Spectacle Blind RF Dimensions - Complete Guide

Spectacle blind flanges with raised face (RF) are critical safety components used in piping systems for positive isolation during maintenance and equipment shutdowns. These figure-8 shaped devices, manufactured according to ASME B16.48 standards, feature both a solid blind plate and an open spacer ring connected by a web section.

The raised face configuration provides enhanced sealing capability compared to flat face designs, with RF heights of 2mm for Class 150-300 and 7mm for Class 600-2500 pressure ratings. Proper dimensional specifications are essential for ensuring compatibility with ASME B16.5 flanges and maintaining system integrity.

This comprehensive resource provides detailed dimensional charts, weight tables, and technical specifications for spectacle blind RF configurations across all pressure classes from 150 to 2500. Engineers and procurement professionals can access accurate measurements for pipe sizes ranging from ½ inch to 24 inches, ensuring proper selection and installation.

Whether you're working with carbon steel, stainless steel, or specialty alloy materials, understanding the precise RF dimensions is crucial for safe and reliable piping operations.