Electro-hydraulic Air Valves
Description
Electro-hydraulic air valves are devices that control the flow of air using a combination of electrical and hydraulic mechanisms. These valves are designed to provide precise control over air flow, leveraging the strengths of both electrical and hydraulic systems to achieve efficient operation.
Working Principle
Electro-hydraulic air valves operate by using an electrical signal to control a hydraulic actuator, which in turn regulates the air flow through the valve. The hydraulic system provides the force necessary to move the valve components, while the electrical system offers precise control over the valve's operation. This combination allows for high torque and fast-acting control, making these valves particularly useful in applications requiring precision and reliability. The hydraulic fluid in the system is typically stored in a reservoir and recirculated, providing rigidity and precision due to its incompressibility .
Applications
Electro-hydraulic air valves are commonly used in systems where precise control of air flow is critical. Specific examples include pneumatic valve actuators, where they supply the necessary air to control the actuator's movement . These valves are also used in industrial settings where large forces are required to open or close main steam valves .
Advantages over other Air Valves
One of the main advantages of electro-hydraulic air valves is their ability to provide high torque and fast-acting control, which is not always possible with purely pneumatic or electric valves. The precision offered by the hydraulic system, due to the incompressibility of the hydraulic fluid, allows for more accurate control compared to other types of air valves .
Limitations
Electro-hydraulic air valves can be costly and are prone to oil leaks, which require regular maintenance. Additionally, they can be affected by low ambient temperatures if appropriate precautions are not taken .
Considerations
When considering electro-hydraulic air valves, it is important to account for the initial costs, which can be higher than other types of valves due to the complexity of the system. Operating expenses may also be higher due to the need for regular maintenance to prevent and address oil leaks. However, the durability and accuracy provided by the hydraulic system can justify these costs in applications where precision is paramount. Replacement and maintenance costs should also be considered, as the hydraulic components may require more frequent servicing compared to simpler valve systems .
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 3.94
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 248.55
from HR Textron
0.48" port circle, 0.938" x 1.032" bolt pattern, nitrile o-ring standard [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic
- Maximum Pressure: 5000.00
- Valve Type: Servo
- Connection Description: Cartridge
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 4.92
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 262.42
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 2.56
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 124.10
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 3.15
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 154.20
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 3.94
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 223.12
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 4.92
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 255.49
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 2.56
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 113.60
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 3.15
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 141.50
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 0.59
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 6.60
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 0.79
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 10.20
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 0.98
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 15.40
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 1.26
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 23.20
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 1.57
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 35.90
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 1.97
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 49.80
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 0.39
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 2.90
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 3.94
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 162.40
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 4.92
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 229.60
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 5.91
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 317.80
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 11.61
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 522.00
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 13.98
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 754.00
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 1.57
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 35.90
from co-ax valves inc.
Function: pressure balanced 2/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 1.97
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 49.80
from co-ax valves inc.
Function: pressure balanced 3/2 way externally controlled coaxial valves, normally closed and normally open versions. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, aggressive, coolant. Body Materials: aluminum, brass, galvanized steel, nickel plated brass, nickel plated... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 0.39
- Valve Type: Injection; Control Valve; Diverter; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 2.90
from co-ax valves inc.
Function: pressure balanced 2/2 or 3/2 way cartridge valves externally controlled or direct acting, normally closed version. Media: gaseous, liquid, gelatinous, highly viscous, pasty, contaminated, abrasive. Body Materials: aluminum, brass, stainless steel. Options: valve body, limit switches,... [See More]
- Actuation: ElectroHydraulic; ElectroPneumatic; Pilot; Pneumatic
- Valve Size: 0.39
- Valve Type: Injection; Control Valve; Drain; Hydraulic; Metering; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 3.40
from co-ax valves inc.
Function: pressure balanced 2/2 or 3/2 way coaxial valves externally controlled or direct acting, normally closed and normally open versions. Media: gaseous, liquid. Body Material: brass, nickel plated brass, stainless steel. Options: special threads, mounting, special voltage, plug M 12 x 1,... [See More]
- Actuation: ElectroHydraulic
- Valve Size: 0.06 to 0.12
- Valve Type: Injection; Solenoid; Control Valve; Drain; Hydraulic; Mixing; Shut Off; Coaxial Valve
- Flow (Cv): 0.00 to 0.36