Ductile Iron Plug Valves
Description
Ductile Iron Plug Valves are designed to control the flow of fluids through a pipeline. They achieve this by using a cylindrical or conically tapered plug that can be rotated inside the valve body to either allow or block the flow of fluid.
Working Principle
The working principle of ductile iron plug valves involves a plug that is mounted within the valve body. This plug can be rotated to align its hollow passage with the flow path, allowing fluid to pass through, or turned perpendicular to the flow path to stop the flow. The simplicity of this design makes plug valves highly reliable and easy to operate. They are particularly useful in applications requiring quick shut-off and are known for their ability to provide a tight seal, which is crucial in preventing leaks.
Applications
Ductile iron plug valves are versatile and can be used in a variety of applications. They are commonly found in petroleum pipelines, chemical processing, and power plants. These valves are suitable for handling gas and liquid fuels, as well as extreme temperature flows such as boiler feed water and condensate. Additionally, they are effective in regulating the flow of liquids containing suspended solids, such as slurries.
Advantages over other Plug Valves
One of the main advantages of ductile iron plug valves is their robust construction, which provides a long service life and high reliability. They are particularly advantageous in chemical environments due to their strong impermeability and ability to be lined for enhanced corrosion resistance. The integrated top installation design of these valves simplifies maintenance and ensures a tight shutoff with zero leakage.
Limitations
A notable limitation of ductile iron plug valves is the increased torque requirement due to their surface seal design. This can lead to higher operational costs, especially when pneumatic actuators are used, as they require more power compared to ball valves. Additionally, improper selection or design of sleeve materials can cause issues such as sleeve expansion, which increases the valve torque significantly.
Considerations
When considering ductile iron plug valves, it is important to evaluate the initial costs, which can be higher due to their robust construction and material requirements. Operating expenses may also be elevated due to the higher torque requirements. However, their durability and reliability can offset these costs over time. Maintenance and replacement costs are generally low due to the simple design and ease of access for repairs. It is crucial to ensure that the valve materials are compatible with the specific media and environmental conditions to prevent corrosion and ensure long-term performance.
from Assured Automation
Description: The 061 is a PFA lined, Ductile Iron, ANSI Class 150 flanged Plug Valve It can be equipped with a manual handle or with pneumatic or electric actuators. A full range of accessory items are available including limit switches, solenoid valves, positioners and manual override devices. [See More]
- Material Of Construction: Ductile Iron; PTFE
- Maximum Pressure: 250.00
- Valve Size: 0.50 to 4.00
- Number of Ports: 2
from McWane Plant and Industrial
Features & Benefits. V-Type Packing - Buna-N (NBR) V-Type packing is field adjustable and replaceable under pressure. Stem Bearings - Heavy-duty 316 Stainless Steel permanently lubricated bearings on upper and lower plug journals provide ease of operation even after long periods of inactivity. [See More]
- Material Of Construction: Ductile Iron; ASTM A536 65-45-12 Ductile Iron
- Connection Description: BoltFlange; Flanged, Mechanical Joint
- Valve Size: 3.00 to 48.00
- Actuation: Electric; Pneumatic; Direct Nut, Worm Gear, Electric, Hydraulic, Pneumatic
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]
- Material Of Construction: Brass / Bronze; Ductile Iron; Stainless Steel; Exotic Metal
- Number of Ports: 2
- Valve Size: 0.50
- Connection Description: BoltFlange; Flanged Connection
from Victaulic Co. of America
Conforms to AWWA C-509 standard for end-to-end dimensions. Round port provides better flow and allows easier passage of cleaning pigs. Sizes from 3 - 12 ″ | DN80 - DN300. Pressures up to 175 psi | 1207 kPa | 12 bar [See More]
- Material Of Construction: Ductile Iron
- Maximum Pressure: 175.00
- Valve Size: 3.00 to 12.00
- Connection Description: Grooved Ends
from Flomatic Valves
Flo-E-Centric ® Plug Valve with Gear Box Model 54-0 (Direct Mounted) - ANSI B16.1, class 150 Ductile iron Body ASTM A536 65-45-12. Epoxy coated, Buna-N Plug, V-Type Packing, Self Lubricating Type 316 Stainless Steel thrust bearing. For reference use only. Please check Flomatic's website for the... [See More]
- Material Of Construction: Ductile Iron
- Maximum Pressure: 200.00
- Valve Size: 3.00 to 12.00
- Media Temperature: 180
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]
- Material Of Construction: Brass / Bronze; Ductile Iron; Stainless Steel; Exotic Metal
- Number of Ports: 2
- Valve Size: 0.50
- Connection Description: BoltFlange; Flanged Connection
from Victaulic Co. of America
Only eccentric grooved end plug valve made specifically for throttling services. Available without handle, with lever operator or gear operator. Sizes from 3 - 12 ″ | DN80 - DN300 [See More]
- Material Of Construction: Ductile Iron
- Maximum Pressure: 175.00
- Valve Size: 3.00 to 12.00
- Connection Description: Grooved Ends
from Flomatic Valves
Flo-E-Centric ® MJ Plug with buried service gear Series 5400 valves are Ductile iron Body Epoxy coated, Buna-N Plug, V-Type Packing, Self Lubricating Type 316 Stainless Steel thrust bearing. PRESSURE MAX: 4 ” - 12 ” 200 PSI. PRESSURE MAX: 14 ” - 24 ” 150 PSI. For... [See More]
- Material Of Construction: Ductile Iron
- Maximum Pressure: 200.00
- Valve Size: 4.00 to 24.00
- Media Temperature: 180
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]
- Material Of Construction: Brass / Bronze; Ductile Iron; Stainless Steel; Exotic Metal
- Number of Ports: 2
- Valve Size: 0.50
- Connection Description: BoltFlange; Flanged Connection
from Flomatic Valves
Flo-E-Centric ® Plug Valve with 2" AWWA Operating Nut Model 54-4 - ANSI B16.1, class 150 Ductile iron Body ASTM A536 65-45-12. Epoxy coated, Buna-N Plug, V-Type Packing, Self Lubricating Type 316 Stainless Steel thrust bearing. For reference use only. Please check Flomatic's website for the... [See More]
- Material Of Construction: Ductile Iron
- Maximum Pressure: 200.00
- Valve Size: 2.00 to 8.00
- Media Temperature: 180
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]
- Material Of Construction: Brass / Bronze; Ductile Iron; Stainless Steel; Exotic Metal
- Number of Ports: 2
- Valve Size: 0.50
- Connection Description: BoltFlange; Flanged Connection
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]
- Material Of Construction: Ductile Iron
- Number of Ports: 2
- Valve Size: 0.50
- Connection Description: BoltFlange; Flanged Connection
from XOMOX (A Crane Co. Company)
Xomox offers a wide range of plug valves to meet your needs. Sizes range from 1/2" to 24" and end connections include screwed, weld, flanged. See below for our list of comprehensive offerings. [See More]
- Material Of Construction: Brass / Bronze; Ductile Iron; Stainless Steel; Exotic Metal
- Number of Ports: 2
- Valve Size: 0.50
- Connection Description: BoltFlange; Flanged Connection