Impact system Anti-splash u201CPJTMu201D arm Lift height of 7.6 cm Interchangeable bayonet-type nozzles color-coded 1 nozzle supplied (nu00B08 blue) Nozzle change without tools Double counterweight arm: slow rotation ensuring excellent reach Operates at low pressure and low flow A single full circle model and circle sector from 20u00B0 to 340u00B0 Jet breaker screw Wiper and sealing gasket Reversing lever allowing thesector watering Double threaded inlet: 1u20442u201D (1521) and 3u20444u201D (2027) Maintenance from above the device Optional anti-drain SAM valve kit Change in characteristics: Sprinklers intended for small and medium-sized residential and public automatic watering installations.v These devices are specially designed to operate at low pressure and in dirty water.