Flow Switch RJSPHH 12 GPM Pilot for General Pump 3/8 inch NPT 4000 PSI

Description

Product Overview

The RJSPHH Flow Switch with Pilot Feature is engineered to deliver accurate flow monitoring and control for a wide range of industrial pump applications. Rated for a maximum flow of 12 gallons per minute, the device activates at a minimum flow of 0.5 GPM under 50 PSI, ensuring early detection of low‑flow conditions. Constructed from high‑grade materials, the switch withstands up to 4000 PSI of operating pressure, making it suitable for high‑stress environments. The inlet and outlet are both 3/8 inch NPT‑F threaded, providing a secure, leak‑free connection to standard hydraulic and pneumatic lines. A dedicated 1/4 inch pilot hose barb allows for easy integration with pilot‑controlled pump systems, delivering reliable shut‑off when flow drops below the set threshold. Compact dimensions of 3.15 x 0.98 x 4.33 inches and a lightweight design (1.32 pounds) facilitate installation in confined spaces without sacrificing durability.

Usage

This flow switch is ideal for general pump systems used in manufacturing, water treatment, chemical processing, and HVAC applications. It excels in scenarios where precise flow regulation is critical, such as cooling‑tower recirculation loops, lubrication circuits, and fluid transfer stations. The pilot feature enables automatic shutdown of the pump when flow falls below the preset level, protecting downstream equipment from cavitation and overheating. Because of its robust pressure rating, the switch can be deployed in high‑pressure cleaning rigs, oil‑field extraction setups, and heavy‑duty hydraulic circuits. Installation is straightforward: connect the inlet to the pump discharge line, attach the outlet to the downstream process line, and link the pilot hose to the control valve. Once installed, the switch provides continuous, real‑time flow verification, reducing the need for manual checks and minimizing downtime.

Why Choose Us

Choosing the RJSPHH flow switch means selecting a product backed by rigorous quality assurance and a reputation for reliability. Each unit undergoes comprehensive testing for pressure tolerance, flow accuracy, and environmental resistance, ensuring it meets or exceeds industry standards. Our manufacturing process incorporates corrosion‑resistant alloys and precision machining, delivering a component that resists wear even in abrasive or chemically aggressive fluids. In addition to the superior build quality, we provide responsive technical support and a clear warranty policy, giving customers confidence that any issues will be addressed promptly. Our commitment to continuous improvement means the design incorporates feedback from field engineers, resulting in a product that aligns with real‑world operational demands. When you purchase from us, you gain access to detailed installation guides, troubleshooting resources, and a dedicated service team ready to assist throughout the product lifecycle.

Key Features

• Accurate 12 GPM flow detection with low‑flow activation at 0.5 GPM, ensuring early warning of system issues.
• Robust 4000 PSI pressure rating provides confidence in high‑stress industrial environments.
• Standard 3/8 inch NPT‑F inlet and outlet simplify integration with existing piping and reduce installation time.
• Built‑in pilot hose barb enables automatic pump shut‑off, protecting equipment from damage caused by low flow.
• Comprehensive after‑sales support, including technical assistance, warranty coverage, and detailed documentation.

FAQ

What is the minimum flow required to activate the switch?

The switch activates at a minimum flow of 0.5 GPM when the system pressure is at least 50 PSI, providing early detection of insufficient flow conditions.

Can this flow switch be used with fluids other than water?

Yes, the switch is compatible with a variety of fluids, including oils, chemicals, and coolants, as long as the fluid does not exceed the maximum operating pressure of 4000 PSI and the material compatibility is verified for corrosive substances.

How do I install the pilot hose for automatic shut‑off?

Connect the 1/4 inch pilot hose barb to the control valve of your pump system. When flow drops below the set point, the pilot line signals the valve to close, stopping the pump and preventing damage.

What warranty does the product include?

The flow switch comes with a one‑year limited warranty covering manufacturing defects. Our support team is available to assist with any warranty claims or technical questions.

Is the switch suitable for high‑temperature applications?

The device is rated for typical industrial temperature ranges. For extreme temperatures, consult the manufacturer’s specifications to ensure compatibility with your specific operating conditions.