preventer. How can both be true?

Is it possible to have choked flow in a 1/4" diameter pressure regulator with pressure difference of 3.5bar?

I have a pressure regulator that has working the range of outlet pressure 0 to 2 bar, inlet pressure 5 bar, flow rate of 600lit/min and the regulator has 1/4" outlet port (6.35mm). whole data is according to manual I have not tested the regulator. But for flow rate of 600lit/min the velocity...

Is flow rate at inlet of pressure regulator ( not relief valve) equal to flow rate at outlet ?

I see that pressure regulator curves show different flow rates, but I am confused by this because I was under the impression that the flow rate would be an "output" of the force/pressure balance across the pressure regulator. For example, assuming the inlet to a regulator is 500 kPa, and the...

Hi all, I need a model of a pneumatic pressure regulator. The model should be as simplest as possible and use an optimization solver to identify the regulator parameters in order to fit the performance I find in the datasheet of a commercial pressure regulator. I have already done a model...

I have a self-venting single-stage pressure-reducing regulator that takes ~2500 psig and steps it down to ~1500 psig (here is a link with the specific details of the hardware if interested: http://www.items.se/Dokument/44-1300_10061107.PDF). I experienced some odd behavior recently where the...

Hi, I wanted to know if pressure regulators connected to gas cylinders provide constant outlet pressure, or provide constant pressure drop. Example of the regulator that might be used is this. http://secure.emiratesgas.com/eCom/details.asp?ProductID=ART01661_PR For instance, I have a...

Good day to all, was wondering how a pressure regulator doownstream will affect the flow rate of compressed air through a pipe. Anyone has any insights on this? the pressure regulator is to reduce the downstream pressure but I'm really confused how the flow will be affected. For instance, will...

I wanted to know the function of a pressure regulator.. Am using one to control liquid flow rate. Here is my understanding- A pressure regulator can be connected across a valve. The pressure regulator maintains a constant "pressure drop" across the valve so if i set it to give a drop...

Hi all, I am trying to determine what approach to use to solve the following scenario: I have a pressure vessel with pressure P1 and volume V1. I have another vessel of pressure P2 and volume V2. Vessel #1 is supposed to be a high-pressure storage vessel and vessel #2 is supposed to be...

I am currently working on a project involving a diesel/lime slurry. Problem I am having is that the line that the slurry is coming off of is about 100 psi and it needs to be regulated to about 40 psi. The pressure regulators I have been looking at are not ideal because of the small spaces within...

I have recently been experimenting with pressure to generate a mass flow and discovered something really bewildering. First let me explain the procedure. I use large stainless steel tanks filled to about 3/4 with water so there is a large enough capacity. I then pressurize the system with...

So far I've seen that a pressure regulator regulates the pressure from upstream to required pressure downstream and that a flow regulator regulates the flowrate, obviously. But, theoretically, doesn't one regulate the pressure to induce a specific flowrate? what is the actual difference...