Built-in Seal-A-Matic (SAM) check valve. Eliminates the need for under-the-head check valves
Rain Bird 1800 - Pop-up Spray Heads - N°1 Selling Spray Head for 25 years! Co-molded wiper seal is molded into the cap and features an encased plastic “cage” to provide unmatched resistance to grit, pressure, and the environment. Additionally, the pressure-activated, multi-function seal design assures a positive seal without excess “flow-by” which enables more heads to be installed on the same valve.
Strong stainless steel spring provides reliable stem retraction. Two-piece ratchet mechanism on all models allows easy nozzle pattern alignment and provides added durability.