Everflo

20 Series – Dual Scale

MODEL 20 – General Service Gauges (dual scale)

DESCRIPTION

Model 20 Dual Scale General Service Gauge
1-1/2″, 2″, 2-1/2″, and 4″ casing. Center Back, Bottom, Front or Panel Mount. These gauges are designed for use with gas, oil, and water or any medium not corrosive to brass or bronze. FEATURES

Movement Brass
Bourdon Tube C-Shaped in copper alloy up to 600 PSI and Helical in phosphor bronze above 600 PSI.
Pointer Black enameled aluminum Dial White aluminum
Window Acrylic
Case Material Steel, black painted
Bezel Chrome plated
Connection Material Brass
Connection Size 1/8″ MNPT on 1-1/2″ size. -1/4″ MNPT on 2″, 2-1/2″ and 4″ sizes.
Accuracy ASME/ANSI B40.1 Grade B (3-2-3%)
Fill Material Dry only
Wetted Parts Copper Alloy

STANDARD RANGES

Standard Dial Ranges Availability Graduation
PSI Bar. 1-1/2″ 2″ 2-1/2″ 4″ Major Minor
0-30″ VAC -1 bar x x x 5 .5
30″-0-30 psi -1-0-2 bar x x 10 1
30″-0-60 psi -1-0-4 bar x x 10 1
30″-0-100 psi -1-0-7 bar x x 20 2
30″-0-150 psi -1-0-10 bar x x 20 2
30″-0-300 psi -1-0-20 bar x x 50 5
0-15 psi 0-1 bar x x x x 2 .2
0-30 psi 0-2 bar x x x x 5 .5
0-60 psi 0-4 bar x x x x 10 1
0-100 psi 0-7 bar x x x x 20 2
0-160 psi 0-11 bar x x x x 20 2
0-200 psi 0-14 bar x x x x 50 5
0-300 psi 0-20 bar x x x x 50 5
0-400 psi 0-27 bar x x x x 100 10
0-600 psi 0-40 bar x x x x 100 10
0-1000 psi 0-70 bar x x x x 200 20

- Standard gauge scales – Dual. – Outer scale is PSI – Inner scale is metric (kPa & bar.) CASE STYLE AND DIMENSIONS

Bottom Mount
Size A” B” C” D” E”
1-1/2″ 6.656 1.000 1.297 n/a n/a
2 2.016 1.109 1.687 n/a n/a
2-1/2″ 2.469 1.187 1.828 n/a n/a
4″ 3.969 1.266 2.734 n/a n/a
Back Mount
Size A” B” C” D” E”
1-1/2″ 1.655 0.950 1.600 1.614 n/a
2 2.180 0.900 1.878 2.180 n/a
2-1/2″ 2.490 1.124 1.912 2.425 n/a
4″ 3.969 1.266 2.734 n/a n/a
Front Flange
Size A” B” C” D” E”
1-1/2″ n/a n/a n/a n/a n/a
2 2.106 1.109 1.734 1.937 2.625
2-1/2″ 2.469 1.187 1.828 2.453 3.156
4″ n/a n/a n/a n/a n/a
Panel Mount
Size A” B” C” D” E”
1-1/2″ 1.780 0.900 1.600 1.614 2.365
2 2.016 1.109 1.734 2.062 2.219
2-1/2″ 2.609 1.187 2.109 2.593 2.812
4″ n/a n/a n/a n/a n/a

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