Commercial-Grade Pressure Regulation for Medium Flow Systems
The Senninger 1″ Medium Flow Pressure Regulator is an essential component for protecting mid-sized agricultural setups, commercial landscapes, and large residential drip zones. 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 versatile flow range between 2 and 20 Gallons Per Minute (GPM), they are perfectly designed for systems that fall right between standard residential and massive commercial flows. For ultimate protection, install this unit downstream of a 1″ irrigation filter and your automated irrigation valves.
To seamlessly integrate into standard PVC manifolds, these medium-flow models feature 1″ Female Pipe Threads (FPT) on both the inlet and outlet. They are available in three distinct, color-coded models to match your specific landscape needs. The PR1S12 drops incoming pressure down to a gentle 12 PSI, ideal for running thin-walled drip tape. The PR1S25 outputs 25 PSI, making it the industry standard for 1/2″ poly tubing and emitter systems. Finally, the PR1S40 model outputs 40 PSI, perfect for running micro-sprinklers and dynamic spray zones without blowing out your fittings.
- Versatile Flow Capacity: Safely and accurately regulates moderate-to-high water flows ranging from 2 to 20 Gallons Per Minute (120 to 1,200 GPH).
- Prevents System Blowouts: Drops harsh incoming pressures (up to 120 PSI depending on the model) down to strict, safe operating levels to protect your downstream tubing.
- Standard 1″ Threads: Features 1″ FPT connections on both sides, ensuring easy integration directly into standard 1″ PVC pipe manifolds and automated valves.
- Maintains Uniformity: Ensures that your drip emitters and micro-sprinklers operate at their exact specified flow rates without pressure-induced fluctuations.
- Commercial Durability: Built from high-impact engineering-grade thermoplastics to withstand intense agricultural and outdoor environments.
Detailed specifications for system planning.
| Specification | Details |
|---|---|
| Product Type | Medium Flow Pressure Regulator |
| Inlet / Outlet Size | 1″ Female Pipe Thread (FPT) |
| Required Flow Range | 2 to 20 Gallons Per Minute (120 to 1,200 GPH) |
| Body Material | High-Impact Thermoplastic |
| Constant Pressure Rated | No (Must be installed after valves or timers) |
| Brand | Senninger |
Senninger PR1S Model Chart
| Part | Regulated Output Pressure | Maximum Inlet Pressure | Flow Range |
|---|---|---|---|
| PR1S12 | 12 PSI | 90 PSI | 2 – 20 GPM |
| PR1S25 | 25 PSI | 105 PSI | 2 – 20 GPM |
| PR1S40 | 40 PSI | 120 PSI | 2 – 20 GPM |
Build your medium-flow 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 1″ 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 1″ Male Pipe Thread (MPT) fitting from your upstream valve or filter into the 1″ 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 1″ Male Pipe Thread (MPT) PVC fitting or tubing adapter into the 1″ FPT outlet of the regulator to transition safely into your irrigation mainline.
Step 4: Pressurize and Test
Turn on the irrigation valve. The internal diaphragm will instantly drop the pressure passing through the unit, safeguarding your downstream drip lines or micro-sprinklers.
