Plug Valves Air Valves
Description
Plug valves are mechanical devices used to control the flow of fluids through a pipeline. They consist of a cylindrical or tapered plug that can be rotated inside the valve body to either allow or block the flow of fluid. Air valves, on the other hand, are designed to manage the flow of air within a system, often used to release trapped air or to control air pressure.
Working Principle
Plug valves operate by rotating a plug within the valve body to align the hollow passage of the plug with the flow path, allowing fluid to pass through. This design provides a quick and efficient means of opening or closing the valve, making them useful for applications requiring rapid shut-off. Air valves work by moving a disc or plug into or against an orifice, or by sliding a surface across an orifice, to control the flow of air. They are essential for maintaining system efficiency by preventing air blockages and ensuring proper pressure levels.
Applications
Plug valves are widely used in low-pressure sanitary and industrial applications, such as petroleum pipelines, chemical processing, and power plants. They are particularly effective in handling gas and liquid fuels, as well as extreme temperature flows like boiler feed water and condensate. Air valves are commonly used in systems where air management is critical, such as in water distribution networks to release trapped air and prevent air-related issues.
Advantages over other Air Valves
Plug valves offer several advantages over other types of air valves, including a large capacity for flow and excellent anti-corrosion performance. They provide a quick opening and tight shut-off, which is beneficial in applications requiring rapid response. Unlike butterfly valves, plug valves do not have a loose shut-off, making them more reliable in maintaining a secure seal.
Limitations
One of the main limitations of plug valves is their high torque requirement, which necessitates a larger driver and increases operational costs compared to ball valves. They are also not suitable for throttling applications, as they are designed primarily for on/off control. Additionally, the cost of plug valves is generally higher than that of ball valves, which can be a consideration for budget-conscious projects.
Considerations
When selecting plug valves, it is important to consider the initial cost, which is typically higher than other valve types. Operating expenses may also be elevated due to the higher torque requirements. However, plug valves offer long service life and high reliability, which can offset the initial investment over time. Maintenance costs should also be considered, as improper selection or design of sleeve materials can lead to increased torque and potential valve failure. Durability and accuracy are generally high, making plug valves a dependable choice for many industrial applications.
from Shanghai Thinktank Process Management Co., Ltd
Description. The eccentric rotary plug control valve has a one-piece body design and connects by flanged(ASME Class150/PN25) or wafer type(ASME Class150/PN25). An eccentric plug valve is a type of rotary control valve which has a shaped plug. The plug doesn ’t touch with the valve seat until... [See More]
- Valve Type: Plug; Control Valve; Directional; Shut Off
from Radwell International
PNEUMATIC MANIFOLD BASE, 503 SERIES, 2 STATIONS, SIDE PORT, SINGLE Z-BOARD, 6X8 MM PORT CONNECTION, PLUG-IN. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Plug
- Actuation: Pneumatic
from Radwell International
PRESSURE REGULATOR, SANDWICH PLUG-IN, DUAL PRESSURE / DUAL REGULATOR, 0-150PSI, W/ NO GAUGE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
from Radwell International
DISCONTINUED BY MANUFACTURER, REGULATOR, 1/8 PORT SIZE, SINGLE PRESSURE TO PORT 1(P), 5-60 PSIG, REGULATOR UNIT ONLY, PLUG IN RECEPTACLE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/8" PORTS, DUAL PRESSURE, 5-60 PSIG (0.3-4.1 BAR), PLUG-IN RECEPTACLE, NPTF. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/8" PORTS, SINGLE PRESSURE, 10-130 PSIG (0.7-9 BAR), PLUG-IN RECEPTACLE, NPTF, REGULATOR LESS GAUGE AND FITTINGS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/8" PORTS, SINGLE PRESSURE, 10-130 PSIG (0.7-9 BAR), NON PLUG-IN WIRING, NPTF. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/8" PORTS, 2 PRESSURE SELECTOR, 10-130 PSIG (0.7-9 BAR), PLUG-IN RECEPTACLE, NPTF. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/8" PORTS, 2 PRESSURE SELECTOR, 10-130 PSIG (0.7-9 BAR), PLUG-IN RECEPTACLE, NPTF, FITTINGS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
DUAL PRESSURE REGULATOR, 3/8 INCH PORT, 130 PSIG, PLUG IN RECEPTACLE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
from Radwell International
PNEUMATIC REGULATOR, MARK 15 SERIES, 1/4 INCH NPTF PORTS, SINGLE PRESSURE TO VALVE P(1), 10-130 PSIG, 0.7-9 BAR, PLUG-IN RECEPTACLE ASSEMBLY, FITTINGS FOR TOP FACING GAUGE, REGULATOR UNIT WITHOUT MOUNTING. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK3 SERIES, SINGLE OPERATOR, 1/8 INCH PORT SIZE, SINGLE PRESSURE TO PORT 1 (P), 3-30 PSIG (0.2-2 BAR), NON PLUG-IN, NPTF PORT TYPE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, 2012 SERIES, SPEED CONTROL KIT, 4-PIN, PLUG-IN. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug; Control Valve
- Actuation: Pneumatic
from Radwell International
SANDWICH REGULATOR, SERIES 2035, REGULATOR ASSEMBLY, 10-130 PSIG / 0.7-9 BAR, PLUG-IN WIRING, DUAL PRESSURE, SINGLE SUPPLY, NO OPTIONS ADDED. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
from Radwell International
PNEUMATIC REGULATOR, 2012 SERIES, 3/8" PORTS, SINGLE PRESSURE TO PORT 1 (P), 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK W/SIDE AND BOTTOM PORTS, DOUBLE SOLENOID INTERNAL CIRCUIT BOARD, PLUG-IN RECEPTACLE ASSY, NPTF, TOP FACING GAUGE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug; Solenoid
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/4" PORTS, DUAL PRESSURE, 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK MOUNT, PLUG-IN RECEPTACLE, NPTF, FITTINGS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/4" PORTS, SINGLE PRESSURE, 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK MOUNT, PLUG-IN RECEPTACLE, NPTF. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/4" PORTS, SINGLE PRESSURE, 10-130 PSIG (0.7-9 BAR), INDIVIDUAL BASE, PLUG-IN RECEPTACLE, NPTF. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/4" PORTS, SINGLE PRESSURE, 5-60 PSIG (0.3-4.1 BAR), MANIFOLD BLOCK MOUNT, PLUG-IN RECEPTACLE, NPTF. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, 2012 SERIES, 1/4" PORTS, DUAL PRESSURE TO PORTS 3 (EB) $ 5 (EA), 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK W/SIDE AND BOTTOM PORTS, DOUBLE SOLENOID INTERNAL CIRCUIT BOARD, PLUG-IN RECEPTACLE ASSY, NPTF, TOP FACING GAUGE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug; Solenoid
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, 2012 SERIES, REGULATOR, SINGLE PRESSURE TO PORT 1, 1/4 INCH NPTF, 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK MOUNTED W/ SIDE AND BOTTOM PORTS, PLUG-IN, W/O OPTIONS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, 2012 SERIES, 1/4" PORTS, SINGLE PRESSURE TO PORT 1 (P), 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK W/SIDE AND BOTTOM PORTS, DOUBLE SOLENOID INTERNAL CIRCUIT BOARD, PLUG-IN RECEPTACLE ASSY, NPTF, TOP FACING GAUGE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug; Solenoid
- Actuation: Pneumatic
from Radwell International
REGULATOR, ISO 5599/2, 5-60 PSI, 0.3-4.1 BAR, PLUG-IN. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
from Radwell International
PNEUMATIC REGULATOR, 2035 SERIES, 1/2 INCH PORT SIZE, SINGLE PRESSURE TO PORT 1, 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK MOUNTING, PLUG-IN, NPTF PORT TYPE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK3 SERIES, 1/8" PORT SIZE, DUAL PRESSURE TO PORTS 3 (EB) & 5 (EA), 0-100 PSIG (0-6.9 BAR), REGULATOR UNIT ONLY, NON PLUG-IN, NPTF, JUMPER ON (A) 14 END. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Plug
- Actuation: Pneumatic
from Radwell International
PNEUMATIC REGULATOR, MK8 SERIES, 1/4" PORTS, DUAL PRESSURE W/RELIEVING CHECKS, 10-130 PSIG (0.7-9 BAR), MANIFOLD BLOCK MOUNT, PLUG-IN RECEPTACLE, NPTF, TERMINAL BLOCK IN MOUNTING. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Check; Plug
- Actuation: Pneumatic
from Valcor Engineering Corporation
Description. Valcor ’s lines of Instrumentation Isolation Valves are available with manual operators or pneumatic operators. These valves are single body or manifold bodies with various types of end fittings such as tube, welded or compression fittings. Valcor valves are designed and... [See More]
- Valve Type: Plug
- Media Temperature: -320 to 1200
- Maximum Pressure: 2000.00
- Connection Description: Threaded
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 FITOK GmbH
Founded in 1998, FITOK Group has been an industry-leading developer and manufacturer of superior quality instrumentation valves and fittings, having our R &D centers, manufacturing facilities, warehousing and service locations in Offenbach Germany, Texas USA, Shenzhen China and Dubai UAE. We... [See More]
- Valve Type: Plug
- Flow (Cv): 0.10 to 2.70
- Valve Size: 0.09 to 0.28
- Maximum Pressure: 3000.00
from XOMOX (A Crane Co. Company)
Xomox's Tufline weld end sleeved plug valves offer redundant stem seals, a cavity free design, superior sealing, and an extended service life. See the list below for out full line of weld end sleeved plug valves. [See More]
- Valve Type: Plug
- Flow (Cv): 43.00
- Valve Size: 1.00
- Maximum Pressure: 285.00
from TrimTeck
High performance eccentric plug valve for a wide range of applications. The Optimux OpEXL ™ is characterized by its innovative eccentric plug. Its ‘not-through ’ shaft allows uninterrupted fluid flow and delivers higher Cv ’s . Regular maintenance cycle surpasses five years... [See More]
- Valve Type: Plug; Control Valve
- Flow (Cv): 1.20 to 408.00
- Valve Size: 1.00 to 12.00
- Media Temperature: -20 to 750
from DK-LOK U.S.A.
Operation. D-pro plug valves provide positive shut-off, high flow capacity, and. quick quarter-turn operation. D-pro plug valve provides flow throttling capability. [See More]
- Valve Type: Plug
- Flow (Cv): 0.10
- Valve Size: 0.17
- Maximum Pressure: 3000.00
from Valcor Engineering Corporation
Description. Valcor ’s lines of Instrumentation Isolation Valves are available with manual operators or pneumatic operators. These valves are single body or manifold bodies with various types of end fittings such as tube, welded or compression fittings. Valcor valves are designed and... [See More]
- Valve Type: Plug
- Media Temperature: -320 to 1200
- Maximum Pressure: 2000.00
- Connection Description: Threaded
from XOMOX (A Crane Co. Company)
Xomox Lined Swing check, Ball check, piston check and Poppet check have PFA as standard lining and uses the cast dovetail recesses and machined grooves to lock the liner to the body casting. Xomox fully lined products are a reliable alternative to cost high alloy valves. [See More]
- Valve Type: Plug
- Flow (Cv): 31.00
- Valve Size: 1.00
- Maximum Pressure: 289.00
from XOMOX (A Crane Co. Company)
Xomox offers a wide range of partially jacketed sleeved plug valves to meet your needs. Our partially jacketed plug valves have a cavity free design, excellent in-line sealing and great operating reliability. See below for out list of partially jacketd sleeved plug valves. [See More]
- Valve Type: Plug
- Flow (Cv): 20.00
- Valve Size: 1.00
- Maximum Pressure: 740.00
from XOMOX (A Crane Co. Company)
Xomox's Tufline XP sleeved plug valves have exceptional fugitive emissions control, a patented shrink seal lip, and superior in-line sealing. See below for a list of all of Xomox's XP sleeved plug valves. [See More]
- Valve Type: Plug
- Flow (Cv): 7.00
- Valve Size: 0.50
- Maximum Pressure: 740.00
from XOMOX (A Crane Co. Company)
Xomox offers a wide range of flanged end sleeved plug valves to meet your needs. Our plug valves offer superior in-line sealing, redundant stem seals and 360 degree port retaining lips. See the list below for our line of flanges end sleeved plug valves. [See More]
- Valve Type: Plug
- Flow (Cv): 7.00
- Valve Size: 0.50
- Maximum Pressure: 740.00
from XOMOX (A Crane Co. Company)
Xomox offers a variety of screwed end sleeved plug valves for your processing needs. Whether you require superior in-line sealing, easy adjustment or redundant stem seals. Xomox has a plug valve to fit your needs. See your list of sleeved plug valves below. [See More]
- Valve Type: Plug
- Flow (Cv): 7.00
- Valve Size: 0.50
- Maximum Pressure: 300.00