Dwyer Instruments tl25-300-4l Pressure Gauge 300 Psi

Product Description

The DWYER INSTRUMENTS tl25-300-4l is a utility water pressure gauge designed for monitoring system pressure in plumbing and mechanical applications. The gauge features a 2.5-inch dial face with a range of 0 to 300 psi, providing a clear, readable display for field technicians. Connection is made via a 0.25-inch male pipe thread (MPT) lower-mount fitting, which positions the process connection at the bottom of the gauge body for direct inline or tee installation. Plumbers, pipefitters, and HVAC technicians install this type of gauge to verify operating pressure on water supply, hydronic heating, and general utility piping systems.

This gauge is suited for residential and light commercial water service, hydronic systems, boiler supply lines, and general utility piping where a compact, direct-mount pressure indicator is required. The lower-mount configuration allows installation on horizontal or vertical pipe runs without the need for a separate gauge cock adapter in many standard setups. Its 2.5-inch dial size is a common choice where panel space is limited but readability at close range is still required.

Key Features

• 300 psi pressure range suitable for utility water and hydronic system monitoring
• 2.5-inch dial face for clear, close-range readability
• 0.25-inch MPT lower-mount connection for direct inline installation
• Utility-grade construction for plumbing and mechanical system use
• Compact dial size fits standard pipe fittings and manifold ports

Compatibility

Designed as an OEM-style replacement or service gauge for residential and light commercial plumbing and hydronic systems requiring a 0.25-inch MPT lower-mount pressure gauge with a 300 psi range.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter. Shut off system pressure and depressurize the line before removing any existing gauge or fitting. Apply thread sealant tape or pipe dope to the male threads before threading the gauge into the port; do not overtighten, as gauge bodies can crack under excessive torque. Verify the system operating pressure falls within the gauge range before returning the system to service.

Technical Specifications

• Pressure Range: 0 to 300 psi
• Dial Size: 2.5 inches
• Connection Size: 0.25 inches MPT
• Mount Type: Lower mount
• Application: Utility water pressure

Standard Information

• Brand: DWYER INSTRUMENTS
• Manufacturer Part Number: tl25-300-4l