Standard Bonnet / Plain Bonnet
The standard BFS Globe & Angle valve bonnet is constructed of the same material as the body and handles temperature up to 400℃ in class 150-600 body designs and 427 ℃ in class 900-2500 body designs.
The extended bonnet protects the packing from excessive heat, which may inhibit valve performance.
Carbon steel constructions can withstand temperature up to 427℃ and 316 stainless steel cnfigurations can withstand temperat-ures from -100℃ to 816℃.
Long Extension Bonnet / Cryogenic Service
The BFS Globe & Angle style, single seat, top entry automatic control valve with a fabricated extension for cold box cryogenic applications to -218℃.
Globe bodies are constructed of bronze or austenitic stainless steel for high impact strength at low temperature and minimum heat transfer.
Bellows Seal Bonnet
Wasted material, employee safety, environmental concerns and EPA regulations: all good reasons for today's plant operations to be concerned about fugitive emissions from hazardous processes. To stop packing leakage from control valves, BFS offers the Welding-Metal-Bellows-Seal control valves.