A Complete Guide To Gate Valve The gate valve is the most common shut-off valve. Unlike ball valves, they are not quarter-turn devices; instead, they close and open through revolutions of the hand wheel. Used in wastewater plants, power plants and process systems, the threaded system of the gate valves give them an advantage over the quarter turn system of the ball and butterfly valve in large applications. Fluid through gate valves experiences only minimal pressure drop as gate valves allow total flow through its passage when fully open. This post discusses the functions, symbols, advantages and disadvantages, types, and other essential things you need to know about the gate valve. What is A Gate Valve? Gate valves can also be called sluice valves or knife valves. They are control valves that allow or restrict the flow of media completely. Gate valves use a flat gate to close off flow between pipe flanges. A gate valve, being a full port valve, has an equal diameter to the pipe through which the fluid passes. Hence, unlike butterfly valves, gate valves minimise pressure losses in the fluid when fully open. Also, because of the equal pipe and valve diameters, gate valves allow for the movement of pigs within the pipe for cleaning and inspection operations. While butterfly valves can be used in flow regulation and on-off services, gate valves should only be used in on-off services as blocking valves and also to allow fluid flow. They should not be used in throttling. Because of their uncomplicated construction and capability to be used in different low-pressure applications, gate valves are one of the most common valves in the industry. Gate Valve Symbol The gate valve symbol is composed of two triangles meeting at a point. A vertical line is inserted between the triangles, and solid horizontal lines extend from the opposite sides of the triangle. The vertical line indicates the blocking operation of the gate valve, and the horizontal lines show that the valve has a two-way function in on-off applications. The gate valve symbol used in piping and instrumentation diagrams (P&ID) is a modification of the valve symbol, which is the gate valve symbol without the vertical line between the triangles. The three isometric symbols in the diagram indicate symbols for butt-welding end connections, flanged ends, and socket ends connections.
We make customized rolling, sliding gates, collapsible gates for home, commercial building factories etc. These gates come in Aluminum, Stainless Steel or in Steel. The surface is powder coated to last many years after installation. These gates can be installed on tracks or without tracks. Every aspect of the gates can be customized. These gates are easy to operate with minimal effort. Our standard dimensions Height 1600mm (height can customized) Stretching ratio: 1:0.17 + 0.42 (can be customized) Gate Minimum length :2 Meters Gate Maximum length: upto 90 meters ( double Gates) Operation: Hand operated, Motorized. Colors available: Blue, Red (colors can be customized) Please contact us for competitive pricing.
Brass & PVC Gate Valve
We produce various screw according to customers' specfication. Material can be steel, stainless steel or brass.
Material: high carbon spring steel, spring steel, stainless steel, alloy steel Compression Spring, Extension Spring : Wire Diameter: 0.2-40.0mm Torsion spring wire diameter :0.2-35mm Surface Finish: black , Zinc, Nickel, silver, golden, tin, powder coating, shot pin Applications: Automotive, medical device, agricultural machinery ,electronics, toy, electric power distribution. Extension spring hook include Germany hook, British hook, Side hook We can customize special design of springs based on your requirement.
Gate & Globe Valves, Ball Valves and Manifold
Screw
Screw
Pvc doors, doors with mdf molded door skins- with grains, white enamel painted, melamine faced, natural wood veneer, artificial veneer. Steel security doors. Flush doors Solid wooden doors with: oak, red cherry, sapelli, golden teak, merbau, walnut, rosewood, teak etc. Various panel designs. Door with frame. Moulds (casing).
Led bulb, tube light, panel light, decoration light, wall light, steel wires, steel plate, stainless steel plate, twisted wire rods, galvanized wires, wire mesh, site fencing, mosquito mesh, thread rods, rebar, twisted rods, t bar, nuts and bolts, hardware, pvc pipes, upvc pipes, api pipes, melamine, mdf board, plywood, film faced, shuttering, packing, core veneer, face veneer, hdf molded door skin, door filler, tubular particle boards, pvc boards, wpc boards, doors, block board, hard board, gypsum board, canopy, carpet, flooring wooden, bamboo, laminated engineering, tiles, granite tiles, granite blocks, black galaxy, wash basin, water closets, washbasins, ss sinks, faucets, furniture, pvc edge bending, crew, locks, pvc seals, silicone cartridges, shower enclosures, shower door hinges, handles, knobs, brackets, slides, nails, solar panels, flexible solar panels, solar power station, battery, inverters, rechargeable fans, lights, spring, 3ply disposable face mask, oxygen concentrator ,.Buying office, oem, components sourcing, value added services
We produce sealing screw for electricity meter, and electrical use. Material can be steel, stainless steel or brass.
We produce various set screw for metering, electrical, auto and furniture use. Material can be steel, stainless steel, or brass.
Machine Screw
Grub Screw
Price - Rs.190 Box Material : Mild Steel Thread Type : mm Head Shape : Star Brand : ST Finish ; White Zinc,Auto Black Packaging Type : Bag
We produce anti-theft screw of various specifications. Material can be steel, stainless and brass.
Food and beverage, home decoration, kitchen machines, wood working machines, clothing and fashion, woods, general products, massage and spa oils, silk & thai handicrafts, automotive spare parts genuine, juices and drink, food products, clothing, furniture like hotel furniture, outdoor & garden furniture, home furniture, office furniture, wooden doors, furniture hardware & accessories.Sourcing, general trading, exporters, oem, odm, and packaging
Self Drilling Screw
It is used in the fixing of Wooden Broom Stick in the Broom Block.
Teak wood, wood furniture, burma teak, wood carving, teak wood doors, antique carving furniture, solid wood flooring, wood temples, sawn timber, teak lumber.
