Kokido Kafra Bypass Kit for Above Ground Pools Solar Water Heater | K833BX For connection of up to two Kafra Solar Heaters Allows bypass of solar heaters when not used 2 x 3-way Bypass Valve 2 x Dia. 38mm (1 1/2") x L3ft Flexible hose 2 x Dia. 38mm (1 1/2") x L 6ft Flexible hose