Rain Bird PVC valve fitting 1330-131 - reducing coupling - 1-inch F to ¾-inch F

Reducing coupling for Rain Bird valve manifolds

The Rain Bird RB1330-131 is a compact PVC reducing coupling for the modular Rain Bird valve manifold system. With a 1-inch female thread and a ¾-inch female thread, it provides a simple transition between two different connection sizes within your irrigation system.

The coupling belongs to the Rain Bird RB1300 Series and is suitable for building, extending and adapting valve assemblies. It is particularly useful when a 1-inch connection needs to be reduced to a component with a ¾-inch male thread.

Reduce from 1-inch to ¾-inch female thread

The RB1330-131 features a 1-inch female thread on one side and a ¾-inch female thread on the other. This allows components with compatible male threads to be connected directly while reducing the connection size from 1 inch to ¾ inch.

Its compact design requires very little installation space, making the coupling particularly suitable for valve assemblies and other irrigation components installed inside a valve box.

For modular valve assemblies

The RB1330-131 is part of the modular Rain Bird PVC manifold system. Together with manifolds, tees, crosses, elbows, end caps and other adapters, it allows you to configure a valve assembly to suit your irrigation valves and pipe connections.

The Rain Bird system is designed for easy installation and maintenance. Its telescoping manifold design allows valves with different installation lengths to be replaced without cutting the pipework or adding additional components.

Durable PVC coupling for irrigation systems

The reducing coupling is made from grey PVC and is designed for permanent use in irrigation systems. Rain Bird specifies a maximum operating pressure of 10.5 bar for the PVC manifold system.

By reducing the connection to ¾ inch, the RB1330-131 makes it easy to adapt the manifold system to components with smaller threaded connections. This makes it suitable for both new valve assemblies and modifications to existing irrigation systems.

Technical data and dimensions

• Manufacturer: Rain Bird
• Series: RB1300
• Model: RB1330-131
• Product type: Reducing coupling / union coupling
• Material: PVC
• Colour: Grey
• Connection 1: 1-inch female thread
• Connection 2: ¾-inch female thread
• Reduction: 1-inch female to ¾-inch female
• Maximum operating pressure of Rain Bird manifold system: 10.5 bar
• Suitable for modular valve assemblies
• Compatible with the Rain Bird PVC manifold system

Frequently asked questions about the Rain Bird RB1330-131

Which connections does the RB1330-131 have?

The reducing coupling has a 1-inch female thread on one side and a ¾-inch female thread on the other. Both connections are therefore designed for components with compatible male threads.

What is the RB1330-131 used for?

The coupling is used when a connection within an irrigation system needs to be reduced from 1 inch to ¾ inch.

Can I connect a ¾-inch male thread?

Yes. The ¾-inch side has a female thread and can therefore be connected to a compatible component with a ¾-inch male thread.

What is the difference between the RB1330-131 and RB1330-010?

The RB1330-010 has 1-inch female threads on both sides. The RB1330-131 reduces from a 1-inch female thread to a ¾-inch female thread.

Is the RB1330-131 suitable for valve boxes?

Yes. Its compact design makes it particularly suitable for valve assemblies installed inside valve boxes where different connection sizes need to be adapted.

What is the maximum operating pressure?

Rain Bird specifies a maximum operating pressure of 10.5 bar for the PVC manifold system.