Thanks all for your responses. I have determined that a valve control system very similar to the standard pump control valve that bimr posted, is what we will likely do. We are using a ball valve because it's important that we be able to control the opening and closing speeds whereas a check...
Pump Control Valve for a high service pump (pumping into distribution system).
It's a ball valve, similar to attached sketch.
Client has requested that the actuator operate using system pressure.
There will be no check valve and no pressure switch talking to the control valve.
I have...
Illustration which is more representative of the situation I’m dealing with. It will be a hydraulically actuated ball valve. I think I’ve determined that the pressure doesn’t need to be greater than system pressure because I’m not actually pushing against system pressure, just turning the...
I initially posted a question in the water treatment forum but it probably should be in the pump forum. I didn’t see how to move the post, posting link here.
Thanks in advance.
Link
It looks like in this manual there is only one water inlet into the actuator. Is there then a power unit somewhere to generate a pressure higher than that provided from the water system? That is, I’m going to need to shut the valve against system pressure, therefore I would need a pressure...
Can anyone point me to a general schematic of how this functions? I don’t necessarily need the actuators inner workings. I’m more interested in the connections to the system header. My specific situation is the application of a Pump control valve on a high service Pump. Thus I have...
Thanks all for the responses.
DanW, I had seen the commentary you pointed me to during the course of my initial search, and it looks promising for IA.
djs, I'm also in the southeast USA. Can you point me to anything that would support your statement that WW has been losing market share...
Hello,
I'm looking for any third party comparisons (white papers, etc.) that might have been done for comparing Wonderware's System Platform to Inductive Automation's Ignition. The use case will be for large water and wastewater plant monitoring & control. Any guidance would be appreciated.
Thanks bimr, that's essentially what we've done. They understand that if the design flows are realized, a separate force main will be necessary. At this time we are only doing a force main considering half of the design flow. I'm more interested in things that I might consider with respect to...
I am designing a wastewater conveyance system with a future service area. The proposed system consists of several miles of force main and three pump stations, with zero flow today. Design ADF is about 300,000 GPD, with the largest pump station in the range of 500 GPM. Obviously the system...
Hello All,
The Maryland Department of Environment (MDE) specifies peaking factors as a function of design capacities:
Specifically,
Hourly PF = (3.2 * Design Capacity ^ (5/6))/Design Capacity
I can't seem to locate a source or explanation for this (beyond the MDE manual). That is, typically I...
We're having a small debate in our office about how much field work should be done in developing and calibrating a water model. That is, once the system is sufficiently mapped, what percentage of hydrants should be flowed in order to establish flow conditions. Or perhaps you look for a certain...
Good Afternoon,
My firm is going through a process to scan and toss paper files. I know there is plenty of debate surrounding this topic, however, I'd really like to focus on the question at hand versus the debate of whether or not this is a prudent practice.
We have a lot of drawings that...
Good Afternoon,
My firm is going through a process to scan and toss paper files. I know there is plenty of debate surrounding this topic, however, I'd really like to focus on the question at hand versus the debate of whether or not this is a prudent practice.
We have a lot of drawings that...
