Rain Bird PRS-DIAL pressure regulator for solenoid valves

Rain Bird PRS-DIAL pressure regulator for irrigation valves

The Rain Bird PRS-DIAL pressure regulating module allows you to adjust and maintain the outlet pressure of compatible Rain Bird irrigation valves. It is designed for automatic irrigation systems where consistent water pressure is important for the performance of sprinklers and other irrigation components. The clearly visible adjustment scale makes it easy to set the desired pressure for individual irrigation zones.

The PRS-DIAL mounts directly onto a compatible valve and can also be retrofitted to existing installations. This allows you to regulate pressure at the valve without installing a separate inline pressure regulator. It is particularly useful in irrigation systems where inlet pressure varies during operation.

Adjustable outlet pressure from 1.04 to 6.9 bar

The Rain Bird PRS-DIAL regulates outlet pressure between 1.04 and 6.9 bar. Its pressure regulating mechanism compensates for fluctuations in inlet pressure and helps maintain the selected outlet pressure within the specified operating limits. This supports more consistent sprinkler performance and water distribution across the irrigation zone.

Proper operation requires inlet pressure to be at least 1.04 bar higher than the desired outlet pressure. For example, an outlet setting of 3 bar requires a minimum inlet pressure of approximately 4.04 bar. If inlet pressure exceeds 6.9 bar, additional upstream pressure regulation is required. The recommended flow range of the connected valve must also be observed.

Compatible with Rain Bird PGA, PEB and other valve series

The Rain Bird PRS-DIAL is compatible with Rain Bird PGA, PEB, PESB, PESB-R, EFB-CP and BPES irrigation valve series. It can be used in residential irrigation systems, larger landscaped areas and professional irrigation installations. Before ordering, check the model and series of your existing irrigation valve to confirm compatibility.

The module is manufactured from corrosion-resistant, glass-filled nylon for reliable outdoor performance. Its waterproof adjustment cartridge helps prevent fogging and binding, while a protective cover reduces the risk of unintended adjustment. An integrated Schrader valve connection allows a separately purchased pressure gauge to be connected for pressure measurements.

Easy installation and precise pressure adjustment

The PRS-DIAL is installed directly beneath the solenoid and adapter of a compatible Rain Bird valve. This makes it possible to retrofit pressure regulation without adding a separate regulator to the main irrigation pipe. Before installation, shut off the water supply, release any remaining pressure and follow the manufacturer's installation instructions.

Once installed, the desired outlet pressure can be selected using the visible adjustment scale. For accurate verification, measure the actual outlet pressure with a suitable pressure gauge connected to the designated port. The regulating module also helps reduce pressure spikes, which can lower the risk of water hammer and unnecessary stress on irrigation components.

Technical specifications and dimensions

• Manufacturer: Rain Bird
• Model: PRS-DIAL / PRS-D
• Product type: Retrofit pressure regulating module
• Adjustable outlet pressure: 1.04 to 6.9 bar
• Maximum inlet pressure for accurate regulation: 6.9 bar
• Required pressure differential: At least 1.04 bar between inlet and outlet
• Maximum operating temperature: 66°C
• Material: Corrosion-resistant glass-filled nylon
• Pressure adjustment: Visible adjustment scale
• Pressure gauge connection: Schrader valve
• Installation position: Beneath the valve solenoid and adapter
• Compatible valve series: Rain Bird PGA, PEB, PESB, PESB-R, EFB-CP and BPES
• Function: Outlet pressure regulation at the irrigation valve
• Included: Pressure regulating module only, without irrigation valve or pressure gauge

Frequently asked questions

Which Rain Bird valves are compatible with the PRS-DIAL?

The PRS-DIAL is compatible with Rain Bird PGA, PEB, PESB, PESB-R, EFB-CP and BPES irrigation valve series. Compatibility with other models should be verified before purchase.

What pressure range can I adjust?

The outlet pressure can be adjusted between 1.04 and 6.9 bar, provided that inlet pressure and flow conditions meet the manufacturer's requirements.

What inlet pressure is required?

Inlet pressure must be at least 1.04 bar higher than the desired outlet pressure. To maintain 3 bar at the outlet, approximately 4.04 bar or more is required at the inlet.

Can I retrofit the PRS-DIAL to an existing valve?

Yes. The module is designed for field installation on compatible Rain Bird irrigation valves and mounts beneath the solenoid and adapter.

Is the PRS-DIAL compatible with Rain Bird HV and DV valves?

Rain Bird does not list the HV or DV series among the officially supported valve families. A different pressure regulation solution should be selected for these valves.

Is a pressure gauge included?

No. The module has a Schrader connection for a suitable pressure gauge, which must be purchased separately.

Can the PRS-DIAL increase water pressure?

No. The PRS-DIAL regulates and reduces existing water pressure. It cannot increase the available inlet pressure.