On both I can blow into from both sides and air pass through, are both damaged?

Not a direct answer but one of the two I received failed after a few weeks; upon removal I was able to pass air thru both sides. I did not test the new one (should have), but it seems to be working fine.

vendor higher CC number means more resistance or less resistance?

Higher number means less flow resistance (higher waste water flow to the drain).

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TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2)

TmallTech 50GPD Flow Restrictor 300CC 1/4" Quick Connect for RO Reverse Osmosis (pack of 2)

4.6/5

Product ID: 216567052

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Details

Material
Acrylonitrile
Product dimensions
5.1D x 9.7W x
Item weight
0.01 Ounces
Product benefits
Improves of RO
Brand
DIGITEN

💧Precise 300CC flow control

🔗1/4" quick connect ease

⚙️ABS engineering plastic durability

Description

💧 Flow smarter, not harder — upgrade your RO game!

DURABLE ENGINEERING - Crafted from ABS plastic for long-lasting, corrosion-resistant performance
COMPACT LIGHTWEIGHT - Slim 9.7 x 5.11 x 2.01 cm size fits discreetly in any RO setup
PRECISION FLOW CONTROL - 300CC flow restrictor ensures optimal 50GPD water output ratio
EFFORTLESS INSTALLATION - 1/4" quick connect design for seamless RO system integration
OPTIMIZED WATER EFFICIENCY - Maintains a pure to waste water ratio of 1:3, reducing waste and saving costs

The TmallTech 50GPD Flow Restrictor is a precision-engineered ABS plastic component designed for reverse osmosis systems. Featuring a 1/4" quick connect fitting and a 300CC flow rate, it optimizes water purification by maintaining a pure to waste water ratio of 1:3, ensuring efficient and reliable 50 gallons per day output. Compact and durable, this pack of two flow restrictors is essential for any professional-grade RO setup.

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago