Flow (wastewater) restrictor 500/550 cc/min

This flow restrictor is installed on the waste (drain) line of a reverse osmosis system, where it carries reject water from the membrane to the drain. It is for RO setups built around a 100 GPD membrane, where the drain flow has to match the membrane rating. The restrictor connects to the system with quick-connect fittings.

Why it matters

• Rated at 500/550 cc/min, which is the drain flow the sizing guide assigns to a 100 GPD membrane.
• Sits on the membrane waste outlet, so it controls the reject stream leaving the membrane.
• Uses quick-connect fittings, so it can be fitted to the drain line without tools or permanent plumbing changes.
• The supplier provides a sizing table for 50, 75, 100 and 300 GPD membranes, so the correct restrictor can be checked before ordering.

Specifications

• Flow rate: 500/550 cc/min
• Membrane match: 100 GPD
• Connection: quick-connect fittings
• Weight: 0.01 kg

What it works with

The restrictor is designed for reverse osmosis systems used to produce purified water for aquarium and terrarium setups. Match it to the membrane size using the sizing table: 350 cc/min for 50 GPD, 420 cc/min for 75 GPD, 500/550 cc/min for 100 GPD and 1200 cc/min for 300 GPD. Other membrane sizes need a different restrictor from the same table.