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Material of Construction:

Valve Type:

Valve Size:

Pressure Rating:

Number of Ports/Ways:

Actuation:

Connection:

Help with Plastic Valves specifications:

Material of Construction
          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. 
   Other       Other unlisted, specialized, or proprietary material. 
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Valve Type
           
   Your choices are...         
   Ball Valves       Ball valves provide tight shut-off and characterizable control. They have high rangeability due to the design of the regulating element, without the complications of side loads typical of butterfly or globe valves. Advantages include ease of operation and high flow, high pressure, and high temperature capabilities. Disadvantages include low cleanliness and an inability to handle slurries. 
   Butterfly Valves       Butterfly valves control the flow of gas or liquid with a disk which turns on a diametrical axis inside a pipe, or by two semicircular plates hinged on a common spindle, permitting flow in only one direction. They are used as throttling valves to control flow. Butterfly valves offer a rotary stem movement of 90 degrees or less in a compact design. Unlike ball valves, butterfly valves do not have pockets in which fluids may become trapped when the valve is closed. Advantages include suitability for chemical services, small dimensions, and high coefficient of flow. Disadvantages include low cleanliness and the inability to handle slurries. 
   Check Valves       Check valves are self-activating safety valves that prevent process flow from reversing. 
   Diaphragm Valves       Diaphragm valves are related to pinch valves, but use an elastomeric diaphragm instead of an elastomeric liner to separate the flow stream from the closure element. Instead of pinching the liner closed to provide shut-off, the diaphragm is pushed into contact with the bottom of the valve body.  Diaphragm valves are excellent for controlling the flow of fluids which contain suspended solids. They also offer the flexibility of installation in any position. Diaphragm valves are used widely in the pharmaceutical, food processing, and water treatment industries. Advantages include cleanliness and tight shut-off. Disadvantages include low pressure and temperature limits, and multi-turn operation. 
   Diverter Valves       Diverter valves change the direction of the flow of a medium to two or more different directions. 
   Directional Valves       Directional valves direct or prevent flow through selected passages. 
   Drain Valves       Drain valves allow the removal of surplus fluid from a system or container. 
   Excess Flow Valves (EFV)       Excess Flow Valves are application specific valves that are used to shut off flow in the event of an unusually high flow condition. 
   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. 
   Foot Valves       Foot valves are a type of check valve with a built-in strainer. They are used at the point of liquid intake to retain liquid in the system. 
   Gate / Knife Valves       Gate or knife valves are linear motion valves in which a flat closure element slides into the flow stream to provide shut-off. Gate valves are usually divided into two types: parallel and wedge-shaped. The parallel gate valve uses a flat disc gate between two parallel seats, upstream and downstream. Knife valves are of this type, but with a sharp edge on the bottom of the gate to shear entrained solids or separate slurries. Advantages include the ability to cut through slurries. Large sizes are commonly available. Disadvantages include pressure limitations, lack of cleanliness, and low shut-off. 
   Globe Valves       Globe valves are linear motion valves with rounded bodies, from which their name is derived.  They are used widely in industry to regulate fluid flow in both on/off and throttling service.  Advantages include precise throttling and control, as well as high-pressure limits. Disadvantages include low cleanliness and the inability to handle slurry. 
   Line Blinds       Line blind valves are used when assurance of no downstream leakage is required. A solid plate is placed in the flow path to prevent leakage. Any leakage that could occur will be outside of the flow path. 
   Needle Valves       Needle valves have a slender, tapered point at the end of the valve stem that is lowered through the seat to restrict or block flow.  Fluid flowing through the valve turns 90 degrees and passes through an orifice that is the seat for a rod with a cone shaped tip. These small valves are widely used to accurately regulate the flow of liquids and gases at low flow rates. The fine threading of the stem and the large seat area allow for precise resistance to flow. Advantages: Precise control. Disadvantages: low-pressure limitations, no slurries. 
   Pinch Valves       Pinch valves include any valve with a flexible elastomer body that can be pinched closed, cutting off flow, using a mechanism or fluid pressure. Pinch valves are full bore, linear action valves so they can be used in both an off/on manner or in a variable position or throttling service. Some typical applications for pinch valves are medical, pharmaceutical, wastewater, slurries, pulp, powder and pellets. They can effectively control the flow of both abrasives and corrosives, as there is no contact between metal parts and the transport media. Advantages: Streamlined flow, high coefficient of flow. Disadvantages: limited materials, low shut-off capabilities, low pressure limits. 
   Piston Valves       Piston valves control fluid flow within a tube or pipe by motion of a piston moving in a linear path. 
   Poppet Valves       Poppet valves open and close ports with a sealing device composed of a disk, cone, or sphere that is pressed against the seating surface using a spring. 
   Plug Valves       Plug valves, also called cock or stop-cock valves, date back to ancient times, where they were developed for use in citywide Roman plumbing systems. Today, they remain one of the most widely used valves for both on/off and throttling services.  Their design is fairly simple; the body is comprised of three main parts: body, cover and plug.  The plug is a cylindrical, tapered, or generally cone-shaped device that can be raised or lowered within the seat to maintain, restrict or completely shut off flow.  The valve is opened by rotation with the plug itself being the only element that is capable of movement. Advantages: Easy operation, medium to high flow, good shut off. Disadvantages: Low cleanliness, inability to handle slurry. 
   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. 
   Solenoid Valves       Solenoid valves are electro-mechanical devices that utilize a solenoid to control valve activation. 
   Toggle Valves       Toggle valves are used for on-off control in moderate pressure and temperature applications. They feature a toggle mechanism for valve actuation. 
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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.
   Number of Ports/Ways       Represents the number of connections or inlet / outlet ports to the valve. 
   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.
   Actuation       
   Your choices are...         
   Manual / Hand       The valve is actuated (opened or closed) via a hand operated wheel or crank. 
   Mechanical Device       A mechanical device such as a float or cam activates the valve. This does not include powered actuators. 
   Electric       An electric actuator activates the valve. 
   Electro-hydraulic       A servo valve that produces hydraulic control in response to an electrical signal input. 
   Electro-pneumatic       A servo valve that produces pneumatic control in response to an electrical signal input. 
   Pneumatic       The valve is activated by a pneumatic actuator or cylinder to open and close valve.  
   Other       Other unlisted, specialized, or proprietary actuation method. 
   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.
   Connection       
   Your choices are...         
   Threaded       The valve has internal or external threads for inlet or outlet connection(s). 
   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. 
   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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