Weiss Instruments lf251-015-4l Pressure Gauge 0-15 Psi

Product Description

The WEISS INSTRUMENTS lf251-015-4l is a liquid filled pressure gauge designed to monitor system pressure in plumbing, HVAC, and fluid handling applications. The liquid fill dampens needle vibration and protects internal components from pulsation and pressure spikes, extending service life in demanding environments. The gauge covers a range of 0 to 15 PSI and connects via a 1/4 inch lower connection or center back port, giving installers flexibility in mounting orientation. Licensed plumbers, HVAC technicians, and mechanical contractors typically specify this gauge for low-pressure system monitoring and service verification.

This gauge suits residential and light commercial installations where low-pressure fluid or gas system monitoring is required. The 1/4 inch connection fits standard fittings commonly found on boilers, water supply lines, and HVAC hydronic systems. The liquid filled case makes it well suited for equipment subject to vibration or pulsation, such as pumps and compressors, where a dry gauge would lose accuracy or fail prematurely.

Key Features

• Liquid filled case dampens vibration and protects against pressure pulsation
• 0 to 15 PSI range for low-pressure system monitoring
• 1/4 inch lower connection or center back connection for flexible mounting
• Dual connection option simplifies installation in tight or varied panel layouts

Compatibility

Designed as an OEM-style replacement or direct-install gauge for low-pressure plumbing, HVAC hydronic, and fluid handling systems requiring a 1/4 inch port connection.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Shut down and depressurize the system completely before removing or installing any pressure gauge. Use appropriate thread sealant on the 1/4 inch NPT connection and avoid over-tightening, which can damage the gauge body. Verify the installed gauge range is appropriate for the operating pressure of the system before returning to service.

Technical Specifications

• Pressure Range: 0-15 PSI
• Connection Size: 1/4 inch
• Connection Type: Lower or Center Back
• Fill Type: Liquid Filled

Standard Information

• Brand: WEISS INSTRUMENTS
• Manufacturer Part Number: lf251-015-4l