By-pass Valves

2200683	By-pass valve–inflexible tube 6 x 8
2200045	By-pass valve–inflexible tube 8 x 10
2200097	By-pass valve–inflexible tube 10 x 12
2202022	By-pass valve–inflexible tube 13 x 15
2200015	By-pass valve–inflexible tube 15 x 18