Help with Air Switches specifications:
Specifications
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| Working Pressure Range | The maximum allowable pressure at which a system or piece of equipment is designed to operate safely. This is the pressure range the user will operate in. It is common practice that this value should not exceed 75% of the devices maximum rated range. For example, if the device has a maximum rated range of 100psi then the working range should not exceed 75 psi. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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| Switch Point Range | The range the switch operates in that is variable and sets the upper and lower set points. | ||
| 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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Switch Characteristics
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| Switch Technology: | |||
| Your choices are... | |||
| Electro-mechanical | Mechanical contacts, relay, reed switch, etc. | ||
| Solid-state | Electronic switch, no moving parts | ||
| 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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| Switch Function | |||
| Your choices are... | |||
| Alternate Contact (Push-Push) | Push - ON, push - OFF. The switch changes from opened to closed at each actuation. | ||
| Momentary Contact | The switch is open or closed only during actuation. After actuation force is removed, the switch reverts to its normal position. | ||
| 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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| Normally Open/Closed: | |||
| Your choices are... | |||
| Normally Open | Switch is open until set switching value is seen. | ||
| Normally Closed | Switch is closed until set switching value is seen. | ||
| 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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| Number of Throws: | |||
| Your choices are... | |||
| Single Throw | Simple on-off | ||
| Double Throw | A common contact is switched between 1 or the other of 2 contacts | ||
| 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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| Number of Poles: | |||
| Your choices are... | |||
| Single Pole | Single set of contacts for switching just one electrical line. | ||
| Double Pole | Double sets of contact for switching 2 electrical lines simultaneously. | ||
| 3 or more Poles | More than 2 sets of contacts. | ||
| 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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Switch Electrical Characteristics
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| Switched Current | The maximum current that you will need to switch | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Switched AC Volts | The maximum volts (AC) that you will need to switch | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Switched DC Volts | The maximum volts (DC) that you will need to switch | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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Primary Material of Construction
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| Material: | The primary material the air switch is made from. | ||
| 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 be glass-filled to further enhance structural impact strength and rigidity. | ||
| PEEK | Polyetheretherketone or polyketones. PEEK is a semi-crystalline thermoplastic with excellent mechanical properties. | ||
| Polyethylene (PE) | Commodity thermoplastic that is soft, flexible and tough, even at low temperatures, with outstanding electrical properties but poor high 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 fluoropolymers, but has better strength and lower creep. PVDF has good wear resistance and excellent chemical resistance, but does not perform well at elevated temperatures. Brand names include: Kynar® (Elf AtoChem). | ||
| 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 | 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 or carbide are dispersed. | ||
| Ductile Iron | Ductile iron retains cast iron's machinability and corrosion-resistance, and provides additional strength, toughness, and ductility. Although its 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% 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 | 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. | ||
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Port Location
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| Your choices are... | |||
| Bottom | The air port is on the bottom of the switch. | ||
| Center | The air port is on the back of the switch. | ||
| Top | The air port is on the top of the switch. | ||
| 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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Actuator Included
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| Actuator Included | |||
| Your choices are... | |||
| Actuator Included | An air actuator is included with the switch. | ||
| 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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Environmental
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| Operating Temperature: | Full required range of ambient operating temperature. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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