Rain Bird High Flow Inline Pressure Regulator - 1.5 in 40 psi

Rain Bird High Flow Inline Pressure Regulators deliver pre-set outlet pressure to protect drip and spray irrigation systems while supporting large-volume zones. Available in 1" and 1.5" female-threaded sizes with factory-set 40 psi (also available in 50 psi), these regulators keep downstream pressure steady for more consistent emitter and nozzle performance.

• High flow capacity: 1" models handle approximately 0.5–35 GPM; 1.5" models handle approximately 15–70 GPM, covering a wide range of landscape and commercial irrigation needs.
• Pre-set pressure regulation: Factory-set outlet pressure provides reliable 40 psi regulation (models also available in 50 psi) to protect drip lines and spray heads from excessive pressure.
• Durable construction: Molded high-strength ABS body with stainless-steel spring components for long service life in buried or above-grade installations.
• Threaded connections: Female NPT inlet and outlet (1" or 1.5" depending on model) for easy inline replacement with standard fittings.
• Operating limits: Typical inlet pressure range supports normal irrigation supply (manufacturer guidance: approximate inlet 15–150 psi / 1.0–10.3 bar) and water temperatures from near-freezing to warm (about 33°F to 110°F / 0.5°C to 52°C).
• Simple installation: Can be installed above or below grade; install with appropriate thread sealant and flush lines before connecting to avoid debris contact with the regulator seat.

Ideal for contractors and homeowners who need dependable, pre-set pressure control for high-flow zones, Rain Bird’s inline regulators simplify system design and protect emitters and spray devices. Match model size and preset pressure to your zone requirements; consult product specifications for exact flow charts and dimension details.