Knife gate valve are named for its sharp, knifelike disc, which could be used for cutting medium. Knife gate valves are mainly designed for systems with high contents of suspended solids and. Knife gate valve leader in the manufacturing of knife gate valves, tecofi has a comprehensive range able to respond to all needs and applications. Do you need a heavy duty knife gate valve designed for highly abrasive applications. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. Pratt knife gates pratt industrial, emporia, kansas. Once a knife gates seals wear, they start to leak and must be replaced. Large stock daily shipments seal class 6 product adaptation to customer needs maintenance service spare parts in stock testbed knife gate valve cl range. Typical problems with knife gate valves biseal australia. Discover the benefits of delta industrial knife gate valves. F8115 cast iron knife gate valve available in lug type and wafer type designs. Mar 21, 2019 the gate valve is a linear actuating valve used as flow isolater in a fluid pipeline. The seats on the knife gate valve come in everything from metal to resilient types.
To see availability for this product, create an account. Fabri valve c37 150 psi 317l stainless steel head knife gate valve. Built with heavy duty body and yoke to prevent bending or twisting under extreme loads. A knife gate valve is a device that regulates the flow of any liquid by opening, closing or partially opening, to control the pressure. These valves including resilient seat option are typically used in the following applications. This valve is mainly used for viscous products as the gate has a sharp edge thanks to an external chamfer. As the name says the gate valve, a flat circular or rectangular plate acts as a gate in a pipeline. Pneumatic resilient seat knife gate valve stainless steel dn50dn600 model kgv99kgcl.
It has a sharp edge on the bottom of the gate to shear particulates or other solids in suspension as well as to separate slurry. Knifegate valves are manufactured with a high wear resistant cast urethane seat and wear area for excellent performance in slurry applications. Fabricated steel body construction for durability and economy. Knife valves are a specific type of parallel gate valve. Guest articles, online test, software, how it works, process fundamentals, videos, instrumentation tools. Other options include limit switches, solenoid valves and bonnets. The curtisswright valve group offers a wide selection of gate valves from phonix and strack for a number of purposes within several industries. Knife gate valve version zfi m knife gate valve version zfi s zero velocity valve and air cushion valves are used for control of transient, surges or water hammer in the pumping mains using the prevention of water learn more.
The slide gates hard polymer seals compensate for wear unlike the knife gate. Ductile iron knife gate valve valtorc international usa. Feel free to call biseal if you need assistance with. Gate valves selection guide engineering360 globalspec. Bray series 770 bidirectional oported slide gate valves are designed for severe service applications. Knife gate valves can be made from various materials covering cast iron, carbon steel, alloy steel and.
Red valve s knife gate valves are the perfect compliment to our broad range of slurry handling products. Standard features such as precisionmachines gates, heavyduty top works and castiron bodies up to 24 make the. Fnw figure 61b ductile iron and 316l stainless steel flanged knife gate valve. The slide gate valve also selfcleans material from the seat on each stroke of the slide plate to prevent bridging or packing of material. With a knife gate lying on its side, the gate needs supporting as the packing is pressed by the weight of the gate on the gravity side. Animation about the features of our knife gate valves series 702. Environmentally friendly bidirectional bolted bonnet.
Full line of customer square and rectangular knife gates that can be fabricated in 34 weeks where others are 810 weeks or even more. The heavy duty cast ductile iron body knife gate valve is available with side flanges for easy bolt on installation. Knife gate valve options 11 knife gate valve seating technology and design details 12 actuators, seat maintenance, and engineering data. The valve is equipped with a throughgoing gate for secure bidirectional shutoff of concentrated and static media. When the valve actuates down the gate slice the fluid to total shut off. Want to know more about the features of avk knife gate valves. A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier gate out of the path of the fluid. Knife gate valve wafer knife gate valve, flange knife. F65f67 fabricated metal seated knife gate valve the figure f65f67 fabricated knife gate valve is modeled after the figure 65b with lockout lugs and 67b without lockout lugs cast body valves. Knife gate valve are named for its sharp, knife like disc, which could be used for cutting medium. When the valve actuates down the gate slice the fluid to.
Bidirectional knife gate valve high pressure slurry. Experience zero leaks with a true knife gate valve for many years, plant operators have battled with leakage problems, searching for valves which will isolate the flow and prevent leaks to the atmosphere, but are often left feeling frustrated and out of pocket. Basics of gate valves valve study material instrumentation tools. Badentoy road,badentoy business park,portlethen,aberdeenshire,ab16 5ya tel. March 2020 page 3 d11040 piston rod clip gate figure 1.
Available in sizes 2 through 24 available in cast stainless steel, stainless steel lined. The wb valve has a coated valve body in nodular iron with integrated. Series g knife gate valves can be fitted with a variety of actuators, including standard handwheel, bevel gear, pneumatic actuators, hydraulic actuators, electric actuators and chainwheel actuators. Twin elastomer seats and pushthrough gate design facilitate selfcleaning and prevent media build up. The doubleseated design provides bidirectional shut off.
The vg model knife gate is a wafer valve designed for a wide range of industrial applications. Want to know more about the features of the avk knife gate valve. Keckley manufactures knife gate valves for applications such as pulp and paper, chemical, petrochemical, power, mining, waste water and more. Vaas bidirectional knife gate valve for general service, water and sewage applications, full bore, fully lugged body design to table d, rising stem, 316ss body, 304316ss plated gate, 304ss stem, epdm seat oring cord design for bubble tight shutoff, hand wheel operated. The valve seat face is protected by the gate when the valve is in the full open position, providing longer service life under adverse conditions. The gate valve is a linear actuating valve used as flow isolater in a fluid pipeline. Gate valves also known as knife valves or slide valves are linear motion valves. Gate valves also known as knife valves or slide valves are linear motion valves in which a flat closure element slides into the flow stream to provide shutoff. Therefore, the arrow indicates which side the valve seats. These specially designed valves are fully customizable to meet any specification. In order for the valve to seat properly and seal without leaking, pressure must be placed on the correct side of the valve. Series g knife gate valve 2o 1 78o 6 12o 3 14o 11o o 8o 150 23.
Two of the knife gates biggest advantages knife are weight. The bray series 752 bidirectional knife gate valve features a robust steel reinforced perimeter seat which provides bidirectional zero leakage shutoff. Our staff has many years of combined experience in building knife gate valves in particular. It is one of the simplest valve designs, and with only one moving part, the preventative maintenance schedule is straightforward. We have both resilent and metal seated versions in sizes from dn 50 50 mm to dn 1200 1. Series 770 bidirectional oported slide gate valve, knife gate valve. Whats the difference between a knife gate and a slide gate. Knife gate valves process systems knife gate valves are available in ductle iron and stainless steel, including semi lugged or fully lugged body with an open shroud or bonnet. The groove around the seat permits the gate to push particles aside and prevents clogging.
Our knife gate valves provides a low pressure drop across the valve and is better suited to handle slurries, solids, and other fluidsolid mixtures than average plug valves, butterfly valves, or ball valves. Knife gate valves henry pratt company valve manufacturer. Pressure in the cylinders can cause personal injury or equipment damage. Two of the knife gate s biggest advantages knife are weight. In a majority of knife gate valve designs, the temperature limit or the chemical compatibility of the seat and or packing material determines the practical pressuretemperature limitations. Its also unidirectional though bidirectional is an option on some, and comes in either wafer or lugged body, no flanges. Red valves knife gate valves are the perfect compliment to our broad range of slurry handling products. The knife gate valve, also known as slurry gate valve, is a special parallel gate valve that is designed to handle slurry, including fibrous material.
Get a tour around our factory and watch videos and animations about our gate valves, butterfly valves, check valves, knife gate valves, control valves, pe ball valves, supa maxi universal tensile couplings, supa lock threadless connection system, hydrants, post indicators and accessories. These valves were designed to work in some of the most corrosive, erosive and abrasive environments in the world. Replaceable natural rubber seats provide a bidirectional movement and bubble tight seal. Biseal have manufactured and supplied knife gate and a range of other valves slide gate, oport, butterfly, plug valve to the mining and general industry. Watch our video to discover the advantages of delta. It shows you the twopart body with ushaped reinforced sealing, how it allows flow from both sides, the. The durable ductile iron body is offered in a twopiece bolted wafer style. These highquality metalseated knife gate valves, with ground knife gates and lapped seating faces. Seat is flush with the bottom of the valve port, eliminating pockets in the bottom of the valve. If you want to install a knife gate valve, this article will make your life much easier, by giving you a stepbystep tutorial on how the job can be done systematically. Knife gate valves are usually used for pulppaper and mining industries knife gate valves are named for its sharp, knifelike disc, which could be used for cutting medium. A knife gate valve is a component that utilizes a blade to cut through clogging of heavy liquids.
Knife gate valves were originally designed for the pulp and paper industry. The design of the valve body and the two rubber sleeves makes the vg valve suited for use in handling abrasive slurries in industries such as. A knife gate valve has a gate that moves up and down, and a seat on one side. Knife gate valves are usually used for pulppaper and mining industries knife gate valves are named for its sharp, knife like disc, which could be used for cutting medium. Knife gate valve wb stafsjos knife gate valve wb is bidirectional tight and has a cavity free full bore with superior flow characteristics. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and. Avk videos valves, hydrants and accessories avk international.
Gate valve is a linear actuating valve used as flow isolater in a fluid pipeline. Stringy pulp would get stuck between the wedge and the seat of a normal gate valve and prevent flow shutoff. A knife gate has a very thin profile compared to its bulkier counterpart. It is regulated by a rectangular or round gate, obstructing the liquid flow when closed. Knife gate valves are used to provide isolation in various applications including oil sands slurries, pulp stock, waste water and power generation. We specialize in custom knife gate valves from 2 to 96 and above, utilizing carbon steel to stainless steels and other weldable alloys.
Seat is outside the flow area resulting in higher flow coefficient with minimum pressure drop. Jun 24, 2016 want to know more about the features of avk knife gate valves. Available for grooved steelstainless steel and plain end hdpe manual, pneumatic, hydraulic. Get a tour around our factory and watch videos and animations about our gate valves, butterfly valves, check valves, knife gate valves, control valves, pe ball. This shutoff performance, along with its flow characteristics, makes it.
Knife gate valve, china knife gate valve manufacturer. Meet the industrys first inline maintenance knife gate valves. Pratt knife gate and slide gate valves have been produced since 1995. The valve is suitable for fluids, sludge and liquids with solids in suspensions such as water, waste water and bio mass. Environmentally friendly bidirectional bolted bonnet and standard body styles. The gate faces can be parallel but are most commonly wedgeshaped in order to be able to apply pressure on the sealing surface. We manufactures knife gate valves for light to heavy slurry service in the mining and mineral processing, power, pulp and paper, waste water and chemical.
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