Prier Anti-Siphon Wall Hydrant - Gray Handle - 3/4" Wirsbo - 493 Size:4 Inches The rotor's small exposed surface

The rotor's small exposed surface area

Adjustable vent ring allows for setting of reset delay

a lightweight plastic disc float

easy to adjust two-piece ratchet

Depth:  2

Prier Anti-Siphon Wall Hydrant - Gray Handle - 3/4" Wirsbo - 493 Size:4 Inches The rotor's small exposed surfaceThe 493 Series Anti Siphon Wall Hydrant was added to PRIER's offering with our 2007 purchase of Mansfields Brass Division. The 493 Series, also available in Lead Free, is similar to Mansfields original patented vacuum breaker design, now manufactured by PRIER in our Kansas City area plant. The 493 Series provides year round water to areas of structures that are prone to freezing, with the added protection of an anti siphon device and backflow