John Moncrieff Sightglass Accessories: Premium Quality, Precision-Crafted Optical Components

John Moncrieff Ltd is a leading British manufacturer and supplier of advanced industrial glass solutions, delivering robust, high-performance components trusted across global process industries. Our comprehensive range of sightglass accessories is engineered to enhance visibility, reliability, and operational safety for vessels, pipelines, and production systems.

Designed for demanding environments, our accessories integrate seamlessly with circular sight glasses, ensuring uninterrupted observation and long-term durability in applications spanning chemical processing, pharmaceuticals, food and beverage, energy, and general manufacturing.

Circular Sight Glass Accessories

• Wipers: Precision-machined, centrally operated wiper assemblies designed to maintain a clean viewing surface. Available in multiple sizes and materials to suit varying temperature, chemical, and process environments.
• Spraying Devices: High-efficiency spray systems engineered to wash and clear the sightglass surface during operation, preventing build-up and ensuring continuous, unobstructed visibility.
• Glass Covers: Protective sightglass covers designed to shield the viewing window from mechanical impact, contamination, and harsh atmospheres—extending service life and reducing downtime.

Every accessory supplied by John Moncrieff is built to precise engineering standards, ensuring compatibility, reliability, and superior performance in critical process environments. When visibility and safety matter, our components deliver consistent, long-term operational value.