building first RO

[sgariety]

I am building my first RO using a 4x40 canister. I have done a ton of reading and can't find anywhere as to what needle valves people are using to restrict flow.
here is what I have


goulds j5s shallow water pump
5 micron filter

marathon 3/4 motor
procon series 4, 330gph


i have searched hi and low for a more detailed parts list for my self with no luck. any help to finish this would be greatly appreciated. Always willing to listen and learn.
Thank you

[ronintank]

I used these and on the concentrate line i use the built in neddle valve.
https://www.amazon.com/BQLZR-0-1-1GPM-Flowmeter-Measurement-Adjustable/dp/B0719VMFTH/ref=sr_1_3?ie=UTF8&qid=1521815131&sr=8-3&keywords=BQLZR+17+x+3.2cm+LZM-15T
here is a stainless neddle valve for a recircurlate valve. https://www.amazon.com/HittecH-Needle-Female-Stainless-Control/dp/B074J58NHV/ref=sr_1_14?s=industrial&ie=UTF8&qid=1521815267&sr=1-14&keywords=needle+valve

[ronintank]

you might be under powered on the 330 procon with a 3/4 hp motor.

[ronintank]

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Hand cart tcs store 40 bucks
https://www.mapleexperts.com/supplie...inch-membranes 235 with shipping
https://www.amazon.com
RO Membrane Housing 304 SS Stainless Steel Pressure Vessel 4"x40" 96.49
https://www.ebay.com
ebay Shallow-Well-Jet-Pump-w-Pressure-Switch-3-4HP-14GPM-Stainless- Steel-115-230V feed pump 109.95
https://www.ebay.com
ebay Carbonator-Procon-Pump-Motor-3-4-hp-HZ-60-50-Volts-100-120-200-240 procon pump motor for direct drive 188.00
https://www.amazon.com
12 pack filters B01LXP6I1K 66.99
https://www.amazon.com
Pentek 150237 #10 Big Blue Filter Housing, 1" Female NPT Inlet/Outlet 25.77
https://www.amazon.com
Pentek 150296 SW-3 Wrench for #10 Big Blue Housings 4.70
https://www.amazon.com
Housing Bracket for Big blue 10" and 20" filter housings 9.10
https://www.amazon.com
BQLZR 17 x 3.2cm LZM-15T 0.2-2.0GPM 1-7 LPM Panel Type Flow Meter Flowmeter for Water Liquid Measurement With Adjustable Knob 27.01
https://www.amazon.com
BQLZR 17 x 3.2cm LZM-15T 0.1-1GPM/0.5-4LPM Panel Type Flow Meter Flowmeter for Water Liquid Measurement With Adjustable Knob 27.01

https://www.amazon.com
Winters PFQ Series Stainless Steel 304 Single Scale Liquid Filled Pressure Gauge with Brass Internals, 0-300 psi, 2-1/2" Dial Display, +/-1.5% Accuracy, 1/4" NPT Bottom Mount 16.52
https://www.amazon.com
2 required Winters PFQ Series Stainless Steel 304 Single Scale Liquid Filled Pressure Gauge with Brass Internals, 0-100 psi, 2-1/2" Dial Display, +/-1.5% Accuracy, 1/4" NPT Center Back Mount 27.25
https://www.amazon.com
Duda Energy HPpvc075-025ft 25' x 3/4" ID High Pressure Braided Clear Flexible PVC Tubing Heavy Duty UV Chemical Resistant Vinyl Hose Water Oil 35.87
https://www.amazon.com
Duda Energy HPpvc050-100ft 100' x 1/2" ID High Pressure Braided Clear Flexible PVC Tubing Heavy Duty UV Chemical Resistant Vinyl Hose Water Oil 53.41
https://www.amazon.com
HittecH Needle Valve Female Thread 304 Stainless Steel Flow Control Shut Off 915 PSI 1/2"/1/4"/1/8"/3/8" BSP FxF NPT (1/2'') 11.31

Procon V-Band Clamp - 1113 × 1 $2.00


Procon Bronze Coupler - 1143 × 1 $5.00


Series 4 Procon Pump - enter your model # × 1
1+240 gph 240 psi $130.00

Subtotal $137.00
Shipping $0.00
Total $137.00 USD


https://www.supplyhouse.com
this is where I ordered all my fittings got a great deal order was about 109 bucks free ship
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My results are my evap rate is 15 gph. i can set the ro to run just a little bit faster then this and with a by-pass loop will turn 1% sap into 6% . i have a 13 gallon feed pan that preheats the concentrate before running into my syrup pan.

[jake1]

I' tried a 330 procon with a 1 Hp motor. Had to switch to a 1.5hp. Only could run around 150 psi with the 1 Hp which worked fine for me at the time with two membranes in series, but if you want to make high concentrate I would recommend at least a 1.5 Hp motor. As for needle valves I've had good luck with just a basic brass needle valve from the hardware store.

[sgariety]

you might be under powered on the 330 procon with a 3/4 hp motor.


I think you are right. What size would you recommend? All I could find locally in a clamp on style was a 3/4hp.

[sgariety]

Also, I am only running one membrane right now. Thought we would get this mastered before adding more. That was the reason with the series 4 330gph pump. Appreciate all the help so far

[ronintank]

I think you are right. What size would you recommend? All I could find locally in a clamp on style was a 3/4hp.
For the 330 you will need a 1.5 hp and will be set for future expansion.

[jake1]

If you want bigger than 3/4 Hp you gotta go 56c bolt on with love joy couple instead of the clamp on

[sgariety]

So I am using the 3/4 motor right now but will upgrade it soon to a 1.5hp. My next question is tubing and hoses. What does everyone use? I was thinking I could just use pex but A, it is too stiff to work with easily and B, it is only rated for 160psi. I believe I want to run around 200psi coming out of the HP pump and through the membrane house through discharge.

[jake1]

I'm pretty sure you wont be able to hit 200psi with that motor. But maybe. As for tubing i used the clear PVC with braided nylon in it, rated to 250psi i believe. Its cheap and available. Then some stainless fittings with brass barb fittings to tubing hose clamped. I am happy with it and have had no trouble accept my end caps leak slightly so I switching to copper just on the top of the endcaps so I can use a coupler union and tighten if need be. As is i have a 90 coming out of the endcap so there's no way to tighten or it throws off the indexing. If I could do it over i may just sweat copper for the whole thing. I spent way too much on brass and stainless fittings. Also I. Looking for advice on a good thread sealant for endcaps. IV tried lots but can get one to stop weeping. Maybe the copper trick will help. Anyone used leaklock on endcaps with any luck?

[Clinkis]

I’ve found copper works well for plumbing. Relatively cheap and easy to design and build. Had no issues going to 300 psi. For thread sealer the best thing I’ve found is a little bit of pipe dope, a few wraps of Teflon tape and a little more pipe dope on top. I use that for all my threaded fittings now, copper, stainless and plastic. Have never had one leak.