Overview

This document provides technical details about the HSD series Low Lift Safety Valves with Open Bonnet design, specifically models HSD42 and HSD43.

Main Components and Dimensions

The document lists various dimensional parameters and designations relevant to the valves, including:

• L: Likely the overall length or height dimension.
• z-Ød: Number and diameter of bolt holes for flange connections.
• LEAD and SEAD: Possibly referring to lead and seat dimensions or specific design features.
• D1, DN, D, D0: Various diameter measurements related to flange and valve body sizes.
• G: Could indicate thread size or another dimensional parameter.

Valve Identification

The models HSD42 and HSD43 are identified as part of the Low Lift Safety Valve range with open bonnet construction, which typically allows for easier maintenance and inspection.

Summary of Key Points

• The document focuses on dimensional and design specifications critical for installation and compatibility.
• Open bonnet design suggests maintenance accessibility.
• Flange and bolt hole details are essential for proper mounting.

Limitations

The document excerpt does not provide operational parameters, material specifications, or performance data.

Recommendations

For complete application and safety compliance, consult full technical datasheets including pressure ratings, material certifications, and installation procedures.