The liquid filling dampens vibration, mechanical shock, and pressure pulsations for easier readings. It protects against corrosion, moisture, and atmospheric icing while lubricating moving parts to significantly reduce wear.

How to choose the right scale range?

The user must ensure that the appropriate pressure gauge has been selected in terms of scale range and design. The scale range is optimally selected when the operating pressure lies in the middle third of the scale range.

Where are liquid filled pressure gauge used?

Examples include Pressure washers and sprayers; Paint spray equipment; Compressors; Irrigation equipment; Hydraulic systems; Hydraulic hand tools

Why doesn't the gauge return to zero?

Release system pressure first. After shipping or temperature changes, case pressure may not balance, so the pointer may not return to zero. Briefly remove or loosen the top plug to equalize pressure, then reseal it. Never remove under pressure.

Why isn't the gauge fully filled with liquid? Are bubbles normal?

Normal. Liquid expands and contracts with temperature. A 100% fill could raise internal pressure when hot, causing lens bulging, leaks, or inaccurate readings. Gauges are usually filled to about 85%, leaving a small buffer. Slight bubbles are normal.

30 Inhg Vacuum Liquid Filled Low Pressure Gauge

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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$22.38

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Stay ahead with precision — never miss a vacuum beat!

ALL WEATHER DURABILITY - Freeze-resistant and corrosion-proof stainless steel casing built to withstand extreme outdoor conditions.
EFFORTLESS INTEGRATION - Standard 1/4" NPT lower mount thread guarantees seamless installation across HVAC, automotive, and industrial setups.
CRYSTAL CLEAR VISIBILITY - 2.5-inch liquid-filled dial delivers fog-free, easy-to-read measurements for quick, confident decision-making.
PRECISION VACUUM MASTERY - Accurately measures low-pressure vacuum up to 30 inHg for flawless system diagnostics.
VIBRATION PROOF STABILITY - Silicone oil-filled dial eliminates pointer flutter, ensuring rock-solid readings even in high-vibration environments.

The SENCTRL 30 inHg Vacuum Liquid Filled Low Pressure Gauge is a rugged, high-accuracy instrument designed for professional HVAC, automotive, and industrial vacuum applications. Featuring a corrosion-resistant stainless steel case, silicone oil-filled mechanism to prevent pointer flutter, and IP67 waterproof rating, it delivers reliable readings in harsh environments. Its 2.5-inch dial and standard 1/4" NPT lower mount ensure easy installation and clear visibility, making it the go-to gauge for precise low-pressure monitoring.

Specifications

ASIN	B0BCYMT1RT
Best Sellers Rank	#528 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Industrial Pressure Gauges
Brand Name	senctrl
Customer Reviews	4.4 4.4 out of 5 stars (219)
Included Components	Vacuum Gauge
Item Highlight	2.5" Dial Size, 1/4" NPT Lower Mount, Stainless Steel Case, for Air Conditioning Manifolds, HVAC, Air Pump Vacuum Oil Test
Item Weight	0.17 kg
Manufacturer	SENCTRL
Material Type	Stainless Steel
Number of Items	1
Number of Packs	1
Part Number	Y.6TSL04
Thread Style	1/4" Npt Male
Unit Count	1 Count

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$22.38

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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30 inHg Vacuum Liquid Filled Low Pressure Gauge

Details

Details

Description

Specifications

Common Questions