ESHIONG Straight RO(Reverse Osmosis) Water Filter One Way Check Valve, Plastic Push Fit Quick Connect RO Fittings?1/4"-Inch to 1/4"-Inch Tube OD for RO Water Filter Purifiers?(pack 6)

1?The products are made from Food-grade material which is safe, non-toxic and no odor,meet NSF Standards.They have been certified by several international authoritative testing institutions. 2?The new multi - contact design makes it more secure and reliable to connect with water tube.In destructive tests, our water purifier quick connectors performed perfectly. In the anti-fatigue and anti-pressure test, we used the continuous action of 12 kg and 35 kg pressure water hammer for 20,000 times respectively, and the products did not leak or burst.In the low-pressure test they also did not leak. 3?We have many years of experience in producing and selling water purifier fittings.We sincerely hope that our products will improve your life. 4?The cracking pressure of the check valve is 7.25 PSI.