Hot Tub Replacement Part Watkins Tubing Kit, Freshwater III Ozonator-1/4" Tygon/Kynar With Check Valve HTCP1044101-72228-BYP OEM. This 1/4" Kynar/Tygon ozone-resistant tubing kit comes standard with the Freshwater III Ozonators. It is the replacement for all Freshwater 3 ozonators. It includes an attached 1/4" ozone-resistant check valve. This assembly is approx. Six feet in length. HTCP1044101-72228-BYP / HTCP1044101-72228-BYP-1

• This is for a Single Watkins Tubing Kit, Freshwater III Ozonator-1/4" Tygon/Kynar with Check Valve 
• OEM Replacement 
• Note: There is a small embossed arrow on the check valve which indicates the direction of the flow of ozone from the ozone unit towards the ozone injector