Wika 4270910 Pressure Gauge 0-100 Psi 2 in Dial Npt

Product Description

The WIKA 4270910 is a 2-inch dial analog pressure gauge designed for monitoring system pressure in plumbing, HVAC, and light industrial applications. It reads from 0 to 100 psi on a single-scale dial and connects via a 1/4-inch NPT center back mount fitting. The steel case and brass wetted parts provide durability in typical wet-service environments. Accuracy is rated at 3-2-3 percent of scale, meaning the middle portion of the range holds tighter tolerance than the outer thirds. The plastic lens protects the dial face. Licensed plumbers, HVAC technicians, and pipefitters commonly install this gauge for panel or manifold mounting using the included U-clamp bracket.

This gauge suits residential and light commercial installations where a compact, surface-mounted pressure indicator is needed. The U-clamp panel mount allows the gauge to be secured to a panel cutout with the connection made from the center back, keeping the face flush and readable. Typical applications include hydronic heating systems, compressed air lines, water supply monitoring, and refrigeration-adjacent fluid circuits that operate within the 0 to 100 psi range. The no-fill dry design eliminates concerns about glycerin or silicone contamination in clean-fluid systems.

Key Features

• 2-inch dial diameter for compact panel installations
• 0 to 100 psi single-scale analog readout
• 3-2-3 percent of scale accuracy across the full range
• 1/4-inch NPT center back connection for panel-flush mounting
• U-clamp bracket included for secure panel mount attachment
• Steel case with brass wetted parts for corrosion resistance in fluid service
• Dry no-fill design — no liquid dampening agent

Compatibility

Designed as an OEM-style replacement or direct-install pressure gauge for systems requiring a 2-inch dial, 1/4-inch NPT, center back mount instrument in the 0 to 100 psi range.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician. Shut off and depressurize the system completely before removing any existing gauge or fitting. Apply thread sealant or PTFE tape to the NPT threads per standard practice — do not overtighten, as brass NPT fittings can crack under excessive torque. Secure the gauge body using the U-clamp bracket before pressurizing the system, and inspect for leaks at the connection point during initial startup.