How Much Does a Steam Boiler Water Level Sight Glass Cost in 2025?

Table of Contents

1. Introduction
2. Factors Influencing Sight Glass Pricing
3. Typical Price Ranges in 2025
4. Top Sight Glass Products in 2025
5. AUKI MICA: Your Trusted Mica Supplier
6. Summary Table: Key Takeaways

Introduction

Steam boiler water level sight glasses are critical for safe boiler operation, providing real-time visibility of water levels. In 2025, their prices vary based on materials, size, pressure ratings, and features. This guide explores the cost landscape and introduces key products and suppliers like AUKI MICA.

Factors Influencing Sight Glass Pricing

1. Material Composition

• Borosilicate Glass: Thermal shock-resistant and affordable.
• Quartz Glass: Premium option with superior thermal stability.

2. Pressure Rating

• Standard Pressure: For regular boiler systems.
• High Pressure: Engineered for extreme conditions.

3. Size and Length

• Longer and thicker glasses cost more due to additional material use.
• Larger diameters support more pressure and visibility.

4. Brand and Manufacturer

• Top brands offer certified, tested products at a premium.

Typical Price Ranges in 2025

• Standard 5/8″ OD Glass (3–16″ length): $9.95 – $20.95
• Red-Line High-Pressure Glass: $16.50 – $32.50
• Heavy-Wall Glass: $22.50 – $32.50
• Integrated Sight Glass Kits: Up to $564.87

Top Sight Glass Products in 2025

1. Boiler Steamer Sight Glass 5/8″ OD High Pressure Clear Wall

• Price: $10.50
• View Product

2. Boiler Steamer Sight Glass 5/8″ OD High Pressure Heavy-Wall

• Price: $32.50
• View Product

3. Boiler Steamer Sight Glass 5/8″ OD High Pressure Red-Line Wall

• Price: $16.50
• View Product

4. Hydrolevel Part #711CF – 120V LWCO Sight Glass Kit

• Price: $564.87
• View Product

5. Wal-rich Gauge Glass (Budget)

• Price: $9.98
• Available from: Home Depot and other major retailers

AUKI MICA: Your Trusted Mica Supplier

AUKI MICA is a premier supplier of high-end mica insulation materials essential for protecting and insulating boiler gauge glasses.

• Own Mines: Pakistan and Afghanistan
• Global Partnerships: Trusted V1 mica mines in Africa and India
• Processing: Sorted and refined in China for export

Product Line Includes:

• Gauge Glass Mica
  Mica Transistor
  Mica Spacer
  Mica Washer
  Mica Disc
  Lampshade Mica
  Mica Wave Plates

Summary Table: Key Takeaways