Wika 4253290 Pressure Gauge 0-100 Psi 2 in Npt Back Mount

Product Description

The WIKA 4253290 is a dry, analog pressure gauge designed for general-purpose pressure monitoring in HVAC, plumbing, and industrial service applications. It features a 2-inch diameter dial with a 0 to 100 PSI range and 3-2-3 percent of scale accuracy, making it suitable for routine system checks and commissioning work. The gauge uses a 1/4-inch NPT center back mount connection, an ABS plastic case, and brass wetted parts. Licensed trade professionals and service technicians install this gauge on pipelines, air compressors, water systems, and similar low-to-mid-pressure circuits where a compact, readable instrument is required.

This gauge is appropriate for residential and light commercial applications where pressures do not exceed 100 PSI. Typical install scenarios include water supply line monitoring, compressed air systems, boiler loop pressure checks, and HVAC hydronic circuit testing. The center back mount configuration allows flush or panel-style mounting against a wall or bracket. The no-fill dry design keeps installation straightforward with no liquid-fill handling required.

Key Features

• 0 to 100 PSI pressure range with analog dial readout
• 3-2-3 percent of scale accuracy for reliable field readings
• 2-inch dial diameter for clear visibility in tight spaces
• 1/4-inch NPT center back mount connection
• ABS case construction resists impact and common shop environments
• Brass wetted parts compatible with water, air, and many common system fluids
• Dry no-fill design — no glycerin or silicone fill to manage

Compatibility

Designed as an OEM-style replacement or new-installation gauge for residential and light commercial systems requiring a 1/4-inch NPT center back mount pressure gauge with a 2-inch dial.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or qualified service technicians. Shut off system pressure and relieve line pressure completely before removing an existing gauge or threading in the new unit. Use appropriate thread sealant or PTFE tape on NPT threads and tighten to a wrench-tight fit — do not overtighten the ABS case. Verify the system operating pressure falls within the 0 to 100 PSI range before returning the system to service.