Flow (wastewater) restrictor 420 cc/min
Drain flow restrictor rated at 420 cc/min for reverse osmosis systems, sized for a 75 GPD membrane. It is…
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This flow restrictor is used in reverse osmosis (RO) systems on the drain line that carries reject water from the membrane to the waste. It is intended for aquarists and terrarists who run an RO unit and need the waste flow set to match their membrane.
Why it matters
- Fixed drain flow: the restrictor limits reject water to 420 cc/min, which sets the ratio of purified water to waste.
- Membrane matching: according to the supplier's sizing table, 420 cc/min corresponds to a 75 GPD membrane. Other membranes need other restrictor values (350 cc/min for 50 GPD, 500/550 cc/min for 100 GPD, 1200 cc/min for 300 GPD).
- Quick-connect installation: it attaches to the RO system with quick-connect fittings, so no tools or plumbing modifications are needed.
Specifications
- Flow rate: 420 cc/min
- Compatible membrane (per supplier table): 75 GPD
- Connection: quick-connect fittings
- Installation point: drain line from membrane to waste
- Symbol: RO ogranicznik scieku 420
- EAN: 5905280160671
- Weight: 0.01 kg
What it works with
It is designed for RO systems that use a 75 GPD membrane and a standard quick-connect drain line. Check the membrane rating before ordering, because a restrictor with a different flow value will change the waste ratio and may reduce system efficiency.
Technical specification
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Frequently asked questions
It is fitted on the drain line that carries the reject water from the membrane to the waste outlet, and it controls how much water flows through that line. It is used in reverse osmosis systems.
According to the supplier's sizing guide, 420 cc/min matches a 75 GPD membrane. For 50 GPD the guide lists 350 cc/min, for 100 GPD 500/550 cc/min, and for 300 GPD 1200 cc/min.
The supplier's table gives 500/550 cc/min for a 100 GPD membrane, so 420 cc/min is not the listed match. Check your membrane's rating before ordering.
The restrictor is attached using quick connectors (push-in fittings). No other connection details are given in the product data.
The product is listed under the brand "Other" and is sold with the symbol RO ogranicznik scieku 420 and EAN 5905280160671. Use the EAN or symbol to confirm the exact item when ordering.
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