BZ41H BZ41Y Jacketed gate valve manufacturer, factory and supplier. BZ41H BZ41Y Jacketed gate valve is an engineered isolation valve dedicated to process media that easily crystallizes, solidifies, waxes or becomes highly viscous when temperature decreases. An integral heating jacket wraps around the valve body, ensuring even circulation of heating media including saturated steam, thermal oil or hot water. BZ41H BZ41Y Jacketed gate valve keeps the fluid temperature above its solidification point, avoiding medium deposition, cavity blockage and valve jamming that frequently happen on standard gate valves.

Unlike jacketed globe valves for throttling, BZ41H BZ41Y Jacketed gate valve is designed for full open / full closed isolation service. When fully opened, the straight-through bore offers minimal flow resistance and low pressure loss, which makes it ideal for clean or slightly viscous pipelines requiring unobstructed flow. It is not recommended for continuous throttling operation, as partial opening may cause trim erosion and unstable flow.

BZ41H BZ41Y Jacketed gate valve can be supplied with handwheel operation, or fitted with pneumatic, electric actuator for remote automatic control. Rising stem or non-rising stem designs are optional. Metal-to-metal seat is the standard configuration; special soft seat can be offered for low-leakage service subject to temperature limits. Stellite hardfacing on gate and seat is available for abrasive, corrosive or high-temperature working conditions.
 

BZ41H BZ41Y Jacketed gate valve Main Specifications:

Size range: DN15 ~ DN400 (NPS ½” ~ 16”)
Pressure class: Class150, Class300, Class600; PN16, PN25, PN40, PN63
Body material: WCB, WC6, WC9, CF8, CF8M, CF3M, duplex stainless steel
Trim material: 416SS, 316SS, Stellite 6 / Stellite 12 hardfaced
End connection: RF flange to ASME B16.5 or EN 1092-1; BW ends available on request
Jacket connection: ½” or ¾” NPT / BSP threaded ports for heating medium inlet & outlet
Bonnet type: Standard bonnet, extended bonnet, bellow seal bonnet for fugitive emission control
Testing: Shell and seat leakage test per API 598 or EN 12266
 

BZ41H BZ41Y Jacketed gate valve Typical Applications:

Chemical, petrochemical, refinery, asphalt & bitumen transfer, molten sulfur, resin, wax and other high-viscosity, freeze-sensitive media pipelines where only full open or full closed isolation is required.