Pressure Gauges

Q: Why does a side channel blower need a pressure gauge?

A gauge on the discharge manifold shows the actual working pressure, so you can confirm the blower is inside its duty range before back pressure damages it.

Q: How do I choose the right pressure range?

Take your blower’s normal working pressure and pick a gauge with a full-scale range around 1.5 times that figure, so the needle sits mid-dial and the range still exceeds the blower’s maximum discharge.

Q: What is the difference between BSPT and NPT?

They are different thread forms and are not interchangeable, so check the tapping on your manifold or gauge port before ordering.

Q: Why are most of these gauges liquid filled?

Glycerine filling damps needle flutter caused by blower pulsation and vibration, which keeps the dial readable and extends gauge life.

Q: Which gauge suits an oxygen cone?

Use the 0-250 kPa oxygen cone model in full 316 stainless with a 1/4 inch NPT bottom mount, which is built for oxygen service.

Q: Should I choose bottom entry or rear entry?

Bottom entry suits a gauge teed straight off the discharge manifold, while rear entry suits gauges mounted through a panel or bracket.

Q: What if the range or thread I need is not listed?

Contact Fresh By Design – a wider range of gauges, dial sizes and thread types is available than the models stocked online.

Pressure gauges for blowers, oxygen cones and pipework in aquaculture systems.

Price range: $35.00 through $230.00 ex GST

Option

Clear

Categories: Aeration, Blowers and Air Pumps, Oxygen & Ozone, Plumbing Fittings

Applications: Hatchery, Live Holding & Purging, LSS, RAS

Product Information

Key Features

Six stocked ranges — 0–40 kPa, 0–100 kPa, 0–250 kPa and 0–1,000 kPa — all on a 63 mm dial
Liquid-filled cases on every model except the 0–40 kPa gauge, damping needle flutter from blower pulsation and vibration
304 stainless steel cases with brass, copper, 316 stainless or full 316 stainless wetted threads to suit the service
1/4″ BSPT or 1/4″ NPT connection in bottom entry, rear entry or bottom mount
Rear-entry models suit panel and bracket mounting; bottom-entry models suit a tee off the blower discharge manifold
Dedicated oxygen cone gauge in full 316 stainless with a 1/4″ NPT bottom mount for oxygen service
Every range is marked in both kPa and psi, so it reads against either specification
Size on pressure range and thread: pick a full-scale range that comfortably exceeds your blower’s maximum discharge pressure — roughly 1.5 times normal working pressure so the needle sits mid-dial — then match 1/4″ BSPT or NPT to your tapping

Specifications

Pressure range	SKU	Dial / case	Wetted thread	Connection	Fill
0–40 kPa (0–5.8 psi)	1012616	63 mm, 304 SS	Brass	1/4" BSPT, bottom entry	Dry
0–100 kPa (0–15 psi)	1615100	63 mm, 304 SS	Copper	1/4" BSPT, rear entry	Liquid filled
0–100 kPa (0–15 psi)	1369218	63 mm, 304 SS	316 SS	1/4" NPT, rear entry	Liquid filled
0–250 kPa (0–36 psi)	1613950H	63 mm, 304 SS	Brass	1/4" BSPT, bottom entry	Liquid filled
0–250 kPa (0–36 psi) — oxygen cone model	1369046RB	63 mm, 316 SS	316 SS	1/4" NPT, bottom mount	Liquid filled
0–1,000 kPa (0–150 psi)	1369060RB	63 mm, 304 SS	316 SS	1/4" BSPT, bottom entry	Liquid filled
Other ranges, dial sizes and threads	On request	—	—	—	Contact Fresh By Design

Frequently Asked Questions

Why does a side channel blower need a pressure gauge?

How do I choose the right pressure range?

What is the difference between BSPT and NPT?

Why are most of these gauges liquid filled?

Which gauge suits an oxygen cone?

Should I choose bottom entry or rear entry?

What if the range or thread I need is not listed?

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Pressure Gauges

Product Information

Key Features

Specifications

Frequently Asked Questions

Spare Parts & Consumables

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