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Square boiler gauge steel case glass lens bottom connection 1/2 inch NPT dual scale PSI Fahrenheit Celsius new condition

Value Brand

Value Brand 4CFD1 Square Boiler Gauge 0-200 PSI 80-320°F

SKU CH-C6TH-8Z907

Square boiler gauge measures pressure up to 200 psi and temperature from 80 to 320 °F with a steel case and glass lens

  • Product typeElectronic
  • Dual pressure and temperature monitoring in one gauge
  • Reads up to 200 PSI for system pressure checks
  • Temperature range from 80 to 320 degrees Fahrenheit
  • Accuracy within three percent for reliable readings
  • Steel case with glass lens for durability

Square Boiler Gauge 0–200 PSI

This square boiler gauge measures pressure from zero to 200 psi and temperature from 80 to 320 degrees Fahrenheit. It is built for technicians who need a single instrument to monitor both values on hydronic heating systems. The 1/2 inch MNPT bottom connection fits standard boiler tappings without adapters.

Accuracy Limits ±3–2–3 %

Pressure accuracy follows the ±3–2–3 percent grade, meaning the middle third of the scale is tighter than the ends. Temperature accuracy is rated at ±3 percent across the 30 to 160 degrees Celsius range. Readings near the extremes of the dial carry the wider tolerance band.

Brass Wetted Parts Compatibility

The wetted components are brass and bronze, so the gauge suits water and glycol loops compatible with those alloys. It is not intended for service with ammonia, strong acids or other media that attack copper-based metals. Buyers who need stainless-steel wetted parts for aggressive fluids should select a different model.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 69% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameZORO SELECT
Product typeElectronic

Questions about this item

How do I decide between the 0-200 psi range and the 80-320 °F temperature scale for my boiler?

The gauge shows both pressure and temperature simultaneously, so you read the psi needle against the 0-200 scale and the temperature needle against the 80-320 °F scale without choosing one over the other.

What does the ±3-2-3 % accuracy figure tell me about a pressure reading on this gauge?

The ±3-2-3 % accuracy applies to the 0-200 psi span, meaning the pressure needle can deviate by that percentage of full scale at different points across the range.

What does the 1/2 in MNPT connection limit when I install the gauge?

The 1/2 in MNPT bottom connection fits standard boiler tappings of that size and thread type; it cannot be used with larger or smaller ports without an adapter.

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