Reflex Gauge Glass DIN 7081

Key Features and Advantages

• High-Contrast Level Indication
  The prism surface creates a clear difference between the bright gas area and dark liquid area for fast level identification.
• Direct, Power-Free Observation
  Provides continuous visual liquid-level indication without sensors, electrical power or external display equipment.
• Heat-Resistant Borosilicate Glass
  Offers good thermal stability, mechanical strength and durability in compatible industrial level gauge assemblies.
• Standard Replacement Sizes
  Available in common DIN 7081 dimensions for replacement in compatible reflex level gauge bodies.

Industrial Applications

Reflex gauge glasses are the industry standard for direct-reading level indicators where clear visibility and safety are paramount. They are widely utilized across various sectors that handle hazardous, high-temperature, or high-pressure fluids.

• Oil and Gas Refineries: Monitoring levels in separators, distillation columns, and storage tanks.
• Chemical and Petrochemical Plants: Safe observation of corrosive liquids and chemical reactions in process vessels.
• Power Generation: Critical for monitoring water levels in steam boilers and feedwater heaters to prevent catastrophic failures.
• Pharmaceutical and Food Processing: Ensuring precise liquid volume control in sanitary and hygienic manufacturing environments.

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	Precision molded prismatic grooves (90° angle)
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)
GRA00	95	30	17	95X30X17
GRA01	115	30	17	115X30X17
GRA02	140	30	17	140X30X17
GRA03	165	30	17	165X30X17
GRA04	190	30	17	190X30X17
GRA05	220	30	17	220X30X17
GRA06	250	30	17	250X30X17
GRA07	280	30	17	280X30X17
GRA08	320	30	17	320X30X17
GRA09	340	30	17	340X30X17
GRA10	370	30	17	370X30X17
GRA11	400	30	17	400X30X17
		Type B
Product Code	L (mm)	W (mm)	T (mm)	Size (mm)
GRB00	95	34	17	95X34X17
GRB01	115	34	17	115X34X17
GRB02	140	34	17	140X34X17
GRB03	165	34	17	165X34X17
GRB04	190	34	17	190X34X17
GRB05	220	34	17	220X34X17
GRB06	250	34	17	250X34X17
GRB07	280	34	17	280X34X17
GRB08	320	34	17	320X34X17
GRB09	340	34	17	340X34X17
GRB10	370	34	17	370X34X17
GRB11	400	34	17	400X34X17
GRB12	420	34	17	420X34X17
		Type H
Product Code	L (mm)	W (mm)	T (mm)	Size (mm)
GRH00	95	34	22	95X34X22
GRH01	115	34	22	115X34X22
GRH02	140	34	22	140X34X22
GRH03	165	34	22	165X34X22
GRH04	190	34	22	190X34X22
GRH05	220	34	22	220X34X22
GRH06	250	34	22	250X34X22
GRH07	280	34	22	280X34X22
GRH08	320	34	22	320X34X22
GRH09	340	34	22	340X34X22
GRH10	370	34	22	370X34X22
GRH11	400	34	22	400X34X22

Frequently Asked Questions (FAQ)

• Q: What is the difference between Reflex and Transparent gauge glass?
• A: Reflex glass has prismatic grooves on the liquid side, making the liquid appear black and the gas appear silver, which is ideal for clear liquids. Transparent glass is smooth on both sides and is used with an illuminator to view the color, interface, or particulate matter within the fluid.

• Q: Are your Borosilicate Reflex Gauge Glasses compatible with my existing gauge bodies?
• A: Yes, our Borosilicate Reflex Gauge Glasses are manufactured to precise international dimensional standards (DIN 7081), and material (Borosilicate Glass 3.3). They are fully compatible with most standard armoured level gauge bodies from various manufacturers worldwide and can be used as high-quality, reliable replacement parts for your existing level gauge assemblies.

• Q: Are reflex gauge glasses suitable for high-pressure steam applications?
• A: While highly durable, reflex gauge glasses are generally recommended for steam applications up to a certain pressure limit (typically around 35-40 bar). For extremely high-pressure steam, transparent gauge glasses protected by mica shields are often required to prevent the glass from being etched by the steam.

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