A pressure seal is a valve design concept that offers distinct advantages when compared to a conventional bolted body-to-bonnet sealing mechanism.
A pressure seal is a valve design concept that offers distinct advantages when compared to a conventional bolted body-to-bonnet sealing mechanism.
The Pressure Seal Globe Valve is a high-performance valve engineered for precise flow regulation and reliable shutoff in ultra-high-pressure pipeline applications, ideal for steam, oil, gas, and chemical systems. Designed to ASME B16.34 and API 600 standards, this High Pressure Globe Valve features a pressure-seal bonnet for enhanced sealing under extreme pressures up to 4500LB (PN750) and temperatures to 650°C. Constructed from forged ASTM A182 F11/F22 alloy steel or A182 F316 stainless steel, it ensures superior corrosion resistance with optional coatings like epoxy or 3LPE, making it perfect for power plants, refineries, and petrochemical facilities.
Precision-forged with advanced heat treatment, the Forged Steel Globe Valve undergoes 100% non-destructive testing (RT, UT, MT, PT) to ensure structural integrity under extreme conditions. Available in sizes from 2" to 24" (DN50 to DN600) with flanged or butt-weld ends per ASME B16.5/B16.25, it supports manual handwheel or actuated operation with an outside screw and yoke (OS&Y) rising stem for clear position indication. The disc-plug, hard-faced with Stellite #6, provides abrasion resistance and bidirectional sealing, achieving Class VI shutoff per API 598. Hydrostatic shell tests at 1.5x rated pressure confirm tensile strengths above 515 MPa, ensuring durability in cyclic loading and thermal stress.
The Corrosion Resistant Globe Valve excels in throttling high-pressure steam or corrosive fluids, with its globe-shaped body enabling precise flow control (Cv up to 10,000) and minimal cavitation compared to gate valves. The pressure-seal bonnet leverages system pressure to enhance sealing, outperforming bolted bonnets in ultra-high-pressure applications. NACE MR0175 compliant for sour service, it resists H2S and chlorides in aggressive environments like offshore platforms. Optional bellows seals or anti-cavitation trims enhance safety in high-temperature or high-velocity applications. Face-to-face dimensions align with ASME B16.10 for seamless integration.
Compared to standard globe valves, the Pressure Seal Globe Valve offers superior performance in ultra-high-pressure systems, with 3-5 times longer service life due to its forged construction and pressure-seal design. It outperforms ball valves in throttling precision, making it ideal for frequent adjustments in steam or chemical lines. Customizable with pneumatic or electric actuators for automation, it suits remote operations in power generation or petrochemical processing. Compliance with API 6FA for fire safety and SIL 3 for critical systems ensures reliability in hazardous conditions.
Addressing challenges like high-pressure leakage, corrosion, and cavitation, the Industrial Flow Control Valve incorporates secondary seals and low-emission packing for enhanced safety. Its forged design reduces maintenance costs, offering a cost-effective solution for long-term projects. Whether throttling boiler feedwater or isolating high-pressure gas lines, the Pressure Seal Globe Valve delivers precise, reliable High Pressure Globe Valve solutions for global industrial demands.
Engineered for ultra-high-pressure flow control with forged durability and corrosion resistance.
Globe valves manage water flow in a pipeline through a movable plug/disc-type element and a stationary ring seat in a spherical body. The plug is connected to a stem that operates through a screw action.
Here is a quick-reference globe valve diagram for easy understanding:
There are three basic globe valve body designs: Tee, Angle, and Wye. Each design has unique characteristics, advantages, and applications.
Primarily, when people talk about the type of globe valve, they mean the body style.
The classic and most common globe valve design. The seat is placed horizontally, and the stem moves vertically to the flow.
The ends are set at a 90° angle, requiring fluid to make a single turn. Useful for flows that pulse or surge.
The seat and stem are set at a 45° angle, providing a straighter flow path and reducing pressure drop.
Globe valves and Gate valves are among the most common valves used in industrial plants. Both are engineered to keep systems running efficiently and safely, but their unique designs make them suitable for different applications.
| Aspect | Globe Valve | Gate Valve |
|---|---|---|
| Design | Parts are located inside the cavity, with a rising stem that allows flow changes but also contributes to higher pressure drop. | Simpler construction, most internal components are in the upper part of the body. Provides little pressure drop when open. |
| Flow Control | Excellent for throttling and regulating flow. | Designed mainly for on/off service, not ideal for throttling. |
| Pressure Drop | Higher pressure drop due to changes in flow direction. | Low pressure drop when fully open, straight-through flow path. |
| Applications | Used in applications requiring frequent operation and precise flow control. | Common in pipelines for isolation service, where the valve is fully open or closed. |
| Operation Speed | Slower operation due to shorter stem travel. | Faster operation with longer stem travel to open/close fully. |
| Durability | Better suited for throttling but may wear faster under high-pressure drops. | Longer service life when used in fully open or closed positions. |
| Functions | Primarily used as a control valve. | Designed for media isolation, not for flow control. |
| Working | The disc moves parallel to media flow, requiring minimal lift for full flow. | The disc moves at a right angle to the flow, providing either full flow or zero flow. |
| Organization | Standard | Description |
|---|---|---|
| ANSI | American National Standards Institute | General industrial standards |
| API | American Petroleum Institute | Standards for oil and gas industry |
| ASME | American Society of Mechanical Engineers | Boiler and pressure vessel codes |
| BS | British Standards | UK national standards |
| GB, JB, HG | China Valve Standards | Chinese national and industry standards |
Upstream, midstream, and downstream operations, including drilling, refining, and transportation.
Handling corrosive and hazardous chemicals in various chemical plants.
Steam, water, and fuel systems in thermal, nuclear, and hydroelectric plants.
Municipal water supply, wastewater treatment, and industrial water management.
Heating, ventilation, and air conditioning systems in commercial and industrial buildings.
Sterile and hygienic applications, precise flow control in sensitive industries.
Api 602 forged globe valves are designed for high ...
