14 Inch ASME Class 150 Cast Steel Gate Valve with Chain Wheel Operator

This product is a large-diameter Wedge Gate Valve constructed from Cast Steel ( $\text{WCB}$ ), designed for full $\text{ON}/\text{OFF}$ isolation in low to medium-pressure pipelines. Crucially, this $14''$ valve is equipped with a Chain Wheel Operator (链轮驱动) for easier manual actuation, especially when the valve is installed in high, hard-to-reach locations.

The valve is manufactured to the latest $\text{API}$ standards, ensuring high-quality construction and reliable performance.

📋 Key Specifications

Parameter	Detail / Standard
Specific Size/Class	$\text{14}''$ / $\text{ASME Class 150}$
Actuation	Chain Wheel Operator (Supplements Handwheel/Gear)
Body Material	Cast Steel ( $\text{WCB}$ )
Pressure Class (Specific)	$\text{ASME CL} 150$
Size Range (General)	$\text{2}''$ to $\text{36}''$
Temperature Range (General)	$\text{-196}^\circ\text{C}$ to $\text{650}^\circ\text{C}$
Design Standard	$\text{API} 600$ (Latest Edition), $\text{ASME B} 16.34$
Face-to-Face Standard	$\text{ASME B} 16.10$
End Connections	Flange ( $\text{ASME B} 16.5/\text{B} 16.47$ ) or Butt-Weld ( $\text{ASME B} 16.25$ )
Testing Standard	$\text{API} 598$ (100% tested before delivery)

⭐ Design Features

Operation: The primary drive is the Chain Wheel, which is attached to the handwheel or gear operator, allowing the valve to be operated from the floor via a chain, enhancing safety and accessibility.
Wedge Gate Mechanism: The wedge moves perpendicularly to the flow direction, providing minimal pressure drop when fully open.
Stem Design ( $\text{OS}\&\text{Y}$ ): Outside Screw and Yoke (Rising Stem) is standard, protecting stem threads from media and giving a clear visual indication of valve position.
Bonnet: Uses a Bolted Bonnet or Pressure Seal Bonnet (depending on pressure class) for reliable sealing.
Seats: Available with Socket Welded or Replaceable Seat Rings.
Actuation Options: Suitable for manual Handwheel, Bevel Gear Operation (often required for $\text{14}''$ size), or automated Actuators.

🏭 Application and Function

This Cast Steel Gate Valve is primarily used as an isolation device in medium-pressure pipelines for:

Fluid Service: Water, oil, gas, and steam.
Specific Media: Suitable for media that might contain slurries or viscous fluids as the full-port opening minimizes obstruction.
Function: Designed for fully open or fully closed service; not recommended for throttling or flow regulation.