MEASUREMAN 0-15 PSI Liquid-Filled Air Gauge Kit for Oil-Fired Heaters

The 2-1/2-inch dial gives you a clear view of air pressure while checking a low-pressure oil-fired heater. This liquid-filled gauge is designed to dampen vibration and pulsation, helping keep the reading steady during measurement. Its 0-15 PSI range suits heater air-pump checks. A direct pressure reading is a more focused starting point for diagnosis than a general visual inspection alone.

Practical tips

Use the gauge to check the heater’s air-pump output against the pressure specified on the heater’s label. To install it, remove the square or slotted plug from the threaded opening on the left and screw in the gauge’s nipple end. Start the thread carefully to avoid cross-threading. The connection is 1/4-inch NPT with a lower mount.

The opening on the right has an adjustment screw for the ball-and-spring relief valve. Adjust it carefully while watching the gauge, aiming for the heater’s specified pressure. The pump should produce more pressure than the heater requires, with excess air released through the relief valve. After installation, check around the connection for air leaks using soapy water. A leak can affect both pressure readings and heater operation.

If the gauge does not reach the required pressure, the product guidance also points to checking the end-cover seal and plastic cover for leaks or cracks. Set pressure to the heater’s specified value to support adequate fuel delivery and atomization. If the pressure is correct but the heater still does not operate as expected, other fuel-delivery components may need attention.

Tech specs

• Type: Liquid-filled air pressure gauge kit
• Range: 0-15 PSI / 100 kPa, dual scale
• Dial: 2-1/2 inches
• Process connection: 1/4-inch NPT, lower mount
• Case: 304 stainless steel
• Window: Polycarbonate
• Filling: Glycerin
• Accuracy: +/-3-2-3%
• Protection class: IP67
• Dimensions: 12.7 x 7.6 x 5.1 cm
• Weight: 249 g

Benefits

The glycerin filling helps dampen the effect of vibration and pulsation, useful when measuring pressure around operating equipment. The large dial and dual PSI/kPa scale make it easier to read pressure in the units used for the task, while the 0-15 PSI range is tailored to low-pressure heater checks. A stainless-steel case and polycarbonate window complete a compact gauge measuring 12.7 x 7.6 x 5.1 cm.

This kit is intended for checking air-pump output on low-pressure oil-fired heaters, rather than serving as a general-purpose way to inspect every heater system. Buyer feedback describes the gauge as functional for heater repairs, including use with Reddy 55K Btu forced-air heaters, and notes that it meets expectations for quality. Those comments are useful context, the heater’s own label remains the reference for its required pressure.

Buying verdict

For heater owners and service work that call for a direct air-pressure check, this MEASUREMAN kit brings together a 0-15 PSI range, a glycerin-filled dial and a 1/4-inch NPT connection. It provides a practical way to measure pump output and guide pressure adjustment against the heater’s specified setting, making it a focused tool for diagnosing low-pressure oil-fired heater operation.