Cast Steel WCB Bolted Bonnet Gate Valve with A105N Bypass

This product is a highly reliable Wedge Gate Valve constructed from Cast Carbon Steel ( $\text{A}216 \text{WCB}$ ), featuring a standard Bolted Bonnet design. It is manufactured to the latest $\text{API}$ 600 standard and is designed for robust $\text{ON}/\text{OFF}$ isolation across a wide range of industrial applications, particularly in general oil, gas, and water service.

The inclusion of an $\text{A}105\text{N}$ Bypass is essential for large, high-pressure valves to facilitate opening and protect the internal components.

📋 Key Features and Specifications

Parameter	Detail / Standard
Valve Type	Wedge Gate Valve
Body Material	Cast Carbon Steel ( $\text{A}216 \text{WCB}$ )
Bonnet Type	Bolted Bonnet
Bypass Material	$\text{A}105\text{N}$ (Forged Carbon Steel)
Size Range	$\text{2}''$ to $\text{36}''$
Pressure Rating	$\text{ASME CL} 150$ to $\text{2500}$
Temperature Range (Design)	$\text{-196}^\circ\text{C}$ to $\text{650}^\circ\text{C}$ (Actual $\text{WCB}$ use is $\text{-29}^\circ\text{C}$ to $\text{425}^\circ\text{C}$ )
Design Standard	$\text{API} 600$ (Latest Version), $\text{ASME B} 16.34$
End Connections	Flange ( $\text{ASME B} 16.5/\text{B} 16.47$ ) or Butt-Weld ( $\text{ASME B} 16.25$ )
Testing Standard	$\text{API} 598$

⭐ Core Design and Function

Bolted Bonnet Design: This is the most common bonnet type for $\text{ASME Class 150}$ through $\text{600}$ valves. It uses bolts to secure the bonnet to the body, allowing access for maintenance. (Note: The description mentions both “Bolted Bonnet” and “Pressure Seal Bonnet”—the $\text{WCB}$ and $\text{A}105$ bypass strongly suggest the Bolted Bonnet is the primary design, used up to $\text{CL} 900$ ).
$\text{A}105\text{N}$ Bypass Valve: For large or high-pressure gate valves, a smaller bypass valve is attached. The $\text{A}105\text{N}$ forged carbon steel material provides reliable strength. The bypass is used to equalize pressure across the main wedge before opening the main gate, which significantly reduces the operating torque and prevents seat damage.
Operation: Outside Screw and Yoke ( $\text{OS}\&\text{Y}$ ) design is standard, featuring a rising stem for visible position indication and threads protected from the media.
Flow: When fully open, the gate valve provides minimal pressure drop, acting essentially as a straight piece of pipe. It is designed for full $\text{ON}/\text{OFF}$ isolation and should not be used for throttling.
Wedge Options: Available with Elastic or Solid Wedges with full guidance to ensure tight shut-off and minimize wear.
Actuation: Suitable for Handwheel, Bevel Gear Operator (for larger sizes), or various Actuators (Electric/Pneumatic).