Commercial-Grade Pressure Regulation for Hard-Plumbed Systems
The Senninger 3/4″ Low Flow Pressure Regulator is an absolute necessity for protecting residential landscapes, raised beds, and light agricultural setups. Manufactured by Senninger—a global leader in irrigation pressure control—these heavy-duty regulators are engineered to safely drop high, fluctuating municipal or pump pressures down to a stable, reliable output. Supporting a low flow range between 0.5 and 8 Gallons Per Minute (GPM), they are perfectly designed for standard drip zones that utilize low-volume emitters and micro-sprays. For ultimate protection, install this unit downstream of a 3/4″ irrigation filter and your automated irrigation valves.
To seamlessly integrate into PVC manifolds, these low-flow models feature standard 3/4″ Female Pipe Threads (FPT) on both the inlet and outlet. They are available in two distinct models to match your specific landscape needs. The PR12 drops incoming pressure (up to 90 PSI) down to a gentle 12 PSI, which is ideal for running thin-walled Drip Tape. The PR20 model drops incoming pressure (up to 100 PSI) down to 20 PSI, making it an excellent choice for 1/2″ poly tubing, standard punch-in drip emitters, and soaker lines.
- Low Flow Accuracy: Safely and accurately regulates low-volume water flows ranging from 0.5 to 8 Gallons Per Minute (30 to 480 GPH).
- Prevents System Blowouts: Drops harsh municipal or pump pressures down to a strict 12 PSI or 20 PSI, protecting your downstream drip lines and tape from rupturing.
- Standard Pipe Threads: Features 3/4″ FPT connections on both sides, ensuring easy integration directly into standard 3/4″ PVC pipe manifolds and hard-plumbed valves.
- Maintains Uniformity: Ensures that your drip emitters operate at their exact specified flow rates without pressure-induced fluctuations.
- Commercial Durability: Built from high-impact engineering-grade thermoplastics with an internal stainless steel spring to withstand intense outdoor environments.
Detailed specifications for system planning.
| Specification | Details |
|---|---|
| Product Type | Low Flow Pressure Regulator |
| Inlet / Outlet Size | 3/4″ Female Pipe Thread (FPT) |
| Required Flow Range | 0.5 to 8 Gallons Per Minute (30 to 480 GPH) |
| Body Material | High-Impact Thermoplastic |
| Constant Pressure Rated | No (Must be installed after valves or timers) |
| Brand | Senninger |
Senninger Low Flow Model Chart
| Part | Regulated Output Pressure | Maximum Inlet Pressure | Flow Range |
|---|---|---|---|
| PR12 | 12 PSI | 90 PSI | 0.5 – 8 GPM |
| PR20 | 20 PSI | 100 PSI | 0.5 – 8 GPM |
Build your pipe-threaded drip irrigation head assembly safely.
Step 1: Prep the Threads
Because this unit utilizes standard Pipe Threads, you must apply 3 to 4 wraps of Teflon tape to the 3/4″ male PVC fittings you will be threading into the regulator’s inlet and outlet. Do not use liquid pipe dope.
Step 2: Connect the Inlet
Thread a 3/4″ Male Pipe Thread (MPT) fitting from your upstream valve or filter into the 3/4″ FPT inlet of the Senninger regulator. Crucial: Look closely at the body and ensure the directional flow arrow points downstream toward your fields.
Step 3: Connect the Outlet
Thread a 3/4″ Male Pipe Thread (MPT) PVC fitting or tubing adapter into the 3/4″ FPT outlet of the regulator to transition safely into your poly mainline.
Step 4: Pressurize and Test
Turn on the irrigation valve. The internal diaphragm and spring will instantly drop the pressure passing through the unit, safeguarding your downstream drip lines.
