Tempering Valves and Thermally Actuated Valves Specifications

Help with Tempering Valves and Thermally Actuated Valves specifications:

Valve Type

	Your choices are...
	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, a pressure pulse from a broken line or a temperature change from an idle burner.
	Mixing Valves		Mixing valves combine the flows of two or more inlets into a single outlet for applications such as temperature or concentration control.
	Drain Valves		Drain valves allow the removal of surplus fluid from a system or container.
	Diverter Valves		Diverter valves change the direction of the flow of a medium to two or more different directions.
	Control Valves		Control valves or proportional valves are power-operated devices used to modify fluid flow or pressure rate in a process system.
	Balancing Valves		Balancing valves are mixing valves that maintain a constant water temperature by balancing hot and cold supply lines. They 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.
	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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Specifications

	Valve Size		Valve size is the designated size of the valve, as per the 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.

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Media Description

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	Air		The valve can handle all types of non-pressurized air.
	Breathable Air		Breathable air is free of contamination and is suitable for inhalation.
	Compressed Air		Compressed air is under a pressure greater than atmosphere.
	Chemical		Chemicals are substances that are produced or used in a process involving changes to molecules or atoms.
	Hydraulic Fluid		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.
	Water		Any type of water.
	Hot Water		Water that has been heated.
	Cold Water		Unheated water to cool.
	Ground Water		Ground water is untreated water that is found on or collects freely on the ground.
	Potable Water		Potable water 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 has a high concentration of salt, often from the ocean or sea.
	Wastewater		Wastewater is 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		Gasoline/diesel fuel is a mixture of flammable liquid hydrocarbons derived chiefly from crude petroleum and used as a fuel for internal combustion engines.
	High Purity Gas		High-purity gas is designated by manufacturer as being applicable and built for high-purity applications. Includes nitrogen, argon, oxygen, hydrogen and high-purity 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		Natural gases are liquid hydrocarbon mixtures that are gaseous at reservoir temperatures and pressures, but are recoverable by condensation or absorption.
	Sour Gas		Sour gas is hydrogen sulfide (H2S) laden gas.
	Specialty / Corrosive Gases		Specialty corrosive gases.
	Powder / Solids		Media in solid or powder state.
	Steam		Water in a gaseous state at a temperature above its boiling point.
	Other		Other unlisted, specialized, or proprietary media.
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Primary 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.
	Exotic Metal		Exotic metals and alloys have specialized properties. This category includes materials such as Hastelloy®, Monel®, beryllium copper, beryllium nickel, niobium, tantalum, titanium and zirconium.
	Other		Other unlisted, specialized, or proprietary 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. Acetal suffers from outgassing problems at elevated temperatures, and is 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.
	Nylon - Polyamide		Thermoplastic resin used for mechanical parts. Can be extracted, cast or injection molded.  The most common commercial grade is Nylon 6/6.  Can to glass filled to further enhance structural impact strength and rigidity.
	PEEK		Polyetheretherketone or Polyketones. PEEK is a semi-crystalline thermoplastic with excellent mechanical properties.
	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).
	Rubber		Any of several material compositions with properties similar to natural rubber.
	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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