Hudson Valve - The Water Control Solution   A damage-proof automatic control valve for fluid level control                   Features: No exterior moving parts Indestructible Installs in seconds No float ball or lever arm Resistant to freezing High-volume Anti-siphon 2 years warranty Item  Description  Price  Order  AF/HV1/2  Hudson Valve - 1/2" female thread  $34.50  AF/HV1  Hudson Valve - 1" female thread  $34.50