Rain Bird RD04SP45F 4-Inch SAM 45 PSI Spray Body

Rain Bird RD04SP45F 4-Inch SAM 45 PSI Spray Body

Brand: Rain Bird | SKU: RD04SP45F

Product Overview

Supply a suitable rotary nozzle from a 4-inch pop-up body with a 45 psi regulator, SAM check valve and Flow-Shield indication. Rain Bird RD04SP45F is the standard-cover model, so choose the separately identified non-potable version when purple identification is required. The nozzle is selected separately for the layout.

Key Features

• Triple-Blade Wiper Seal balances flushing and debris protection.
• Debris pockets help keep grit from recirculating inside the body.
• Reinforced ratchet ring supports nozzle-pattern alignment.
• Top-access internal components simplify service.
• Built-in 45 psi pressure regulator.
• SAM check valve helps prevent low-head drainage across elevation changes up to 14 feet.
• Flow-Shield produces a low-flow service-indication stream when a nozzle is missing or damaged.

Common Uses

• rotary-nozzle layouts requiring regulated pressure and drainage protection.
• Replacing a matching RD1800 body after checking pop-up height, features and inlet fit.

Technical Specifications

• Merchant SKU: RD04SP45F; manufacturer designation: RD04-S-P45-F.
• Pop-up body: RD1800 4-inch model; nozzle not included.
• Inlet: 1/2-inch female NPT; SAM model uses bottom inlet only.
• Current model-specific technical operating range: 25–100 psi.
• Regulator target: 45 psi; technical regulation range: 50–100 psi inlet. Adequate operating pressure and flow are required.
• SAM check-valve capability: up to 14 feet of elevation head.
• Flow-Shield option: included.
• Water-use identification: standard cover; not the purple-marked non-potable model.
• Watering arc, radius and flow are determined by the selected nozzle and operating conditions.

Dimensions

• Body height: 6 inches.
• Pop-up height: 4 inches.
• Exposed surface diameter: 2-1/4 inches.

Compatibility & Installation Notes

Check finished grade, the 6-inch body height and the 4-inch pop-up stroke. Connect through the bottom inlet; the SAM check valve relies on that bottom connection.

Measure operating pressure and confirm the supply supports the 45 psi nozzle target and combined zone demand. A regulator cannot boost inadequate supply pressure.

Choose a compatible Rain Bird nozzle and filter screen, flush before nozzling and align the pattern using the stem ratchet. Follow the selected nozzle’s own radius and arc instructions.

The SAM check valve limits drainage after shutdown; it does not close a leaking upstream control valve.

For flushing, the RD1800 Flow-Shield instructions call for removing internals at lateral or branch ends, flushing until clear, then reinstalling them. Install the appropriate nozzle filter screen for proper Flow-Shield operation. Its indication stream signals a service need; it is not a complete water shutoff.

Select the separate non-potable model when purple identification is required. Family videos and diagrams may show that alternate cover or other RD1800 options.

RD1800 Family Videos

Frequently Asked Questions

Does it include a nozzle?

No. Choose a compatible nozzle and the required screen separately for the desired arc, reach and flow.

Does this model include Flow-Shield?

Yes. It produces a low-flow indication stream when a nozzle is missing or damaged, helping identify a service need. It does not shut off all water.

Can I use a side inlet?

No. This SAM model requires its 1/2-inch female NPT bottom inlet.

Will its regulator increase low supply pressure?

No. The regulator reduces available pressure. The technical specification gives a 50–100 psi inlet range for the 45 psi regulation target; check pressure while the zone operates.

Why Buy from Big Frog Supply?

Choose RD04SP45F for a rotary-nozzle layout that needs a 45 psi target, SAM protection for 14 feet of elevation head and Flow-Shield indication when a nozzle is missing or damaged. Its standard cover distinguishes it from the non-potable version, while its 4-inch stroke and bottom-only connection establish installation fit. Use a 30 psi model when that is the chosen nozzle’s pressure target.