Safety check valve
It will be very dangerous if children’s hair was sucked by pump.
Air can pass through Safety check valve to pump immediately while suction is block by towel or hair,then there’s no negative pressure between obstruction & suction,towel or hair can move easily.
JnJ safety check valve are salt fog-proof , anti-UV & anti-corrosion.
JnJ safety check valve,make your spa safely.
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