Winters PFQ804 Pressure Gauge 0-100 Psi 2.5in Dial

Product Description

The WINTERS PFQ804 is a liquid fillable analog pressure gauge designed for accurate pressure monitoring in demanding industrial, commercial, and mechanical system applications. The gauge features a 2.5-inch dial with a dual-scale display and a 0 to 100 psi range, providing a 1.5% of scale accuracy rating that meets ASME B40.100 standards. The 304 stainless steel case and brass wetted parts deliver corrosion resistance in wet or vibration-prone environments. Glycerine fill dampens needle movement and protects internal components from pressure spikes and vibration. HVAC technicians, plumbers, and mechanical contractors install this gauge as part of system monitoring, testing, and commissioning setups.

The PFQ804 is suited for residential and commercial HVAC systems, plumbing and hydronic heating systems, water treatment, and light industrial piping applications. The lower mount configuration with a 0.25-inch NPT connection allows direct in-line or manifold installation. The NSF-61-372 certification makes it appropriate for potable water applications. IP65-rated construction protects against dust and water ingress, extending service life in outdoor or damp mechanical room environments.

Key Features

• Glycerine-filled case dampens vibration and protects against pressure spikes
• 1.5% of scale accuracy meets ASME B40.100 requirements
• 304 stainless steel case with brass wetted parts for corrosion resistance
• Dual-scale analog dial with 2.5-inch diameter for easy field reading
• NSF-61-372 certified for use in potable water systems
• IP65-rated enclosure resists dust and water ingress

Compatibility

Designed as a direct-fit replacement or new-installation pressure gauge for systems using a 0.25-inch NPT lower mount connection with a pressure range up to 100 psi. CRN certification supports use in Canadian-regulated pressure system installations.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical contractor. Shut off system pressure and relieve any residual pressure before removing an existing gauge or installing a new one. Use appropriate thread sealant or PTFE tape on the NPT threads per IPC and IFGC guidelines, and avoid over-tightening to prevent case or fitting damage. Glycerine-filled gauges should be mounted in orientations that keep the lens facing up or outward to prevent air pocket formation in the case.