The RK0040 grey micro-sprinkler head delivers a consistent 40 LPH flow rate for drip and micro-irrigation systems on nurseries, orchards, and row crops. Fits 7mm slip stake connections; use the RKB7S7 adapter for 1/4" (4mm) micro-tubing.
We'll notify you when the requested quantity is back in stock.
Ships Same Day
All orders placed by 12 PM local warehouse time will ship the same day. Some exclusions apply. Delivery time may increase if item isn't available in closest warehouse.
The RK0040 is a 1mm fixed-nozzle micro-sprinkler head rated at 40 LPH, color-coded grey for quick flow identification in the field. Designed for 7mm slip stake connections, it integrates with standard micro-irrigation distribution systems used in orchards, nurseries, greenhouses, and row-crop drip layouts. The RKB7S7 adapter allows connection to 1/4" (4mm) micro-tubing when needed.
Key Features
Color-coded grey body — instantly identify the 40 LPH flow rate without removing the head
1mm precision nozzle — consistent distribution across the 42–58 LPH operating range
7mm slip connection — compatible with RKS40 and RKS30 stakes for flexible placement
Adapter-ready — RKB7S7 adapter (sold separately) enables use with standard 1/4" micro-tubing
Materials & Construction
Engineering-grade plastic body and nozzle. UV-stabilized for outdoor installation.