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The ASHCROFT 662876000166 is a commercial-grade analog pressure gauge designed for general-purpose pressure monitoring across a wide range of trade and industrial applications. It covers a range of 0 to 160 psi with a 3-2-3 percent of scale accuracy rating, meaning readings are within 3 percent accuracy at the low and high ends of the scale and 2 percent in the middle third. The 1-1/2 inch dial uses a bronze Bourdon tube as its sensing element, housed in a steel case with a polycarbonate lens. This gauge installs via a 1/8 inch NPT center back mount connection. Plumbers, HVAC technicians, and mechanical contractors are the typical installers on hydronic, refrigeration, and process piping systems.
This gauge fits commercial and light industrial service where a compact, low-cost analog readout is needed at a pressure tap or test port. The 1-1/2 inch dial size makes it suitable for panel-mount or direct pipe-mount installations where space is limited. The center back mount configuration positions the gauge flush against a panel or bracket without a protruding stem. It is commonly used on boilers, compressors, water supply lines, and HVAC equipment pressure ports where a permanent or semi-permanent readout is required.
Designed as an OEM-style or replacement commercial pressure gauge for any system with a 1/8 inch NPT center back port rated within the 0 to 160 psi operating range, including boilers, compressors, water supply systems, and HVAC equipment pressure taps.
Installation is performed by a licensed plumber, pipefitter, or HVAC technician in accordance with applicable local mechanical codes and, where required, CRN-registered pressure system requirements. Depressurize and isolate the system completely before removing an existing gauge or threading in this unit. Apply thread sealant tape or compound to the NPT threads before installation and tighten to snug plus a partial turn using a wrench on the gauge hex body — do not apply torque through the dial housing. Verify system pressure is within the 0 to 160 psi range before returning the circuit to service.
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