K-Rain PRO-S 40 PSI Pressure Regulated Spray Head 4 in. | 78004-PR40

Product Overview

Fluctuating site pressure is a leading cause of system inefficiency, misting, and uneven coverage that results in unsightly brown blocks and dissatisfied clients. When peak season heat hits, a failed spray head or a system running at excessive pressure leads to rapid turf stress and significant water waste. With supply chain volatility affecting specialized components, waiting until mid summer to secure pressure regulated heads often results in project delays or settling for non regulated alternatives that fail inspections. Securing your inventory of K-Rain PRO-S series heads now ensures your crew maintains momentum through the spring rush and keeps your installations compliant with evolving local water codes.

The PRO-S 40 PSI Pressure Regulated Spray Head offers a distinct advantage over standard pop ups by maintaining a constant nozzle pressure regardless of spikes in the main line. This regulation eliminates wind drift caused by misting and ensures that high efficiency nozzles operate exactly at their design parameters. By choosing this factory set regulated model, you reduce the time your technicians spend troubleshooting coverage issues and eliminate the need for secondary regulators. Investing in professional grade regulation protects your reputation for high quality, water efficient landscapes while reducing long term maintenance callbacks.

Product Specifications

Available Models & Sizes

The PRO-S Pressure Regulated series is available in 4 inch, 6 inch, and 12 inch pop up heights to accommodate various landscape elevations and plant requirements. Please contact our sales team for bulk pallet pricing or to discuss custom configurations for large scale municipal projects.

Key Features

• Factory installed pressure regulator maintains a consistent 40 PSI to prevent misting and water loss.
• Co-molded pressure activated wiper seal prevents leaks and protects internal components from debris.
• Heavy duty stainless steel retraction spring ensures positive pop down in all soil types.
• Pre-installed flush plug simplifies system startup and allows for easy nozzle installation.
• Compatible with all standard female threaded nozzles including fixed, adjustable, and rotary types.
• Tapered body design offers a slim profile that fits easily into existing 4 inch spray head footprints.

Common Applications

• Commercial landscape irrigation
• Residential lawn and garden systems
• Municipal parks and public spaces
• Sports turf and golf course maintenance
• Greenhouse and nursery operations
• Potable water supply systems

Installation Notes

Install the spray head onto a standard 1/2 inch swing pipe assembly or threaded riser. Ensure the head is installed flush with the finished grade to prevent damage from mowing equipment. When installing nozzles, remove the flush plug only after the lateral lines have been cleared of debris. For sites with high debris levels, consider using a swing joint to allow for easy height adjustment and protection against heavy foot traffic.