Needle Valves Specifications

Specifications


	Valve Size		Valve size is the designated size of the valve by manufacturer. This typically represents the size of the passage opening.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Pressure Rating		Maximum safe pressure value for which the valve is rated.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Media Temperature		Maximum temperature of media the valve is designed to accommodate.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Flow (Cv)		The valve flow coefficient is the number of U.S. gallons per minute of 60 degree F water that will flow through a valve at a specified opening with a pressure drop of 1 psi across the valve. It is used to predict flow rates.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Connection
	Your choices are...
	Threaded		The valve has internal or external threads for inlet or outlet connection(s).
	Cartridge / Manifold		Cartridge valves are directional control valves that are inserted into manifolds to provide a cost effective compact system design.
	Compression Fitting		A sealed pipe connection without soldering or threading. As the nut on one fitting is tightened, it compresses a washer around the second pipe, forming a watertight closure.
	Bolt Flange		The valve has a bolt flange(s) for inlet or outlet connection.
	Clamp Flange		The valve has a clamp flange(s) for inlet or outlet connection.
	Union		The valve has a union connection for inlet or outlet connection(s).
	Tube Fitting		The valve has a connection for directly joining tubing at the inlet and/or outlet connections.
	Butt Weld		The valve has a butt weld sized connection for inlet or outlet connection.
	Socket Weld / Solder		The valve has a socket weld connection for inlet or outlet connection.
	Metal Face Seal		The valve has a metal gasket sandwiched between two fitting parts. The gasket forms a face seal on each side of the fitting.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Material of Construction


	Metals
	Your choices are...
	Aluminum		Aluminum is a bluish silver-white malleable ductile light trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation.
	Brass / Bronze		Brass comes with good strength, excellent high temperature ductility and reasonable cold ductility, good conductivity, excellent corrosion resistance, good bearing properties and low magnetic permeability. Sintered bronze is a porous material, which can be impregnated with oil, graphite or PTFE. Not suitable for heavily loaded applications but useful where lubrication is inconvenient.
	Cast Iron		The term "cast iron" refers not to a single material, but to a family of materials whose major constituent is iron, with important trace amounts of carbon and silicon. Cast irons are natural composite materials whose properties are determined by their microstructures - the stable and metastable phases formed during solidification or subsequent heat treatment. The major microstructural constituents of cast irons are: the chemical and morphological forms taken by carbon, and the continuous metal matrix in which the carbon and/or carbide are dispersed.
	Ductile Iron		Ductile iron retains cast iron's machinability and corrosion-resistance, and provides additional strength, toughness, and ductility. Although it’s chemical properties are similar to those of cast iron, ductile iron incorporates significant casting refinements, additional metallurgical processes, and superior quality control.
	Copper		A common reddish metallic element that is ductile and malleable and is one of the best conductors of heat and electricity.
	Stainless Steel		Stainless steel is chemical and corrosion resistant and can have relatively high-pressure ratings.
	Steel		Steel is a commercial iron that contains carbon in any amount up to about 1.7 percent as an essential alloying constituent. It is malleable when under suitable conditions, and is distinguished from cast iron by its malleability and lower carbon content.
	Other Metal		Other unlisted, specialized, or proprietary metal material.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Plastics:		Please consult the manufacturer of the valve for specific properties of the materials used in the valve.
	Your choices are...
	Acetal		Acetal polymers are semi-crystalline. They offer excellent inherent lubricity, fatigue resistance, and chemical resistance. Acetals suffer from outgassing problems at elevated temperatures, and are brittle at low temperatures. Glass filled, and added lubrication grades are available, flame-retardant grades are not. Brand names include Celcon® (Hoechst Celanese), Delrin® (Dupont), Thermocomp® (LNP), Ultraform® (BASF), and Acetron® (DSM).
	PVC		Polyvinyl Chloride (PVC) is a widely used material that has good flexibility, smooth surface, and nontoxic qualities. Some grades are used in food and chemical processes due to the inert nature of PVC. Brand names include: ACP® and Dural® (Alpha Gary), Geon® (Geon), Benvic® (Solvay), Flexalloy® (Teknor Apex).
	CPVC		Chlorinated polyvinyl chloride (CPC) a higher type grade of plastic commonly used for hot / cold water distribution, sprinkler piping, and some chemicals. Suitable for high temperatures.
	PTFE - Teflon®		Polytetrafluoroethylene (PTFE) is an insoluble compound that exhibits a high degree of chemical resistance and a low coefficient of friction. It is sometimes marketed in proprietary classes of materials such as Teflon®, a registered trademark of DuPont Dow Elastomers.
	Polyethylene (PE)		Commodity thermoplastic that is soft, flexible and tough - even at low temperatures - with outstanding electrical properties but poor temperature resistance. It also has very good chemical resistance but is prone to environmental stress cracking; it has poor UV resistance (unless modified) and poor barrier properties, except to water.
	Polypropylene (PP)		Polypropylene is a thermoplastic material exhibiting excellent cold flow, bi-axial strength, and yield elongation properties. It is similar to PVC but can be used in exposed applications because of its resistance to UV, weathering, and ozone.
	PVDF		Polyvinylidene fluoride (PVDF) is a melt processable fluoropolymer. It is similar in properties to other fluoropolymer, but has better strength and lower creep than the other members of this family. PVDF has good wear resistance, and excellent chemical resistance. But does not perform well at elevated temperatures. Brand names include: Kynar® (Elf AtoChem).
	Other Plastic		Other unlisted, specialized, or proprietary plastic material.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Application



	Your choices are...
	Balancing Valves		Balancing valves are mixing valves that maintain a constant water temperature by balancing hot and cold supply lines. They are able to compensate for a pressure drop in either supply line and can maintain a consistent temperature. Balancing valves are sometimes referred to as pressure-balancing valves.
	Block and Bleed Valves		Block and bleed valves are configured so that flow through the valve is blocked at both the inlet and outlet and a small port is provided to drain or depressurize the space between. This configuration is often required to isolate high-pressure sections of a system to facilitate safe maintenance or rapid depressurization. These valves are also referred to as double block and bleed valves.
	Blow Off Valves		Blow off valves (BOV) are used to blow pressure off the pipeline and in purging operations. Blow off valves are also used in the automotive industry to relieve pressure in the piping from the turbo to the inlet manifold when the throttle is backed off. When used in this way, they are referred to as compressor bypass valves.
	Control Valves		Control valves or proportional valves are power-operated devices used to modify fluid flow or pressure rate in a process system.
	Directional Valves		Directional valves direct or prevent flow through selected passages.
	Diverter Valves		Diverter valves change the direction of the flow of a medium to two or more different directions.
	Drain Valves		Drain valves allow the removal of surplus fluid from a system or container.
	Float Valves		Float valves automatically open or close as the level of a fluid changes. A float that rests on the top of the liquid operates these valves mechanically.
	Hydraulic Valves		Hydraulic valves contain and transfer the flow and pressure of hydraulic fluid in hydraulic power systems. They range from simple shutoff valves to precise control valves used in motion control systems.
	Metering Valves		Metering valves are capable of accurately controlling the flow of a fluid.
	Mixing Valves		Mixing valves combine the flows of two or more inlets into a single outlet for applications such as temperature or concentration control.
	Pilot Valves		Pilot valves are small valves that are used to operate larger valves. They generally require less applied power to turn the larger valve than if the larger valve was operated independently. Solenoid valves are often used as pilot valves.
	Pneumatic Valves		Pneumatic valves are designed for use with compressed air.
	Pressure Relief Valves		Pressure relief valves are self-actuated safety valves designed to relieve excess upstream pressure from the line.
	Safety Valves		Safety valves contain a thermal sensing component that opens or closes in response to temperature changes or close a line and stop the flow of material when a pre-set condition occurs.
	Sampling / Dispensing Valves		Sampling valves or dispensing valves are fitted to a reactor or pipeline to allow a small sample of a fluid to be withdrawn for testing or mixing. Some sampling valves ‘trap’ a small quantity of fluid in a chamber, and only this fluid is released when the valve is operated.
	Sanitary / Hygienic Valves		Sanitary and hygienic valves are used in aseptic applications in the dairy, brewing, beverage, pharmaceutical and bio-chemical industries.
	Shut Off Valves		Shut off valves close a line to stop the flow of material when a pre-set condition occurs such as excess flow or a pressure pulse from a broken line or a temperature change from an idle burner.
	Underwater Valves		Underwater valves are designed to handle excess external pressure and block water ingress in underwater applications. For example, they may be installed in a pipeline on the seabed. Underwater valves are also referred to as sub-sea valves.
	Vacuum Relief / Anti-siphon Valves		Vacuum relief valves are automatic valves that open or close a vent to relieve a vacuum, depending on whether the vacuum is above or below a predetermined value. They are frequently used in hot water supply systems. An anti-siphon valve is a valve, usually plastic or brass, used to control the flow of water in one direction. It will prevent a backflow of water into the potable water supply.
	Other		Other proprietary, specialized, or unlisted applications.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Media Description



	Your choices are...
	General Purpose		Valves that cover a variety of general industrial medias.
	Air		The valve can handle all types of non-pressurized air.
	Breathable Air		Air that is free of contamination and is suitable for inhalation.
	Compressed Air		Air that is under a pressure greater than atmosphere.
	Water		Any type of water.
	Hot Water		Water that has been heated.
	Cold Water		Unheated water to cool.
	Ground Water		Untreated water that is found on or collects freely on the ground.
	Potable Water		Water that is considered safe and fit for human consumption, culinary and domestic purposes and meets the requirements of the health authority having jurisdiction.
	Salt Water		Water that has a high concentration of salt, often from the ocean or sea.
	Wastewater		The spent or used water of a community or industry that contains dissolved and suspended matter.
	Gas		Any type of gas, although generally excluding air.
	Gasoline / Diesel Fuel		A mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used as a fuel for internal-combustion engines.
	High Purity Gas		Designated by manufacturer as being applicable and built for high purity applications - includes nitrogen, argon, oxygen, hydrogen, and H.P. mixtures.
	LP - Gas		Liquefied petroleum is a gas containing specific hydrocarbons that are gaseous under normal atmospheric conditions, but can be liquefied under moderate pressure and temperatures. Propane and butane are examples.
	Natural Gas		Liquid hydrocarbon mixtures that are gaseous at reservoir temperatures and pressures but are recoverable by condensation or absorption. Natural gasoline and liquefied petroleum gases fall in this category.
	Sour Gas		Hydrogen sulfide (H₂S) laden gas.
	Specialty / Corrosive Gases		Specialty corrosive gases.
	Abrasive Material		Substances that abrade or wear down.
	Acids / Corrosive Chemicals		Substances with distinct molecular compositions that are produced by, or used in, a chemical process, or have a high concentration of acid.
	Adhesives		Substances capable of holding materials together by surface attachment.
	Concrete / Grout		Concrete is a building material created by combining a mineral (which is usually sand, gravel, or crushed stone) a binding agent (natural or synthetic cement), chemical additives, and water.
	Coolants		Media that produces cooling, especially a fluid that draws heat away by circulating through an engine or by bathing a mechanical part.
	Hazardous Materials		Substances capable of posing a risk to health, safety, or to property.
	High Viscosity Fluids		Typical results from this selection will yield products that have been designated by the manufacturer to handle thick liquid materials. Typically over 100,000 cps.
	Hydraulic Fluid		Fluid serving as the power transmission medium in a hydraulic system. The most commonly used fluids are petroleum oils, synthetic lubricants, oil-water emulsions, and water-glycol mixtures.
	Liquid Metal		Metal heated so that is in a liquid state.
	Lubricants		A substance, such as grease or oil, which reduces friction when applied as a surface coating to moving parts.
	Oil		Any of many mineral, vegetable, and synthetic substances and animal and vegetable fats that are generally slippery, combustible, viscous, liquid or liquefiable at room temperatures, soluble in various organic solvents such as ether but not in water, and used in a great variety of products, especially lubricants and fuels.
	Powder / Solids		Media in solid or powder state.
	Rendering Wastes		Wastes from food processing.
	Sludge		Solid matter produced by water and sewage treatment processes.
	Slurry / Ash Slurry		A watery mixture of insoluble matter.
	Steam		Water in a gaseous state at a temperature above its boiling point.
	Other		Other unlisted, specialized, or proprietary media.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Market Segment



	Your choices are...
	General Industrial		Valves for general use and not designed around a specific application or industry.
	Aerospace / Defense		Designated by manufacturer as being applicable and built to military specifications (MIL-SPEC). Covers aircraft, the military, equipment and supplies, as well as space, aerospace, medical and more.
	Agriculture / Horticulture		Designated by manufacturer as being applicable to the agricultural or horticultural industry. Establishments primarily engaged in the cultivation of soil and crops and the raising of livestock.
	Refrigeration		Designated by manufacturer as being suitable for use in refrigeration applications.
	Automotive		Designated by manufacturer as being applicable to the automotive industry. Includes vehicle and parts manufacturers, dealers and aftermarket services in the automotive sector.
	Commercial		Valves constructed for basic commercial uses.
	Construction		Designated by manufacturer as being applicable to needs within the construction industry.
	Cryogenic		Designated by manufacturer as being applicable to extreme cold applications such as for liquid gas and refrigerants.
	Fire Service		Designated by manufacturer as being applicable for use in fire service or fire fighting applications.
	Flood Control		Designated by manufacturer as being applicable for flood control applications.
	Food Service		Designated by manufacturer as being applicable and built for food service applications.
	Food Processing		Designated by manufacturer as being applicable and built for food processing applications.
	HVAC		Designated by manufacturer as being applicable to the heating, air conditioning, and ventilation industry.
	Irrigation		Designated by manufacturer as being applicable for use in irrigation applications.
	Machine Tool		Designated by manufacturer as being applicable for use within or around machine tools.
	Maritime		Designated by manufacturer as being applicable to the maritime or marine industry.
	Medical / Laboratory		Designated by manufacturer as being applicable to the medical industry.
	Mining		Designated by manufacturer as being applicable to the mining industry.
	Municipal		Designated by manufacturer as being applicable to use by municipal agencies.
	OEM Supply		Designated by manufacturer as being applicable to supplying components as an OEM supplier.
	Oil and Gas Production		Designated by manufacturer as being applicable for oil and gas production.
	Pharmaceutical / Biotechnology		Designated by manufacturer as being applicable to the pharmaceutical and biotechnology industries. Producers of organic and inorganic medicinal substances for human or veterinary use.
	Plumbing / Waterway		Designated by manufacturer as being suitable for plumbing and other water supply applications.
	Power Gen / Nuclear		Designated by manufacturer as being applicable to the power generation industry.
	Pulp and Paper		Designated by manufacturer as being applicable to the pulp and paper industry.
	Recreational		Designated by manufacturer as being applicable for use within the recreational products industry.
	Semiconductor		Designated by manufacturer as being applicable to the semiconductor industry.
	Other		Other unlisted or specialized industry or market segment.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

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