Wika 4253272 Pressure Gauge 0-30 Psi 2 in Dial Npt Back Mount

Product Description

The WIKA 4253272 is an analog pressure gauge designed for monitoring system pressure in a range of plumbing, HVAC, and light industrial applications. It features a 2-inch dial with a 0 to 30 psi range, making it well suited for low-pressure fluid and gas systems. The gauge uses a 1/4-inch NPT center back mount connection, allowing direct inline or panel installation. The ABS case and plastic lens keep weight low at 0.2 pounds, while brass wetted parts provide compatibility with common water, oil, and gas media. Accuracy is rated at 3-2-3 percent of scale across the full range.

This gauge fits residential and light commercial service work where a compact, economical pressure indicator is needed. Typical applications include water supply lines, air compressor outlets, pump discharge monitoring, and HVAC hydronic circuits. The center back mount orientation suits panel-mounted or direct pipe installations where the face must be readable from the front. The no-fill, dry-bourdon design keeps maintenance minimal in clean-media environments.

Key Features

• 0 to 30 psi range with single analog scale for straightforward low-pressure monitoring
• 2-inch dial diameter for compact installations with clear readability
• 1/4-inch NPT center back mount connection for direct pipe or panel use
• Brass wetted parts compatible with water, light oils, and dry gases
• ABS case with plastic lens — lightweight at 0.2 pounds
• 3-2-3 percent of scale accuracy across the full pressure range

Compatibility

Designed as an OEM-style replacement or service addition for residential and light commercial systems requiring a 2-inch NPT back-mount pressure gauge rated to 30 psi.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or qualified service technician. Shut off and depressurize the system fully before removing or installing any pressure gauge. Apply thread sealant tape appropriate to the media — PTFE tape is standard for water and air — to the 1/4-inch NPT male threads before threading into the port. Do not over-tighten; use a wrench on the hex fitting only, not on the case body.