The Rain Bird 3/4" Pressure Regulating Filter (PRF-075-RBY) is the ultimate space-saving, one-step solution for your residential or light commercial drip irrigation system. By combining a high-efficiency 200-mesh filter and a reliable 30 PSI pressure regulator into a single, compact unit, it drastically reduces the number of components needed in your head assembly. Engineered with standard 3/4" Male Pipe Threads (MPT), this combo unit integrates seamlessly into PVC manifolds and connects perfectly downstream of standard 3/4" irrigation valves or automated timers.
Constructed from heavy-duty, glass-filled polypropylene, the PRF-075-RBY is built to withstand harsh outdoor environments and incoming pressures up to 150 PSI. It is specifically designed for smaller setups, efficiently handling precise flow rates ranging from 0.2 to 5 Gallons Per Minute (12 to 300 GPH). By trapping fine debris while simultaneously dropping the water pressure to a safe 30 PSI, it ensures your sensitive drip tape, emitters, and micro-sprays operate flawlessly without blowing out. Please note: This unit must be installed after an automated timer or valve and is not rated to be left under constant pressure.
Detailed specifications for system planning.
| Specification | Details |
|---|---|
| Product Type | Filter & Pressure Regulator Combo Unit |
| Inlet / Outlet Size | 3/4" Male Pipe Thread (MPT / NPT) |
| Operating Pressure Range | 20 to 150 PSI Inlet Pressure |
| Regulated Output Pressure | 30 PSI |
| Flow Range | 0.2 to 5 Gallons Per Minute (12 to 300 GPH) |
| Screen Filtration | 200 Mesh (75 Micron) Pre-Assembled |
| Body Material | Glass-Filled Polypropylene |
| Constant Pressure Rated | No (Must be installed after valves or timers) |
| Brand | Rain Bird |
| MPN | PRF-075-RBY |
Build your drip irrigation head assembly safely and quickly.
Step 1: Prep the Threads
Because this unit utilizes Male Pipe Threads (MPT), you must apply 2 to 3 wraps of Teflon tape to both the inlet and outlet threads to ensure a watertight seal. Do not use liquid pipe dope.
Step 2: Attach to Your Valve
Thread the inlet of the Rain Bird PRF unit directly into the downstream side (outlet) of your automated 3/4" irrigation valve. Ensure the directional flow arrow on the body points downstream.
Step 3: Add a Tubing Adapter
Thread a 3/4" Female Pipe Thread (FPT) tubing adapter or PVC fitting onto the outlet of the PRF unit to easily transition into your poly mainline or drip tape header.
Step 4: Routine Cleaning
Periodically (once a month) turn off the water supply, unscrew the PRF canister cap, carefully slide the 200-mesh screen out, and rinse it under clean water to remove trapped sediment.
Can I leave this combo unit under constant pressure?
No, the Rain Bird PRF-075-RBY is not rated for constant pressure. It must be installed after your automated timer or irrigation valve so it only holds pressure when the system is actively watering.
Installing it before the valve leaves it pressurized 24/7, which can eventually cause the canister body to stretch, crack, or leak over time.
What does the 200-mesh screen do?
The 200-mesh screen is a very fine filter (equivalent to 75 microns) designed to trap tiny particles of dirt, sand, and rust. It provides superior protection, preventing even the smallest low-flow drip emitters and micro-sprays from clogging.
Regular cleaning of this screen ensures your system maintains its 0.2-5 GPM flow capacity.
Will this work if my water flow is less than 0.2 GPM?
For the pressure regulator inside the PRF-075-RBY to accurately step the pressure down to 30 PSI, the system requires a minimum flow of 0.2 Gallons Per Minute (12 GPH).
Because this minimum is extremely low, this unit is highly effective for very small drip zones, raised beds, or container gardens that do not pull much water.
How should I prepare my Rain Bird filter for winter?
Before the first freeze, ensure all water is drained from the system. We highly recommend unscrewing the canister cap, removing the screen, and storing the cap and screen indoors for the winter.
Leaving trapped water inside the rigid plastic canister during freezing temperatures will cause the housing to expand and permanently crack.
Please note the strict requirements for this combo unit:
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