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1812 75 GPD Vontron Reverse Osmosis Membrane
Independently developed by VONTRON, the RO element ULP1812-50 is designed for the treatment of low-salinity water resources such as tap water, well water, etc. Working under extra-low pressure, it is applicable to water purifying devices in residence, hospital, and laboratory.
- Estimated Delivery : Up to 4 business days
Vontron 1812 75 GPD RO Membrane
The Vontron 1812 75 GPD RO Membrane is a high‑efficiency reverse osmosis element built for compact and residential systems. Featuring a 1.8″ diameter × 12″ length (1812 format), it delivers approximately 75 gallons per day (GPD)under standard conditions with a stable salt rejection of around 97%–98%. Lenntech+1
Designed for extra‑low pressure operation, this membrane is well‑suited to homes, offices, and light commercial setups where space is tight but performance is needed.
Key Features
- Compact 1.8″×12″ (1812) size fits smaller housings and tight installations.
- Typical output ~75 GPD (~280 litres/day) under test conditions.
- Stable salt rejection ~97.5% minimum at standard test conditions.
- Operating temperature up to 45 °C and SDI requirement ≤ 5.
- Ideal for low‑salinity feed water (tap or well) and residential RO systems.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1812‑75 |
| Format | 1.8″ diameter × 12″ length |
| Rated Permeate Flow | ~75 GPD (~281 L/day) |
| Stable Salt Rejection | ≥ ~97.5% |
| Min Salt Rejection | ~96% |
| Test Conditions | 60 psi (~0.41 MPa), 25 °C, 250 ppm NaCl, recovery 15% |
| Max Feed Pressure | ~200 psi (~2.0 MPa) |
| Max Feed Temperature | 45 °C |
| Max SDI | ≤ 5 |
| Feed Water pH Range (Normal) | 3–10 |
| Feed Water pH Range (Cleaning) | 2–11 |
Why Choose the Vontron 1812 75 GPD RO Membrane?
If you need an efficient, compact, and high‑quality RO membrane for residential use, the Vontron 1812 75 GPD stands out. Its ultra‑low pressure design helps keep pump and energy requirements down, while its solid salt rejection ensures excellent water quality. With its 1.8″×12″ size, it integrates easily into standard small‑format RO housings—making upgrades, replacements, or new installs both simple and effective.
Installation & Maintenance Tips
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Always pre‑treat feed water: ensure SDI ≤ 5 and free chlorine < 0.1 ppm.
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On initial use, flush the membrane as per Vontron guidelines; discard the first tank of permeate.
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Monitor permeate flow and rejection rate periodically—sharp drops may indicate fouling or damage.
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Clean and replace when needed; stay within temperature, pressure and pH limits.
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Store the membrane wet or in the recommended preservative if unused for long periods.
Return And Refund Policy
INSTORE EXCHANGES AND REFUNDS
For your convenience, item(s) purchased online may be exchanged or refunded at any Puritech store within South Africa, provided all online return policy conditions are met. A refund will be provided to you by crediting your original method of payment. Please note that cash refunds will not be provided under any circumstances and courier charges cannot be refunded.
Item(s) purchased at any Of Our store within South Africa can only be returned at a Puritech store within South Africa.
Puritech Online Returns Policy
There may be times when you will need to return an item purchased from us. Our Returns Policy is designed to assist you with your return. The benefits given by our Returns Policy are in addition to other rights and remedies you may have as a consumer under the Consumer Protection Act (CPA), as well as any other applicable acts.
If you wish to return any item(s) you have purchased, you can either return the item(s) via courier to our online store or in-person to a Puritech store within South Africa (only) within 14 days from the date of purchase…
We encourage you to return your parcel via Fast Way, Courier Guy, FedEx, or ParcelIt traceable courier services as all returned parcels remain the responsibility of the purchaser until received by Puritech.
Store purchases cannot be returned or refunded online.
Returns Policy Conditions
At Puritech we want to ensure you love the items you purchase. If you have changed your mind on a purchase we will exchange your item or refund your original method of payment provided that:
- You return the item within 14 days (inclusive) from the date of purchase.
- You produce your original Puritech invoice (receipt) when you return the item
- The item is in original saleable condition:
- With all original tags still attached
- In an unopened and unused state
- A return form is completed and accompanies your item(s) being returned
- In original packaging
If you are not able to comply with these requirements, Puritech reserves the right to refuse an exchange or refund on change of mind items. Puritech will not accept a bank statement as proof of purchase.
We regret that we are unable to accept the exchange or return of the following items for change of mind for hygiene reasons:
- Open Filters
- Open Membranes
- Used Reverse Osmosis Systems
Online Exchanges and Refunds
Online Exchanges
If you would like to exchange an item(s) for an alternative item(s), please complete the online Return Request form that is located within My Account under ‘My Orders’ prior to sending the item(s) back.
Exchanges can only be exchanged for the same value of the purchase price of the item being returned.
Your item (s) that you wish to return needs to be sent back to our online returns address with the relevant return documents, duly completed, and a tax invoice (receipt).
If the alternative item is no longer available, provided all the Returns Policy Conditions are met, a refund will be provided to you crediting your original method of payment. All return courier costs will be for your own expense and this will be deducted from your refund amount.
Online Refunds
To obtain a refund please fill out the online Return Request (RMA) form that is located within My Account under ‘My Orders’ prior to sending the item(s) back.
A refund will be provided to you crediting your original method of payment, providing all the Returns Policy Conditions are met and our warehouse has received the original item that is being returned. Cash refunds will not be provided under any circumstances.
COMPLETING A RETURNS REQUEST FORM ONLINE
- Log into your Puritech “My Account” and go to “My Orders”.
- Click on the order that contains the item(s) that you wish to return or request an exchange for and click on the returns button.
- After you have submitted your return request, one of our friendly staff members will get in contact with you to organize a collection.
- Once you have sent your item(s) back to our warehouse, our warehouse will authorize the refund.
Before sending, please ensure all details on this form are correct. You will also need to write the returns number on the outside of the parcel. You will be notified by email of the status of your exchange or refund.
Canature FRP Vessel 1354 2.5" 
LP/ULP22-8040 Vontron Industrial RO Membrane 
