Series 1900 4 1/2" Solfrunt gauges are supplied in 30 different vacuum, compound and pressures ranging from 30" Hg vacuum through 11,600 psi. Any low-connected PET turret case or aluminum back flanged case gauge can be easily liquidfilled in the field using the appropriate conversion kit.

Calibration adjustments (scale shape and span) can be accomplished from rear of case without disturbing the gauge internals. Pointer adjustments are easily made by removing ring and window.

Standard Dial Ranges: Pressure Ranges Chart

Compound & Vacuum Ranges chart

Model Selection chart

Dial Size: 4 1/2"

Case and Ring:
For Stem or Wall Mounting - Cast Aluminum, Back-Flanged Case with bayonet ring, black finish and stainless steel pressure-relieving back (Figures 1901T, 1911T, 1931T)

PET Turret Case (black) with glass-filled polypropylene threaded ring and pressure-relieving back (Figures 1980, 1981, 1982, 1986)

Window: High-temperature acrylic

Pointer: Anodized Aluminum, micro-adjustable with black finish.

Dial: Aluminum with baked white background and black markings.

Bourdon Tube: Phosphor bronze/silver brazed; 316 st. stl./TIG welded; or K MONEL, MONEL/nicro-brazed.

Connection: Brass, alloy steel, 316 st. stl. or MONEL, 1/2" ANPT, standard (1/4" ANPT, optional) *Other connections available on request. *Other connections available on request

Accuracy: ±0.5% of span (Grade 2A), except where st. stl. bourdon tubes are used in the following ranges: Type 316 from 10,000 to 15,000 psi-accuracy is ±0.5% on ascending pressure and ±1.0% on descending pressure.

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