To Next PageTo Next Page
Need help?Do you have a question about the Nelson MR and is the answer not in the manual?
For accurate pressure regulation. Identified with a Gray Inlet.
A combination pressure regulator and check valve to prevent system drain down.
Lists four key applications for the MRDC in irrigation systems.
Both MR and MRDC regulate pressure when system pressure is adequate.
MR is open; MRDC is closed to draining during low pressure.
MR is open; MRDC is closed to draining after system shut off.
For accurate pressure regulation. Identified with a Gray Inlet.
A combination pressure regulator and check valve to prevent system drain down.
Lists four key applications for the MRDC in irrigation systems.
Both MR and MRDC regulate pressure when system pressure is adequate.
MR is open; MRDC is closed to draining during low pressure.
MR is open; MRDC is closed to draining after system shut off.
The Nelson Mini Regulator (MR) and Mini Regulator Drain Check (MRDC) are devices designed for precise pressure regulation and system management in irrigation applications.
Mini Regulator (MR): The MR is primarily designed for accurate pressure regulation. It ensures a consistent output pressure, which is crucial for maintaining the uniformity of sprinkler distribution patterns and optimizing water usage. The MR is identified by a gray inlet.
Mini Regulator Drain Check (MRDC): The MRDC is a patented combination device that integrates both a pressure regulator and a check valve. In addition to providing accurate pressure regulation, it features a check valve that prevents the irrigation system from draining down through the sprinkler when the system is shut off. This feature is particularly useful in preventing crop washout and maintaining system prime. The MRDC is identified by a blue inlet.
Normal Pressure: When the system operates at adequate pressure, both the MR and MRDC regulate the pressure to their specified output.
Low Pressure: If the inlet pressure drops below the regulation threshold, neither device will regulate. In this scenario, the MR remains open, allowing flow, while the MRDC's check valve closes to prevent draining.
Draining After Shut Off: When the system is shut off and pressure drops to zero, the MR remains open, allowing any water in the line to drain through the sprinkler. In contrast, the MRDC's check valve closes, preventing the system from draining down through the sprinkler, thereby maintaining the prime of the system.
Pressure Options (for both MR & MRDC):
Flow Range:
Inlet Connection:
Outlet Connection:
Maximum Inlet Pressure:
MRDC Applications:
General Usage Notes:
Checking System Pressure:
Freezing Conditions:
Inlet Plugging:
The Nelson Mini Regulator and Mini Regulator Drain Check are warranted for one year from the date of original sale. This warranty covers defects in materials and workmanship when the product is used within its specified working conditions and under normal use and service. The manufacturer's liability is limited to replacement or repair of defective parts. The warranty explicitly disclaims responsibility for installation, removal, or unauthorized repair, as well as any crop or other consequential damages. It is an express warranty in lieu of all other warranties, including implied warranties of merchantability and fitness for particular purposes. No agent, employee, or representative has the authority to alter or add to the warranty provisions. The Mini Regulator Drain Check is covered by U.S. Patents 5875815, 5257646, and other pending US and Foreign Patents.
General| Brand | Nelson |
|---|---|
| Model | MR |
| Category | Controller |
| Language | English |
