Transparent Gauge Glass

Key Features and Advantages

• Full Visual Clarity: Provides a true, undistorted view of the liquid, enabling precise observation of its physical properties, color changes, and interface layers between different fluids.
• Superior Chemical Resistance: Made from Borosilicate Glass 3.3, offering excellent resistance to a wide range of acids, alkalis, and other aggressive process fluids, ensuring longevity and integrity.
• High-Pressure & High-Temperature Performance:

Maximum Service Temperature Up to 400°C (depending on operating conditions).

Maximum Working Pressure Up to 340 bar (depending on glass size, medium and temperature).

• Universal Standard Compliance: Our transparent gauge glasses are precisely manufactured to comply with global dimensional and performance standards, making them ideal for new installations or as direct replacements in existing gauge assemblies.

Industrial Applications

Transparent gauge glasses are the preferred choice for demanding applications where detailed visual inspection of the process media is critical, especially in the presence of steam or corrosive substances.

• Steam Boilers: Essential for high-pressure steam applications, particularly when protected by mica shields, to prevent glass etching and ensure safe operation.
• Chemical Processing: Monitoring corrosive liquids, chemical reactions, and interface levels in reactors and storage tanks.
• Petrochemical Industry: Observing crude oil, refined products, and various hydrocarbons where color and clarity are important indicators.
• Pharmaceutical & Food & Beverage: Maintaining hygienic conditions and visually confirming product quality and separation in sanitary processes.
• Any application requiring full visibility: Where reflex glass’s black/silver indication is insufficient for process control.

Technical Specifications

Parameter	Specification
Material	Premium Borosilicate Glass 3.3
Standard Compliance	DIN 7081, JIS B8211, MIL-G-16356D，BS 3463
Maximum Operating Temperature	Up to 400°C (752°F) (depending on operating conditions)
Maximum Operating Pressure	Up to 340 bar (4931 psi) – Varies by size and temperature
Thermal Shock Resistance	ΔT 265°C
Bending Strength	≥ 150 N/mm²
Surface Finish	Two smooth, parallel polished surfaces
Standard Width	30 mm or 34 mm
Standard Thickness	17 mm
Available Lengths (Sizes)	95–420 mm, depending on type

Size

		Type A
Product Code	L (mm)	W (mm)	T ( mm)	Size (mm)
GTA00	95	30	17	95X30X17
GTA01	115	30	17	115X30X17
GTA02	140	30	17	140X30X17
GTA03	165	30	17	165X30X17
GTA04	190	30	17	190X30X17
GTA05	220	30	17	220X30X17
GTA06	250	30	17	250X30X17
GTA07	280	30	17	280X30X17
GTA08	320	30	17	320X30X17
GTA09	340	30	17	340X30X17
GTA10	370	30	17	370X30X17
GTA11	400	30	17	400X30X17
		Type B
Product Code	L (mm)	W (mm)	T (mm)	Size (mm)
GTB00	95	34	17	95X34X17
GTB01	115	34	17	115X34X17
GTB02	140	34	17	140X34X17
GTB03	165	34	17	165X34X17
GTB04	190	34	17	190X34X17
GTB05	220	34	17	220X34X17
GTB06	250	34	17	250X34X17
GTB07	280	34	17	280X34X17
GTB08	320	34	17	320X34X17
GTB09	340	34	17	340X34X17
GTB10	370	34	17	370X34X17
GTB11	400	34	17	400X34X17
GTB12	420	34	17	420X34X17
		Type H
Product Code	L (mm)	W (mm)	T (mm)	Size (mm)
GTH00	95	34	22	95X34X22
GTH01	115	34	22	115X34X22
GTH02	140	34	22	140X34X22
GTH03	165	34	22	165X34X22
GTH04	190	34	22	190X34X22
GTH05	220	34	22	220X34X22
GTH06	250	34	22	250X34X22
GTH07	280	34	22	280X34X22
GTH08	320	34	22	320X34X22
GTH09	340	34	22	340X34X22
GTH10	370	34	22	370X34X22
GTH11	400	34	22	400X34X22

Frequently Asked Questions (FAQ)

• Q: When should I choose Transparent Gauge Glass over Reflex Gauge Glass?
• A: Choose transparent gauge glass when you need to observe the actual color, clarity, or interface of the liquid, or when the liquid is dirty/turbid. It is also mandatory for high-pressure steam applications (typically above 35-40 bar) where mica shields are required to protect the glass from etching. Reflex glass is generally preferred for clear, colorless liquids where a distinct black/silver contrast is sufficient.

• Q: What is a mica shield and why is it used with Transparent Gauge Glass?
• A: A mica shield is a thin, transparent sheet of natural mica (a mineral) placed between the transparent gauge glass and the process fluid. It protects the glass from the corrosive and erosive effects of hot steam and aggressive chemicals, significantly extending the lifespan of the gauge glass and enhancing safety.

• Q: Are your transparent gauge glasses compatible with existing gauge bodies?
• A: Yes, our transparent gauge glasses are manufactured to precise international dimensional standards (e.g., DIN 7081), ensuring they are fully compatible with most standard armored level gauge bodies from various manufacturers worldwide. They serve as reliable, high-quality replacement components.

• Q: Can I customise the size of the transparent gauge glass or add my logo?
• A: We have stock of standard sized transparent gauge glass and can also customise sizes to meet most of your requirements, including printing logos and customizing outer packaging.