Globe Valves Air Valves
Description
Globe valves are a type of valve used to regulate the flow of fluids. They function by moving a closure member, known as a disc, squarely on and off the seat. This movement allows for precise control over the flow rate, as the seat opening varies in direct proportion to the travel of the disc. Globe valves are known for their high sealing capacity and are commonly used in fluid-handling systems.
Working Principle
The working principle of globe valves involves a linear motion where the disc moves perpendicular to the seat to open or close the flow. This design allows for effective throttling, as the annular space between the disc and seat ring changes gradually, providing good control over the flow rate. The globe valve's ability to handle bi-directional flow and its suitability for high-pressure and high-temperature applications make it a versatile choice in various systems. The design also minimizes the chance of damage to the seat or valve plug by the fluid, even when the valve is partially open.
Applications
Globe valves are used in a variety of applications, including both gas and liquid systems. They are particularly effective in systems where precise flow regulation is required. Specific examples include their use in steam systems, where they can handle high temperatures and pressures, and in systems that require tight shutoff capabilities to prevent fluid leakage.
Advantages over other Air Valves
Globe valves offer several advantages over other types of air valves. They have excellent sealing capabilities due to the disc and seat design, which provides a tight seal when closed. This makes them effective at preventing fluid leakage. Additionally, globe valves are easy to maintain, as they are generally simple to disassemble, clean, and replace parts. Their good throttling ability and suitability for a wide range of fluids, including liquids, gases, and steam, further enhance their versatility.
Limitations
One of the main limitations of globe valves is the higher pressure drop they create compared to other types of valves. This is due to the resistance to fluid flow caused by the valve's design. Globe valves are also not specified for high purity or slurry systems, as their inherent cavities can promote contamination and allow slurry material to become entrapped, disabling the valve operation.
Considerations
When considering globe valves, it is important to take into account factors such as initial costs, operating expenses, durability, accuracy, and replacement and maintenance costs. Globe valves are generally cost-effective due to their easy maintenance and long service life. However, the higher pressure drop they create can lead to increased operating expenses in certain applications. Durability is typically high, but the specific materials used in the valve construction should be chosen based on the fluid type and operating conditions to ensure long-term performance.
from Shanghai Thinktank Process Management Co., Ltd
Description. SPECIFICATIONS. Body Type. Three-way cast globe valve. Nominal size. 3/4 ’ ’, 1 ’ ’, 1-1/4 ’ ’, 1-1/2 ’ ’, 2 ’ ’, 2-1/2 ’ ’, 3 ’ ’, 4 ’ ’, 5 ’ ’, 6 ’ ’, 8 ’... [See More]
- Valve Type: Globe; Control Valve; Directional; Diverter; Mixing
from Radwell International
DISCONTINUED BY MANUFACTURER, GLOBE VALVE, W/PNEUMATIC ACTUATOR, 0-16 BAR, 3/2-WAY, 3/4 INCH, PTFE SEAL, REPLACED BY 00287194. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Globe
- Actuation: Pneumatic
from Shanghai Thinktank Process Management Co., Ltd
Description. The mixing control valve is mainly used for mixing two fluids into a third fluid. The diverting control valve is mainly used for diverting one fluid into two fluids. Performance Characteristics. 1. HDT/HMT series is a cage guided 3-way valve, blockage of plug and cage can be reduced due... [See More]
- Valve Type: Globe; Control Valve; Directional; Diverter; Mixing
from Radwell International
VG7000 SERIES BRASS TRIM GLOBE VALVES WITH V-3801 COMPACT PNEUMATIC ACTUATORS CONTROL HOT OR CHILLED WATER OR 15 PSIG SATURATED STEAM. VALVE STEM: STAINLESS STEEL. MAXIMUM SUPPLY AIR PRESSURE: 25 PSIG (172 KPA). FLUID TEMPERATURE: 35 TO 248F (2 TO 120C).. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Globe; Control Valve
- Actuation: Pneumatic
from Shanghai Thinktank Process Management Co., Ltd
Description. SPECIFICATIONS. Body Type. Three-way cast globe valve. Nominal size. 3/4 ’ ’, 1 ’ ’, 1-1/4 ’ ’, 1-1/2 ’ ’, 2 ’ ’, 2-1/2 ’ ’, 3 ’ ’, 4 ’ ’, 5 ’ ’, 6 ’ ’, 8 ’... [See More]
- Valve Type: Globe; Control Valve; Diverter
from Radwell International
ANGLE SEAT GLOBE VALVE, PNEUMATICALLY OPERATED, PLASTIC PISTON ACTUATOR, DN15, 2/2-WAY BODY, THREADED SOCKET DIN ISO 228, BODY CC499K, SEAL, PTFE, NC. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Globe; Piston
- Actuation: Pneumatic
- Connection Description: Threaded
from Shanghai Thinktank Process Management Co., Ltd
Description. FEATURES & BENEFITS. Compact designed Pneumatic On/OFF Valve. Easy addition of handwheel, metal bellows seal, and thermal extensions. Bonnet and body made of the same material for process compatibility. Class VI shut-off with PTFE insert in the plug [See More]
- Valve Type: Globe; Control Valve; Shut Off
from Radwell International
GLOBE VALVE, 1.85 CV, 1/2 IN SIZE, TWO-WAY, NORMALLY OPEN, NPT. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Globe
from Shanghai Thinktank Process Management Co., Ltd
Description. SPECIFICATIONS. Body Type. Straight-through, cast globe valve. Nominal size. 3/4 ’ ’, 1 ’ ’, 1-1/4 ’ ’, 1-1/2 ’ ’, 2 ’ ’, 2-1/2 ’ ’, 3 ’ ’, 4 ’ ’, 5 ’ ’, 6 ’ ’, 8... [See More]
- Valve Type: Globe; Control Valve
from Radwell International
DISCONTINUED BY MANUFACTURER, PNEUMATIC VALVE, ANGLE SEAT, GLOBE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Globe
- Actuation: Pneumatic
from Shanghai Thinktank Process Management Co., Ltd
Description. Performance Characteristics. 1. Can be used for high-pressure situations and capable of situations with slurry polymer crystals and high-temperature fluid. 2. This valve is with advantages of simple structure, easy maintenance, which is a cost-effective control valve. 3. This series is... [See More]
- Valve Type: Globe; Control Valve
- Valve Size: 2.00
from Radwell International
VALVE,GLOBE, 2 WAY NORMALLY CLOSED, 3/4", NPT, 6.3 CV LINEAR FLOW BRONZE BODY, STAINLESS STEEL TRIM, HIGH TEMPERATURE PACKING. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Globe
from Shanghai Thinktank Process Management Co., Ltd
Description. Model HTS Pneumatic Top-guided Single Seated Control Valves are designed for heavy-duty service. The compact valve body, having an S-shape flow passage that features low-pressure loss, allows a large flow capacity, rangeability, and high accuracy flow characteristics. The valve plug is... [See More]
- Valve Type: Globe; Control Valve
from Radwell International
GLOBE VALVE, 2-WAY, 1/2 INCH NPT PORT, 1CV, NORMALLY CLOSED, BRONZE BODY. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Globe
from Gemu Valves
Construction. The GEMU 312/314 pneumatically operated 3/2-way valves have a rugged low maintenance aluminium piston actuator. GEMU 312 is flanged, GEMU 314 has threaded sockets. The connection for the control medium can be rotated through 360 °. The double sided valve plug is connected to the... [See More]
- Valve Type: Globe
- Media Temperature: 176 to 356
- Maximum Pressure: 29.01 to 232.06
- Connection Description: Threaded (optional feature); BoltFlange (optional feature)
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Valve Type: Check; Ball Check; Globe; Hydraulic (optional feature)
- Maximum Pressure: ? to 1480.00
- Valve Size: 2.00 to 30.00
- Media Temperature: ? to 100
from Xiamen Landee Industries Co., Ltd.
Cast Iron Valves, Meeting Global Quality Standards. Model Number: LD 012-CI. Key Specifications/Special Features: Types: gate, globe, check, ball, butterfly, plug, foot, angle, air, Y-strainer... Manufacturing standards: API, ANSI, BS, DIN, JIS, MSS SP. Size range: from 1/2 inch to 64 inch (DN15mm -... [See More]
- Valve Type: Check; Ball Check; Foot Valve; Angle; Ball; Butterfly; Gate; Globe; Plug
- Connection Description: Flanged
- Valve Size: 0.50 to 64.00
- Actuation: Manual
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
High Pressure Piping, Valves and Fittings. Based on the High-pressure valves and fittings to IG standards for pressure ratings of 325 and 700 bar, Chemac Inc offers these for pressure ratings of 500, 1600, 2500, 3200, 3600 and 4000 bar in similar construction with lens-type gaskets. Valves with... [See More]
- Valve Type: Check; Angle; Butterfly; Diaphragm; Globe; Piston; Control Valve; Relief
from Gemu Valves
Construction. The GEMU 507 manually operated 2/2 way angle seat globe valve has an ergonomically designed plastic handwheel. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a long service life. The wiper ring... [See More]
- Valve Type: Globe
- Maximum Pressure: 232.06 to 362.59
- Valve Size: 0.24 to 3.15
- Media Temperature: 356
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Valve Type: Check; Ball Check; Globe; Hydraulic (optional feature)
- Maximum Pressure: ? to 225.00
- Valve Size: 2.00 to 30.00
- Media Temperature: ? to 150
from Gemu Valves
Construction. The GEMU 514 pneumatically operated 2/2 way angle seat globe valve has a low maintenance aluminium piston actuator. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a long service life. The wiper ring... [See More]
- Valve Type: Globe
- Media Temperature: 176 to 356
- Valve Size: 0.59 to 3.15
- Connection Description: Threaded (optional feature); Butt Weld (optional feature)
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications. [See More]
- Valve Type: Check; Ball Check; Globe; Hydraulic (optional feature)
- Maximum Pressure: ? to 500.00
- Valve Size: 2.00 to 30.00
- Media Temperature: ? to 150
from Gemu Valves
Construction. The GEMU 550 pneumatically operated 2/2 way angle seat globe valve has a low maintenance piston actuator and PTFE seat providing reliable operation. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a... [See More]
- Valve Type: Globe
- Maximum Pressure: 43.51 to 362.59
- Valve Size: 0.31 to 3.15
- Media Temperature: 14 to 356
from Mueller Steam Specialty
Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge. [See More]
- Valve Type: Check; Ball Check; Globe; Hydraulic (optional feature)
- Maximum Pressure: 150.00 to 200.00
- Valve Size: 2.00 to 30.00
- Media Temperature: ? to 150
from Gemu Valves
Construction. The GEMU 554 pneumatically operated 2/2 way angle seat globe valve, which can also be used at relatively high temperatures, has a plastic pneumatic piston actuator and PTFE seat providing reliable operation. The valve spindle is sealed by a self-adjusting gland packing providing low... [See More]
- Valve Type: Globe
- Maximum Pressure: 36.26 to 362.59
- Valve Size: 0.39 to 3.15
- Media Temperature: 140 to 356
from Gemu Valves
Construction. GEMU 563, 568 is a motorized 2/2 way control valve with a low maintenance reversible synchronous electric motor. The valve is operated via a reduction gear and spring loaded cam, ensuring continuous contact between the cam and the valve spindle. Features. Suitable for inert and... [See More]
- Valve Type: Globe
- Maximum Pressure: 13.05 to 87.02
- Valve Size: 0.12 to 0.59
- Media Temperature: 176
from Gemu Valves
Construction. The GEMU 512 pneumatically operated 2/2 way globe valve has a robust low maintenance aluminium piston actuator. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a long service life. The wiper ring... [See More]
- Valve Type: Globe
- Maximum Pressure: 130.53 to 577.25
- Valve Size: 0.59 to 3.94
- Media Temperature: 176 to 356