Simmons 4806 Frost Proof Bury Yard Hydrants (Not CA/VT Compliant) Forged construction , this item cannot ship to CA or VT Solid brass rod through brass packing nut will not rust and cut into rubber O-rings Solid brass links and connector Pump rod operated valve below frost line assuring free flow of water in freezing temperature One piece molded Buna "N" plunger can be easily adjusted or replaced without removing hydrant from ground, 6' bury depth