Maintaining a lush, thriving garden or farm requires more than just planting seeds and hoping for the best. Efficient irrigation plays a pivotal role in achieving healthy growth and maximum yields. 

Irrigation control valves are available for either regulating water flow or pressure within the irrigation system. This guide aims to equip you with the knowledge and skills needed for the successful DIY installation and maintenance of pressure control valves in irrigation systems.

Understanding Pressure Control Valves

Pressure control valves are integral to maintaining optimal water pressure within an irrigation system. They ensure that water is distributed evenly and consistently to different areas of the garden or field. 

Without proper pressure regulation, plants can be overwatered or underwatered, leading to stunted growth and reduced yields.

Pressure control valves come in various types, including:

  • Pressure Relief Valves: These valves release excess pressure from the system, preventing damage to pipes, fittings, and emitters.
  • Pressure Reducing Valves: Also known as PRVs, these valves decrease increased water pressure from the main supply to a manageable level, preventing equipment damage and water wastage.
  • Pressure Sustaining Valves: These valves maintain a minimum pressure in parts of the irrigation system that require higher pressure, ensuring uniform water distribution.
  • Pressure Regulating Valves: PRVs maintain a consistent pressure downstream, compensating for variations in the main water supply.

DIY Installation of Pressure Control Valves

Step 1: Gather Your Tools and Materials

Before starting with the installation process, you need to ensure that all the needed tools and materials are with you -

  • Pressure control valve(s) of the appropriate type
  • Pipe cutter or hacksaw
  • PVC pipes and fittings
  • Teflon tape or PVC glue
  • Adjustable wrench
  • Pipe thread sealant
  • Measuring tape
  • Marker

Step 2: Choose the Right Location

Select a suitable location for installing the pressure control valve. It should be easily accessible and close to the main water supply line. Ensure the area is level and free from debris that could interfere with valve operation.

Step 3: Turn Off the Water Supply

You cannot do any installation work if the water network is still running. Hence, before making any connections, turn off the main water supply to the irrigation system. This prevents water from flowing while you're working.

Step 4: Cut and Prepare the Pipe

Measure and mark the section of the main water supply line where you intend to install the pressure control valve. Using a pipe cutter or hacksaw you need to make clean cuts on both ends of the marked section.

Step 5: Install the Valve

Follow these standard steps to install the pressure control valve - 

  • Apply pipe thread sealant to the male threads of the valve.
  • Attach the valve to the cut section of the pipe, ensuring a snug fit.
  • Use an adjustable wrench to tighten the valve in place.
  • Connect the outlet end of the valve to the downstream irrigation line using appropriate PVC fittings.

Step 6: Test for Leaks

Once the valve is securely installed, turn on the water supply and check for any leaks around the valve and connections. If you notice leaks, tighten the connections or reapply sealant as needed.

Maintenance of Pressure Control Valves

Regular Inspection

Inspect your pressure control valves at least once a month during the irrigation season. Look for signs of wear, corrosion, or damage. Address any issues promptly to prevent more significant problems.

Cleaning

Sediments and debris from the water supply can accumulate in the valve, affecting its performance. Periodically, disassemble the valve and clean its components. Use clean water or a mild detergent solution for cleaning.

Pressure Adjustment

Over time, the pressure control valve's settings might need adjustment due to changes in the main water supply or system requirements. Consult the manufacturer's guidelines to learn how to adjust the valve's pressure settings correctly.

Conclusion

Mastering the art of irrigation involves understanding the role of pressure control valves and their installation and maintenance. By following this comprehensive guide, you'll be well-equipped to enhance the efficiency of your irrigation system, promote healthy plant growth, and achieve bountiful yields. 

If you are starting your irrigation project then be sure to choose a high-quality irrigation control valve. We at Dutco Tennant LLC supply best-in-class valves including pressure control valves.