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Heavy Duty, Differential Pressure Gauges

4.5" Dial, 0 to 20 psi, Differential, Rear Connection


Item# PGD-45B-20

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $1,678.51
10-24 $1,594.58
25-49 $1,561.01
50-99 $1,493.87
100+ $1,460.30

In stock

Lead Time (If not in stock): 7 weeks
4.5" Dial, 0 to 20 psi, Differential, Rear Connection PGD-45B-20 PGD-45B-20
  • Heavy Duty Construction
  • Double-Strength Shatter-Resistant Glass
  • 2-1-2% ANSI Grade A Accuracy

PGD-45B-20 Model Options

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Pressure Range Min
Pressure Range Max
Additional Features
Pressure Type
Pressure Range Units
Pressure Port Type
Pressure Port Size
Accuracy Value
Accuracy Class
Dial Size

  • Accuracy Value 2-1-2%
  • Maximum Ambient Temperature 65°C (150°F)
  • Measurement Type Pressure
  • Wetted Materials Bronze Tube
OMEGA’s PGD Series differential pressure gauges are rugged industrial gauges which indicate the difference between two input connections. Differential ranges provide the maximum resolution for applications where one input is always at a higher pressure than the other. In cases where one input can be higher or lower than the other, a bi-directional differential range should be used. The PGD Series is constructed with two independent Bourdon tubes. The opposing Bourdon tubes are linked to a single pinion gear which rotates a pointer for direct pressure readings. By using two independent Bourdon tubes, the gauge can handle liquids or gases on either or both ports. The large 4½' dial makes reading pressure easy. Each gauge is equipped with a micrometer adjustment for rezeroing the gauge. Gauges are available with ports located in the lower (six o’clock) position or in the rear for panel mounting.

Accuracy: 2-1-2%, ANSI Grade A
(2% first 10%, 1% middle 80%, 2% top 10%
Dial Size: 4½'
Dial Arc: 210°
Window: Double-strength glass
Connection: ¼ NPT male
Sensor Type: Bourdon tube
Wetted Parts:
   Tube: bronze
   Fittings: brass
Case: Black epoxy coated aluminum
Operating Temperature: 65°C (150°F)
Weight: 1.4 kg (3 lb)
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Rated 5 out of 5 by from Solid Gauge. I bought this 1.5 years ago to install into an existing Fluid Metering experiment. Just installed it and worked perfectly. Well, perfect as I reversed the high/low the first time. After reading the gauge face, I realized I installed the high/low backwards. Not the first or last time.
Date published: 2019-07-24
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