Heating System Gauge

Brand: Marsh Bellofram Group of Companies

The Heating System Gauge from Marsh Instruments are available in 3-1⁄2″ and 4-1⁄2″ dial sizes in the most popular ranges.

An adjustable red altitude pointer is standard on feet-of-water gauges.

This feature allows the user to indicate the head of water to be maintained in the system.

Marsh Instruments Heating System Gauges provide accurate psi and feet-of-water measurements in elevated tanks, reservoirs, standpipes, and similar applications where reliability and dependability are crucial in heating system equipment.
Features
  • Adjustable Set Hand. 
  • Ranges to 300 psi and 690 Feet of Water. 
  • 3-1/2″ and 4-1/2″ Dials.

Specifications

Accuracy

  • 3-1/2” ASME Grade B ­­­­­­- ± 3/2/3 % (2 % of Range across middle half of scale)
  • 4-1⁄2” ASME Grade A - ± 2/1/2 % (1 % of Range across middle half of scale)

Case Sizes

  • 3-1/2” and 4-1⁄2” diameter

Case Material

  • 4-1⁄2”: Aluminum back flange Case, Black Painted
  • 3-1/2”: Steel, Black Painted

Case Style

  • LM - Lower Mount

Tube & Socket

  • Copper Alloy

Movement

  • 4-1⁄2”: Stainless Steel
  • 3-1/2”: Brass

Connection

  • 1⁄4” NPT

Ranges

  • Dual Scale 15 to 300 psi and 300 to 690 ft. H₂O

Dial Standard

  • psi, ft. H₂O and metric

Dial Color

  • Black Markings on White

Pointer

  • Aluminum, Black Painted with Red set hand

Window

  • 4-1⁄2”: Instrument Glass
  • 3-1/2”: Acrylic Clearlok

Weight

  • 3-1/2”: 2.0 lb
  • 4-1⁄2”: 2.0 lb

Documentation

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