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Introducing our professional-grade Cast Steel CF8 DN150 PN16 RF Flange Knife Gate Valve With Handwheel. Crafted with high-quality CF8 material, this valve guarantees durability and longevity in various industrial applications.
Nominal Diameter: DN150
Bore: Full Bore
Nominal Pressure: PN16
Material: CF8
Operation: Handwheel
Design Standard: API600/API602/API6D
Test/Inspection: API598
End Connection: RF Flange
Flange standard: EN1092-1,ASME/ANSI B16.5
Top Flange: ISO5210 /ISO5211
For added convenience, our Cast Steel CF8 DN150 PN16 RF Flange Knife Gate Valve features a top flange that adheres to ISO5210 and ISO5211 standards. This enables easy mounting of electric or pneumatic actuators, providing you with the flexibility to automate the valve's operation according to your specific needs.
Choose our Cast Steel CF8 DN150 PN16 RF Flange Knife Gate Valve With Handwheel for a reliable and efficient solution in your industrial processes. With its professional-grade construction, exceptional performance, and versatile design, this valve is sure to exceed your expectations.
What Is a Gate Valve?
A sluice valve, which is also called a gate valve, is a type of valve that opens by raising a barrier (gate) to allow the fluid to pass through. Gate valves take up minimal space along the pipe and do not significantly impede the flow of fluid when fully open. The gate surfaces can be either parallel or wedge-shaped, with the latter design allowing for better sealing by applying pressure.
How Does a Gate Valve Work?
Gate valves are primarily used to stop the flow of liquids, as opposed to regulating the flow, which is typically done with a globe valve. When fully open, a gate valve allows for unobstructed flow, resulting in minimal resistance. The size of the flow path changes in a non-linear manner as the gate is moved, meaning that the flow rate does not change consistently with the movement of the stem. Depending on the design, a partially open gate may vibrate due to the fluid flow.
Gate valves are commonly used in larger pipe diameters (ranging from 2" to the largest pipelines) because they are simpler to construct compared to other valve types in larger sizes.
At high pressures, friction can pose a challenge. The pressure of the medium pushes the gate against its guiding rail, making it more difficult to operate the valve. In some cases, larger gate valves are equipped with a bypass that is controlled by a smaller valve, allowing for pressure reduction before operating the gate valve itself.
Gate valves that do not have an additional sealing ring on the gate or the seat are used in applications where minor leakage is not a concern, such as heating circuits or sewer pipes.
Gate Valve Construction:
Gate valves are operated by a stem that is connected to an actuator, such as a handwheel or motor. These valves can have either a rising or nonrising stem, depending on where the threading is located. Rising stems are connected to the gate and move up and down together when the valve is operated, allowing for a visual indication of the valve's position. The actuator is connected to a nut that rotates around the threaded stem to move it. Nonrising stem valves are connected to the actuator and rotate with it, with the threading going into the gate. These valves may have a pointer attached to the stem to show the valve's position, as the gate's movement is hidden inside the valve. Nonrising stems are used in situations where there is limited vertical space.
Gate valves can have flanged ends that are drilled according to the standards of compatible pipeline flanges. They are commonly made from materials such as cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels, and forged steels.
In ultra-high vacuum chambers, all-metal gate valves are used to separate different regions of the chamber.
Bonnet
Valve bodies are effectively sealed by bonnets, ensuring no leaks occur. Screw-in, union, or bolted bonnets can be found on gate valves. The simplest option is the screw-in bonnet, which provides a strong and reliable seal. For applications that require regular inspection and cleaning, a union bonnet is recommended. This type of bonnet also enhances the strength of the valve body. On the other hand, bolted bonnets are utilized for larger valves and situations involving higher pressure.
Pressure seal bonnet
A different kind of bonnet design found in gate valves is called pressure seal bonnet. This design is used for valves that handle high pressure situations, usually over 2250 psi (15 MPa). What sets the pressure seal bonnet apart is that it has a cup-shaped end that fits into the valve body. When the pressure inside the valve rises, the cup expands outward, creating a better seal between the body and the bonnet. Other designs that rely on external clamping pressure often result in leaks at the joint between the body and the bonnet.
Knife gate valve
A specialized valve called a knife gate valve is utilized to halt the movement of plastic solids and thick slurries like paper pulp by slicing through them. Unlike wedge-shaped valves, a knife gate valve features a tapered knife-like edge on its lower surface.
Types of Gate Valves
Wedge Gate Valve: This valve is a popular choice due to its wedge-shaped gate, which prevents sticking and ensures long-lasting performance.
Knife Gate Valve
These valves are named for their sharpness and are highly effective in handling thick fluids, as they are self-cleaning.
Through-Conduit Gate Valve
Also referred to as slab gates, this type of valve is particularly suitable for natural gas and crude oil applications, as it minimizes pressure loss.
Parallel Slide Gate Valve
Designed for high-temperature environments, this valve excels at preventing dirt from entering the seating surfaces.
Parallel Expanding Gate Valve
While not suitable for household plumbing, this valve is perfect for heavy-duty tasks in power plants and refineries.
Electric actuators Gate Valve
Electric actuators can be customized to fit the specific needs of the gate valve and can be powered by three-phase current, alternating current, or direct current. Despite their high initial cost, they offer a prolonged lifespan and require minimal maintenance (easy to install, no energy usage when not in operation, simple upkeep). The switching durations can be flexibly adjusted to match the intended use, ranging from around 20 seconds to several minutes.
Pneumatic actuators Gate Valve
These devices function using compressed air, are more cost-effective than electric drives, have quick switching times, and are simple to upkeep. Nevertheless, they necessitate a compressed air supply line and a solenoid valve for control. There are two types of pneumatic actuators: double-acting and single-acting. Double-acting actuators need compressed air to both open and close the gate. On the other hand, single-acting actuators require compressed air for either opening or closing. In the case of single-acting actuators, the reset is automatic through a spring mechanism.
Hydraulic actuators Gate Valve
The same principle as pneumatic actuators. However, these actuators are operated with oil or water-based fluids (flame retardant).
Remotely operated gate valves
In certain situations, gate valves may not be easily operated at the location where they are installed. For example, if they are placed in a pit, underwater, or in the ground. In such cases, they can be manually operated using a drive linkage or spindle extension. Alternatively, they can be operated using an electric, pneumatic, or hydraulic drive. Depending on the conditions at the site, it might be necessary to install extra diverters with multiple cardan or ball joints. Additionally, a corridor column with a handwheel or drive may be required.
Knife Gate Valves Collection：
Knife gate valves are stainless steel gate valves that have a sharp cutting tool installed to deal with viscous, heavy liquids, or other abrasive media. Their straightforward design and easy-to-manipulate valve setup are ideal for wastewater treatment plants, cement plants, and mining facilities, to name a few.
With dedicated workshops and superior mold casting capabilities, DomBor is sure to meet your knife gate valve needs. Carefully selected materials and contemporary design make our knife gate valves highly resistant to acid and corrosion brought by the viscous materials. The steel blade that cuts through the solid or heavy materials is specifically manufactured to retain its sharp edge for an extended period.
Knife Gate Valves Highlights
Easily automated for on/off applications
One-piece body
Position Indicator
Standard wafer and lug design
Knife gate has a strong shear force
Main Features of Knife Gate Valves：
Easily and quickly switch between manual and pneumatic
Knife gate valve adopts integral structure, ultra-thin valve body, full diameter flow channel. To a large extent, it can avoid medium leakage, flow loss, cost saving, and easy to install and use.
The valve adopts the design of replaceable seat (non-native seal). Only the seat needs to be replaced after the sealing surface is worn, which facilitates the later maintenance of the valve and prolongs the service time of the whole valve, thus reducing the equipment cost of customers
The bottom of the ram is designed with a knife shaped arc, so the ram has a strong shearing effect on the medium and excellent sealing effect when it moves. It is especially suitable for the control of pulp and media containing fiber
The double bearing design reduces the torque of the valve and facilitates the opening and closing of the valve.
The bracket is made of stainless steel instead of chrome plated carbon steel, with longer service life
Knife Gate Valves Applications
Power, Mining, Pulp & Paper, Cement, Carbon Black, Chemical,Wastewater
Knife Gate Valves Technical Specifications
Size Range: 2″-48″(50mm-1200mm)
Temperature Range: -29 to 180 degree
Pressure Ratings: 2 – 24″ (50 – 600mm) 150psi / 30 – 36″ (750 – 1200mm) 100psi
Disc Materials: Stainless Steel,Hastelloy C, Monel,etc
Design Standard: MSS SP-81，ASME B16.34
Testing Standard: MSS SP-151
Face to Face: MSS SP-81
Applications: Power, Mining, Pulp & Paper, Cement, Carbon Black, Chemical,Wastewater
Body Materials: Cast Iron, Ductile Iron, Carbon Steel,Stainless Steel,Nickel Aluminum Bronze,etc
Shutoff Rating: Bidirectional or Unidirectional,Soft seated (zero Leak)metal seated(MSS SP-151)
Flange Drilling: ASME B16.5、EN 1092、GOST 33259
Certifications: CE、EAC、SIL3、ISO 19001
Operation: Wench, Worm Gear, Electric, Pneumatic,etc
Introducing our professional-grade Cast Steel CF8 DN150 PN16 RF Flange Knife Gate Valve With Handwheel. Crafted with high-quality CF8 material, this valve guarantees durability and longevity in various industrial applications.
Nominal Diameter: DN150
Bore: Full Bore
Nominal Pressure: PN16
Material: CF8
Operation: Handwheel
Design Standard: API600/API602/API6D
Test/Inspection: API598
End Connection: RF Flange
Flange standard: EN1092-1,ASME/ANSI B16.5
Top Flange: ISO5210 /ISO5211
For added convenience, our Cast Steel CF8 DN150 PN16 RF Flange Knife Gate Valve features a top flange that adheres to ISO5210 and ISO5211 standards. This enables easy mounting of electric or pneumatic actuators, providing you with the flexibility to automate the valve's operation according to your specific needs.
Choose our Cast Steel CF8 DN150 PN16 RF Flange Knife Gate Valve With Handwheel for a reliable and efficient solution in your industrial processes. With its professional-grade construction, exceptional performance, and versatile design, this valve is sure to exceed your expectations.
What Is a Gate Valve?
A sluice valve, which is also called a gate valve, is a type of valve that opens by raising a barrier (gate) to allow the fluid to pass through. Gate valves take up minimal space along the pipe and do not significantly impede the flow of fluid when fully open. The gate surfaces can be either parallel or wedge-shaped, with the latter design allowing for better sealing by applying pressure.
How Does a Gate Valve Work?
Gate valves are primarily used to stop the flow of liquids, as opposed to regulating the flow, which is typically done with a globe valve. When fully open, a gate valve allows for unobstructed flow, resulting in minimal resistance. The size of the flow path changes in a non-linear manner as the gate is moved, meaning that the flow rate does not change consistently with the movement of the stem. Depending on the design, a partially open gate may vibrate due to the fluid flow.
Gate valves are commonly used in larger pipe diameters (ranging from 2" to the largest pipelines) because they are simpler to construct compared to other valve types in larger sizes.
At high pressures, friction can pose a challenge. The pressure of the medium pushes the gate against its guiding rail, making it more difficult to operate the valve. In some cases, larger gate valves are equipped with a bypass that is controlled by a smaller valve, allowing for pressure reduction before operating the gate valve itself.
Gate valves that do not have an additional sealing ring on the gate or the seat are used in applications where minor leakage is not a concern, such as heating circuits or sewer pipes.
Gate Valve Construction:
Gate valves are operated by a stem that is connected to an actuator, such as a handwheel or motor. These valves can have either a rising or nonrising stem, depending on where the threading is located. Rising stems are connected to the gate and move up and down together when the valve is operated, allowing for a visual indication of the valve's position. The actuator is connected to a nut that rotates around the threaded stem to move it. Nonrising stem valves are connected to the actuator and rotate with it, with the threading going into the gate. These valves may have a pointer attached to the stem to show the valve's position, as the gate's movement is hidden inside the valve. Nonrising stems are used in situations where there is limited vertical space.
Gate valves can have flanged ends that are drilled according to the standards of compatible pipeline flanges. They are commonly made from materials such as cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels, and forged steels.
In ultra-high vacuum chambers, all-metal gate valves are used to separate different regions of the chamber.
Bonnet
Valve bodies are effectively sealed by bonnets, ensuring no leaks occur. Screw-in, union, or bolted bonnets can be found on gate valves. The simplest option is the screw-in bonnet, which provides a strong and reliable seal. For applications that require regular inspection and cleaning, a union bonnet is recommended. This type of bonnet also enhances the strength of the valve body. On the other hand, bolted bonnets are utilized for larger valves and situations involving higher pressure.
Pressure seal bonnet
A different kind of bonnet design found in gate valves is called pressure seal bonnet. This design is used for valves that handle high pressure situations, usually over 2250 psi (15 MPa). What sets the pressure seal bonnet apart is that it has a cup-shaped end that fits into the valve body. When the pressure inside the valve rises, the cup expands outward, creating a better seal between the body and the bonnet. Other designs that rely on external clamping pressure often result in leaks at the joint between the body and the bonnet.
Knife gate valve
A specialized valve called a knife gate valve is utilized to halt the movement of plastic solids and thick slurries like paper pulp by slicing through them. Unlike wedge-shaped valves, a knife gate valve features a tapered knife-like edge on its lower surface.
Types of Gate Valves
Wedge Gate Valve: This valve is a popular choice due to its wedge-shaped gate, which prevents sticking and ensures long-lasting performance.
Knife Gate Valve
These valves are named for their sharpness and are highly effective in handling thick fluids, as they are self-cleaning.
Through-Conduit Gate Valve
Also referred to as slab gates, this type of valve is particularly suitable for natural gas and crude oil applications, as it minimizes pressure loss.
Parallel Slide Gate Valve
Designed for high-temperature environments, this valve excels at preventing dirt from entering the seating surfaces.
Parallel Expanding Gate Valve
While not suitable for household plumbing, this valve is perfect for heavy-duty tasks in power plants and refineries.
Electric actuators Gate Valve
Electric actuators can be customized to fit the specific needs of the gate valve and can be powered by three-phase current, alternating current, or direct current. Despite their high initial cost, they offer a prolonged lifespan and require minimal maintenance (easy to install, no energy usage when not in operation, simple upkeep). The switching durations can be flexibly adjusted to match the intended use, ranging from around 20 seconds to several minutes.
Pneumatic actuators Gate Valve
These devices function using compressed air, are more cost-effective than electric drives, have quick switching times, and are simple to upkeep. Nevertheless, they necessitate a compressed air supply line and a solenoid valve for control. There are two types of pneumatic actuators: double-acting and single-acting. Double-acting actuators need compressed air to both open and close the gate. On the other hand, single-acting actuators require compressed air for either opening or closing. In the case of single-acting actuators, the reset is automatic through a spring mechanism.
Hydraulic actuators Gate Valve
The same principle as pneumatic actuators. However, these actuators are operated with oil or water-based fluids (flame retardant).
Remotely operated gate valves
In certain situations, gate valves may not be easily operated at the location where they are installed. For example, if they are placed in a pit, underwater, or in the ground. In such cases, they can be manually operated using a drive linkage or spindle extension. Alternatively, they can be operated using an electric, pneumatic, or hydraulic drive. Depending on the conditions at the site, it might be necessary to install extra diverters with multiple cardan or ball joints. Additionally, a corridor column with a handwheel or drive may be required.
Knife Gate Valves Collection：
Knife gate valves are stainless steel gate valves that have a sharp cutting tool installed to deal with viscous, heavy liquids, or other abrasive media. Their straightforward design and easy-to-manipulate valve setup are ideal for wastewater treatment plants, cement plants, and mining facilities, to name a few.
With dedicated workshops and superior mold casting capabilities, DomBor is sure to meet your knife gate valve needs. Carefully selected materials and contemporary design make our knife gate valves highly resistant to acid and corrosion brought by the viscous materials. The steel blade that cuts through the solid or heavy materials is specifically manufactured to retain its sharp edge for an extended period.
Knife Gate Valves Highlights
Easily automated for on/off applications
One-piece body
Position Indicator
Standard wafer and lug design
Knife gate has a strong shear force
Main Features of Knife Gate Valves：
Easily and quickly switch between manual and pneumatic
Knife gate valve adopts integral structure, ultra-thin valve body, full diameter flow channel. To a large extent, it can avoid medium leakage, flow loss, cost saving, and easy to install and use.
The valve adopts the design of replaceable seat (non-native seal). Only the seat needs to be replaced after the sealing surface is worn, which facilitates the later maintenance of the valve and prolongs the service time of the whole valve, thus reducing the equipment cost of customers
The bottom of the ram is designed with a knife shaped arc, so the ram has a strong shearing effect on the medium and excellent sealing effect when it moves. It is especially suitable for the control of pulp and media containing fiber
The double bearing design reduces the torque of the valve and facilitates the opening and closing of the valve.
The bracket is made of stainless steel instead of chrome plated carbon steel, with longer service life
Knife Gate Valves Applications
Power, Mining, Pulp & Paper, Cement, Carbon Black, Chemical,Wastewater
Knife Gate Valves Technical Specifications
Size Range: 2″-48″(50mm-1200mm)
Temperature Range: -29 to 180 degree
Pressure Ratings: 2 – 24″ (50 – 600mm) 150psi / 30 – 36″ (750 – 1200mm) 100psi
Disc Materials: Stainless Steel,Hastelloy C, Monel,etc
Design Standard: MSS SP-81，ASME B16.34
Testing Standard: MSS SP-151
Face to Face: MSS SP-81
Applications: Power, Mining, Pulp & Paper, Cement, Carbon Black, Chemical,Wastewater
Body Materials: Cast Iron, Ductile Iron, Carbon Steel,Stainless Steel,Nickel Aluminum Bronze,etc
Shutoff Rating: Bidirectional or Unidirectional,Soft seated (zero Leak)metal seated(MSS SP-151)
Flange Drilling: ASME B16.5、EN 1092、GOST 33259
Certifications: CE、EAC、SIL3、ISO 19001
Operation: Wench, Worm Gear, Electric, Pneumatic,etc
