Boshart - Pressure Gauges

Boshart Pressure Gauges at a Glance

Boshart provides high-quality pressure gauges engineered for reliable, accurate, and long-lasting performance in various commercial and industrial applications. Designed to meet diverse operational requirements, these gauges are available in various mounting options, dial sizes, pressure ranges, and construction materials.

Why Choose Boshart - Pressure Gauges?

Boshart Pressure Gauges are engineered with durable materials and available in a wide range of pressure ratings to deliver accurate readings, even in the most demanding conditions. For enhanced performance, liquid-filled models are also offered, reducing needle vibration and extending the life of the gauge. Reliable and built to last, these pressure gauges provide consistent pressure monitoring you can count on. Now available from our Canadian warehouse—browse our selection below:

4.5" Dry Pressure Gauges with 1/4" Brass Bottom Mount

The 4.5" Dry Pressure Gauge with a 1/4" brass bottom mount offers high precision, durability, and ease of use for general-purpose industrial applications. Featuring a large, easy-to-read dial, re-adjustable pointer, and a robust 304 stainless steel case, it delivers accurate readings with ±1% full-scale accuracy across a wide temperature range (-40°F to 140°F). Its maintenance-free dry design and versatile brass connection make it ideal for various environments, though it is not suitable for oxygen use.

2-1/2" NSF Certified Liquid Filled Pressure Gauges

The 2-1/2" NSF Certified Liquid Filled Pressure Gauges feature a glycerine-filled 304 stainless steel case, a dual PSI/kPa scale, and an accuracy of ±1.5% full-scale value. They operate efficiently across a wide temperature range (-4°F to 140°F) and are certified lead-free (NSF/ANSI 372). Designed for reliability, they ensure stable readings, resist corrosion, and are easy to maintain, making them a dependable choice for accurate pressure monitoring.

2" Dial 100 PSI Pressure Gauge with Stainless Steel Case

The 2" Dial 100 PSI Pressure Gauge with Stainless Steel Case features a robust 304 stainless steel case, glycerine fill for smooth operation, and a 1/4" stainless steel lower stem mount. It offers precise readings with a 3%-2%-3% accuracy grade. Suitable for temperatures from -4°F to 140°F and compliant with NSF/ANSI 372 standards, this liquid-filled gauge is ideal for industrial use where vibration and pressure fluctuations are common.

FAQs

1. Why does my pressure gauge sometimes show a negative or vacuum reading?

A pressure gauge can show a negative or vacuum reading when it measures pressure lower than atmospheric pressure, often seen in suction lines or vacuum systems; this is normal behaviour for compound gauges designed to read both positive pressure and vacuum levels.

2. What causes a pressure gauge to have fluctuating or bouncing needle readings?

Fluctuating needle readings usually happen due to rapid pressure changes in the system, pulsations from pumps, or vibrations; installing a liquid-filled gauge or a snubber can help stabilize the needle and provide more accurate, steady readings.

3. How often should I calibrate a pressure gauge for industrial applications?

For most industrial uses, pressure gauges should be calibrated at least once every six months, but if the system is critical, operates under extreme conditions, or the gauge experiences frequent pressure cycling, quarterly calibration may be necessary to maintain accuracy.

4. Can temperature changes affect the accuracy of a pressure gauge?

Yes, significant temperature fluctuations can cause expansion or contraction of the gauge’s internal components, leading to inaccurate readings, especially if the gauge isn’t temperature-compensated; selecting a gauge rated for your operating temperature range minimizes this risk.

5. What’s the difference between a dry pressure gauge and a liquid-filled pressure gauge?

Dry pressure gauges are ideal for indoor, vibration-free environments, while liquid-filled gauges, typically filled with glycerin or silicone, are better suited for outdoor or high-vibration settings because the liquid dampens the movement, reducing needle flutter and internal wear.