Globe valves excel in throttling applications due to their precise and repeatable flow control capabilities. ACEV Flow Control stands as a pioneering expert in the globe valve market, specializing in cast globe valves tailored to your needs.
ACEV boasts manufacturing prowess, offering cast globe valves ranging from 1/2" to 24" in size and ANSI pressure classes from 150# to 1500#. These valves are crafted from Carbon Steel, Stainless Steel, Alloy 20, and other specialized materials.
The BS 1873 / API 623 series of ACEV globe valves are renowned for their robustness, durability, quality, and integrity. Designed for superior sealing and effortless operation, these valves come with flanged or buttweld ends, pressure ratings from ASME Class 150 to Class 2500, and a variety of construction materials.
The globe valve body is designed in various types, with the Tee-type, Y-type, and Angle type being the most prevalent.
The Z-type, also known as the Tee pattern, stands as the most common and straightforward design. Featuring a Z-shaped partition housing the seat within the globular body, this type allows the disc and stem to move perpendicular to the pipe axis, albeit at the cost of a significant pressure loss. Notably, the seat is easily accessible via the bonnet, connecting to a generous opening atop the valve body. This design ensures that operational pressure fluctuations do not hinder valve performance during throttling.
The Y-type, or Wye pattern, serves as a solution to the high pressure drop issue associated with the Z-type. Here, the seat and stem are angled at approximately 45 degrees to the pipe axis, making this type ideal for high-pressure applications where pressure drops are critical.
Lastly, the Angle type redirects flow by 90 degrees without requiring additional tools or connectors like elbows or welding. In this design, the disc lifts against the downward flow direction, making it resilient to flow fluctuations and capable of enduring slugging effects.
Plug Type Globe Valve
A globe valve, distinct from a ball valve, is a flow regulation device in pipelines, featuring a spherical body containing a movable plug (or disc) and a stationary ring seat.
Named for its spherical shape, the globe valve's body is divided by an internal baffle with an opening that forms a seat. This seat accommodates a movable plug, also known as a disc, which screws into place to close the valve. In manual globe valves, the plug is connected to a stem operated by a handwheel through screw action. Automated versions, however, utilize smooth stems controlled by an actuator assembly.
For cast globe valves, the plug can be either a ball plug or a straight plug-type disc.
Angle Globe Valve
The angle globe valve is a variant of the standard globe valve, distinguished by its 90-degree angled inlet and outlet ports. It operates through linear motion, moving a closure member into and out of a seating surface.
ACEV's angle globe valves boast a streamlined curved bore, optimizing flow and reducing CV values. These valves excel in applications involving pulsating flow, effectively managing the slugging effect. They are frequently utilized in boiler feedwater, heater drain services, and piping systems where space is limited, often doubling as an elbow.
To prevent medium accumulation and crystallization, the valve design can incorporate packing flushing and heating steam jackets. Additionally, features such as cage-style construction, expanded outlet connections, restricted trim, or outlet liners help minimize erosion, flashing, and cavitation damage.
ACEV offers angle globe valves in both forged and cast versions, with exotic material options and short delivery times.
Y Type Globe Valve
Y-pattern globe valves, also known as angle seat valves, offer a proportional opening that mimics the seating disc's travel, serving as a viable alternative to the significant pressure drop associated with standard globe valves.
The innovative Y-type design minimizes flow resistance by angling the seat and stem at approximately 45 degrees. This configuration ensures a straighter flow path at full opening, minimizing resistance and enhancing efficiency. Additionally, the angled seating surfaces experience reduced wear and are effective in controlling high pressures due to their inherent pressure drop. These valves are ideal for throttling applications during seasonal adjustments or startup procedures.
The compact Y configuration not only allows for easier installation in confined spaces but also permits the use of smaller valves, thereby reducing costs for our customers.
ACEV offers Y-pattern globe valves in both forged and cast versions, featuring exotic material options and swift delivery times.
Specifications Overview:
·Size Range: 2" to 24" (DN50 to DN600)
·Pressure Ratings: ASME CLASS 150 to 4500 (PN16 to PN760)
·Temperature Limits: -196°C to 816°C (-320°F to 1500°F)
Construction Features:
·Bolted Bonnet (BB) for ratings up to 900LB, Pressure Seal Bonnet (PSB) for 1500LB & 2500LB
·Cast Steel construction with Outside Screw & Yoke (OS&Y)
·Rising stem and handwheel for manual operation
·Integral backseat and body seat for reliable sealing
·End connections: Flanged (RF, FF, RTJ, etc.), BW, SW, Threaded
·Operation modes: Handwheel, Gear, Actuator ( Pneumatic, Electric, Hydraulic)
·Body materials: Monel, Inconel, Hastelloy, Incoloy, Duplex & Super Duplex, Carbon Steel (including Low Temp), Low Alloy Steel, Stainless Steel, Titanium, etc.
Compliance & Standards:
·Designed in accordance with BS 1873, API 623, ASME B16.34
·Flanged ends adhere to ASME B16.5
·Butt weld ends conform to ASME B16.25
·Face-to-face dimensions meet ASME B16.10, EN558, JIS B2002, MSS SP72
·Pressure-temperature ratings follow ASME B16.34
·Mounting pad compliant with ISO 5211
·Inspection and testing protocols include API 598, EN12266, MSS SP82, ISO 5208
·Fugitive emission standards: ISO 15848, API 624, API 641
·Firesafe certifications: API 607, API 6FA, ISO10497
Optional Features:
·Welded bonnet for enhanced sealing
·Extended bonnet for applications requiring additional space
·Bellows seal for vacuum or high-pressure applications
·Vacuum function capability
·Fugitive emission control
·Compliance with NACE MR-0175 or MR-0103 for corrosion resistance
