So I learned something new today. In talking to Chemline, I picked up on the rep’s accidental wording and learned that Chemline doesn’t manufacture the valves, they are a distributor of sorts for another company that actually makes the valves, and Chemline rebrands them.
I looked into the manufacture and found more detailed info on the metering valves, but also learned some more potentially helpful info. They also have a linear proportional ball valve. It has 90 degree of adjustment, scaled, but has MUCH higher flow rates. I don’t know the actual conversions for these factors, but I’ve uploaded a screenshot. DN20 = 3/4" and DN25 = 1", so take a look. with a DN20 v-groove ball (metering ball) you get a flow rate of ~2000 units. With a DN20 proportional ball (opens 90 degrees, has linear curve), you get ~10,000 units of flow rate. It’s basically 5x the flow, and that’s in a 3/4" valve. It looks like a 1/2" proportional ball is going to have around 7,000 units of flow, and the 1" is going to have around 15,000 units of flow. So this could allow valves to go down to 3/4" in size and drastically increase potential flow volume and eliminate restrictions and wear on diaphragm pumps.
It’s possible that this could be sold with the scale and ball alone as a retrofit, as the valves are able to be disassembled and put back together. I’m going to be inquiring about pricing options. Plastomatic has a similar product but it is astronomically priced and eliminates itself from being a realistic option.
Also, if I can go directly through the manufacturer, I might be able to get pricing down further, but I’m not certain about any of these things. It was a surprise to me to come across this and I am very excited about the possibilities here. This would take nearly all the strain off the pumps.
*Edit: After looking more closely, I think “flow units” are actually LITERS PER HOUR.