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HomeMy WebLinkAboutTab 2 Spears Actuated Diaphragm ValvesPage 5 Contact Spears for Additional Custom Configurations to User Specifications PNEUMATIC ACTUATOR FEATURES OVERVIEW Standard Pneumatic Actuator Features Premium Pneumatic TU Ball Valves Premium Pneumatic Butterfly Valves Premium Pneumatic Diaphragm Valves Type Dual Piston, Rack & Pinion Dual Piston, Rack & Pinion Linear Piston Enclosure Material (ends/body) Epoxy Coated/Hard Anodized Aluminum Epoxy Coated/Hard Anodized Aluminum PES-Polyestersulphone Standard Operation Air-to-Air or Air-Spring Closed Air-to-Air or Air-Spring Closed Air-to-Air or Air-Spring Closed Standard Operating Pressure 80 psi 80 psi 40 - 140 psi Air Connection Size 1/8” 1/8” 1/8” Basic Manual Override Standard Standard (Option) Indicator Standard Standard Standard Options & Accessories Air-Spring Open Option Option Option 40 psi Operating Pressure Option Option Variable Range (Standard) 60 psi Operating Pressure Option Option Variable Range (Standard) Basic Manual Override (Standard) (Standard) Option Declutchable Manual Override Option Option -- Pneumatic Positioner Accessory Accessory Accessory Electro-Pneumatic Positioner Accessory Accessory Accessory Dome Position Indicator Accessory Accessory Accessory 3 & 4-Way Solenoid Valve Accessory Accessory Accessory Dual Power Solenoid Valve Accessory Accessory -- Limit Switches Accessory Accessory Accessory Output Signal Limit Switches Accessory Accessory -- Stainless Steel Pressure Gauge Set Accessory Accessory Accessory Stem Extension Accessory Accessory Accessory Page 3 SPEARS ACTUATED VALVE PACKAGES Choose from economical Electro Ball Valve packages, or one of Spears Premium Actuation packages which can be fully customized to user specifications with addition of custom feature and control accessories for Spears True Union and Compact Ball Valves, Butterfly Valves or Diaphragm Valves. Retrofit actuation of existing Spears valve installations is also available. Contact factory for additional information. Actuated Valve Packages Overview Notes: 1 - Butterfly Valves sizes 30” - 60” produced to order. 2 - 2-1/2” to 8” Diaphragm Valves available in Flanged ends only. 3 - 1/2” -2” Socket and threaded Diaphragm Valves are True Union style. Contact Spears for Additional Custom Configurations to User Specifications Viton® is a registered trademark of DuPont Dow Elastomers. Basic Basic Valve Options Actuation Package Available Valve Illustration Valve Type Basic Valve Material Size Range (inch) Seal Material Options End Connector Options Premium Electric Actuation Premium Pneumatic Actuation Electro Series Actuation True Union Ball Valves PVC 1/2 - 6 EPDM Viton® PTFE Socket Threaded Flanged XXX 1/2” - 2” CPVC 1/2 - 6 EPDM Viton® PTFE Socket Threaded Flanged XXX 1/2” - 2” Compact Ball Valves PVC 1/2 - 2 EPDM Viton® Socket Threaded Flanged X CPVC 1/2 - 2 EPDM Viton® Socket Threaded Flanged X Butterfly Valves PVC 1-1/2 - 12 Buna-N EPDM Viton® PTFE Flanged X X CPVC 1-1/2 - 12 Buna-N EPDM Viton® PTFE Flanged X X PP 1-1/2 - 60 1 EPDM Viton® PTFE Flanged X X Diaphragm Valves PVC 1/2 - 8 2 EPDM Viton® PTFE Socket 3 Threaded 3 Spigot Flanged XX CPVC 1/2 - 8 2 EPDM Viton® PTFE Socket Threaded Spigot Flanged XX PP 1/2 - 8 2 EPDM Viton® PTFE Threaded Flanged XX Page 22 Spears Diaphragm Valve Premium Pneumatic Actuation Package This full-featured industrial grade valve is engineered to provide accurate throttling and shut off for chemical processing, industrial, and water treatment applications. Weir type design eliminates entrapped fluids in valve. Excellent for handling of liquids with suspended solids, viscous materials and slurries. Premium pneumatic actuators are Air-to-Air (Double Acting; optional Spring Return) Actuator for 1/2”- 2” valves features a packless/ glandless linear piston design and one-piece actuator/bonnet constructed from high integrity PES (Polyethersulphone), chemically resistant to virtually all acids, caustics, and solvents. Actuator for 2-1/2” - 4” valves features a linear diaphragm design and chemical resistant Polyester coated housing. Diaphragm Valve Specifications Style Diaphragm • Weir type • fully repairable Material PVC, CPVC, PP Size Range 1/2” - 8” Pressure Rating PVC & CPVC 1/2”- 2” = 235 psi @ 73°F 1/2”- 2” Flanged =150 psi @ 73°F 2-1/2”- 4” = 150 psi @ 73°F 6” = 100 psi @ 73°F 8” = 75 psi @ 73°F PP: 1/2”-4” =150 psi @ 73°F 6” = 100 psi @ 73°F8” = 75 psi @ 73°F With PTFE Diaphragm 1/2”- 4” = 150 psi @ 73°F Diaphragm EPDM, Viton ®, or elastomer backed PTFE End Connector PVC & CPVC = True Union socket/thread, or Spigot Body (1/2” -2”) Flanged Body (1/2”- 8”) PP: True Union threaded (1/2” -2”), Flanged Body (2-1/2”- 8”) Special Valve Options & Accessories • Diaphragm & O-ring Replacement Kits • Hypalon® (CSM) Diaphragms • EPDM backed PTFE Diaphragms • Viton® backed PTFE Diaphragms Custom Pneumatic Actuation Options & Accessories • Spring Return Operation (Fail Safe) • Visual Position Indicator • Pneumatic & Electro Pneumatic Positioners • 3 & 4 Way Solenoid Valves • Micro Limit Switches • Custom ID Tags PNEUMATIC ACTUATED DIAPHRAGM VALVES Standard 2-Position Actuator Specifications Valve Sizes 1/2” -2”: Type Piston • Linear action Standard Operation Air-to-Air (double acting)Supply Pressure 40-100 psi Air Connection 1/8” Body PES (Polyethersulphone) Valve Sizes 2-1/2” - 4”: Type Diaphragm • Linear action Standard Operation Air-to-Air (double acting) Standard Operating Pressure 40-100 psiAir Connection 1/8” (1/2” - 2” valves) 1/4” (3” & 4” valves) Body Polyester coated Valve Sizes 6”- 8”: TBA Sample Engineering Specification All pneumatically actuated diaphragm valves shall be True Union Socket/Thread or Flanged or Spigot type constructed from PVC Type I Cell Classification 12454 or CPVC Type IV Cell Classification 23447 or UV Stabilized PP. All valve diaphragms shall be EPDM or Viton® or Hypalon® or elastomer backed PTFE. All True Union valve union nuts shall have Buttress threads. All valve components shall be replaceable. All 1/2” through 2” valves shall be pressure rated to 235 psi, all 2-1/2” through 4” valves, 1/2”- 4” flanged valves and 1/2” - 4” PTFE diaphragm valves to 150 psi, all 6” valves to 100 psi, and all 8” valves to 75 psi for water at 73° F. Pneumatic Actuators shall be factory installed, linear type with preset stops. Operation shall be Air-to-Air (double acting) for 40 - 100 psi supply pressure range. Actuatorshall be equipped with [selected options list], as manufactured by Spears Manufacturing Company. Page 23 Standard Package Dimensional Information: DIAPHRAGM VALVES - PNEUMATIC Pneumatic Diaphragm Valve - Socket/Thread Open Close 1/2 9/16 5-15/16 1-15/16 1-21/32 2-11/16 4-17/32 4-5/16 1-29/32 3-3/8 3/4 23/32 6-1/2 2-9/32 2-3/8 3-15/16 6-7/32 5-31/32 2-1/4 2-17/32 1 27/32 7-1/4 2-7/8 2-3/32 4-1/16 6-11/16 6-5/16 2-1/2 2-23/32 1-1/4 1-9/32 8 3-5/16 3-1/16 6-1/32 9-5/16 8-5/8 2-3/4 3-1/16 1-1/2 1-9/32 9-3/8 3-9/16 3 5 9-5/16 9-5/16 3-5/16 3-19/32 2 1-1/2 10-1/2 4-7/32 3-1/16 6-1/32 10-1/32 9-3/32 3-3/4 4-1/4 Size SOC THDGHABCF Page 35 The basic options and accessories listed in this section represent many of the most commonly used for pneumatic actuation of pneumatic Diaphragm Valves (see previous section for pneumatic Ball Valves and Butterfly Valves). Contact Spears for any desired accessories, options, functions, or special controls not listed. For differentiation, “Option” is used to identify a basic variation in the actuator while “Accessory” is used to identify an add-on function to the actuator. Both options and accessories are factory configured to order on the actuation package. Overview of Basic Options & Accessories Available Contact Spears for any desired accessories, options, functions, or special controls not listed in this guide. Standard Pneumatic Actuator Features Premium Pneumatic Diaphragm Valves Spring Return Option 40 to 100 psi Variable Operating Pressure (Standard) Declutchable Manual Override Option Pneumatic Positioner Accessory Electro-Pneumatic Positioner Accessory Micro Limit Switch Module Accessory 3-Way Solenoid Valve Accessory Stainless Steel 3-Gauge Set Accessory ID Tag -SS Accessory PNEUMATIC ACTUATOR OPTIONS & ACCESSORIES For Diaphragm Valves 3 to 15 psi Pneumatic Positioner (for Diaphragm Valves) Available for all Premium Pneumatic actuated Diaphragm Valves. Positioner is used to control or throttle flow by modulating the air to the actuator in response to an external 3-15 psi control signal input. Available with NEMA 4x enclosure mounted on top of actuator with 180° visual indicator. Positioner can be top or bottom loading, with or without gauges. Gauge set includes: 1 input pressure gauge 0-30 psi and 2 output pressure gauges 0-160 psi. Optional Stainless Steel gauge set available. Spring Return (Fail Safe) (Air-to-Open or Air-to-Close) Option Available for all Premium Pneumatic actuated valves. An internal spring in the actuator is configured to either open or close upon loss of air supply. Spring return can be specified as either Air-to-open when spring return close is desired or Air-to-Close when spring return open is desired. Operating Pressure (for Diaphragm Valves) Spears Diaphragm Valves use a 40 psi to 100 psi variable range operating pressure as a standard feature and require no pressure options. Page 38 The following valve actuation terminology is provided for better understanding and elimination of miscommunications. Terms and definitions are grouped by related topics and listed in alphabetical order. GENERAL SYSTEM TERMS Ambient Temperature - the temperature of the air surrounding the actuator. Generally stated as a maximum and minimum for proper actuator operation. Note that ambient temperature range for an actuator may exceed that of a plastic valve and should not be considered to be the same as the service temperature. Maximum Line Pressure - the media pressure against which the valve will have to close. Maximum Service Temperature - maximum temperature of the media. Service temperature should be considered in selection of the proper thermoplastic valve material for the application. Media - the material flowing through a valve. Modulating - throttling or regulating the flow through a valve by varying the position between open and closed. On-Off Service - basic full open or full closed operation to start or stop flow. Operating Torque - force required to operate a valve, expressed in inch-pounds or foot-pounds. Supply Pressure - facility air pressure supply required to operate pneumatic actuator. ACTUATOR TERMS Double Acting - a pneumatic actuator which uses air to both open and close the valve. Also referred to as “Air-to-Air” operation. Electric Actuator - an electromechanical device used to actuate (open, close, or modulate) a valve. An electric motor and gear train is used to actuate the valve. Numerous application considerations must be made in using an electric actuator. These include, duty cycle, cycle time, supply voltage, operating temperature, and enclosure rating (NEMA) for use of electric devices under various environmental conditions. Fail-Closed - spring return in a pneumatic actuator which closes the valve upon loss of air pressure. Also referred to as “Air-to Spring Close” or “Air-to-Close” operation. Fail-Open - spring return in a pneumatic actuator which opens the valve upon loss of air pressure. Also referred to as “Air-to-Spring Open” or “Air-to-Open” operation. Pneumatic Actuator - an air operated mechanical device used to actuate (open, close, or modulate) a valve. The actuator converts air pressure into mechanical force most commonly using either a piston or diaphragm. The mechanical force output can be either rotational, as in actuation of a ball valve, or linear as commonly used in actuation of a diaphragm valve. Pneumatic actuators are not significantly limited by duty cycles and cycle time (virtually instantaneous) found with electric actuators. However, they may require additional accessories to further control speed of operation and a voltage supply for certain electric signal devices which may be desired. Spring Return - an actuator using a spring to return the valve to either an open or closed position upon loss of power. Spring returns are most commonly used with pneumatic actuators, but can be used on electric actuators where it is necessary for the valve to open or close by design or by system failure (see also Fail-Close and Fail-Open terms). Appendix A - Actuation Terminology & Definitions A1 Page 39 ACTUATOR ACCESSORY & RATING TERMS Duty Cycle - the capability of an electric actuator motor to operate or “cycle” continuously - a 100% Duty Cycle. Ratings less than 100% mean that the actuator motor is capable of intermittent operation, as is the case with most actuation applications. For example, a 25% Duty Cycle means that for each 1-minute of operation, 3-minutes of non-operation is required. Duty cycles greater than 25% are generally needed only when additional work loads are encountered, such as valve modulation or in actuation of larger butterfly valves. Limit Switches - electrical switches which may be applied to either electric or pneumatic actuators to supply a signal that the valve cycle has been completed. In electric actuators, the primary limit switches are used to control the open and closed position of the valve. Auxiliary limit switches may be used to perform other functions such as starting or stopping a pump. Limit switches are most often mechanical and are activated by physical contact with either a lever or plunger. Proximity switches are electrically tripped without physical contact and may be used with certain computer or micro processor controls. NEMA Rating - National Electric Manufacturers Association standard for rating electrical component enclosures. The most commonly used NEMA ratings for electric actuator and electrical accessory enclosures are NEMA 4 and NEMA 4X. NEMA 1: General Purposes - for indoor use without unusual service conditions, primarily to protect components from contact. NEMA 2: Drip proof - for indoor use with degree of protection against limited amounts of falling water or dirt. NEMA 3: Rain tight - for outdoor use with protection from windblown dust, rain and sleet, and undamaged by ice formation. NEMA 4: Watertight and Dust tight - for indoor/outdoor use with a protection from windblown dust, rain or hose directed wash down environments. NEMA 4X: Watertight and Dust tight - same as NEMA 4 with addition of corrosion resistance. NEMA 7: Explosion Proof (class I, division 1, groups A, B, C, D) - designed to contain an internal explosion without causing an external hazard when installed in a designated environment group. Group A= atmospheres containing acetylene; Group B = atmospheres containing hydrogen; Group C = atmospheres containing ethyl-ether vapors, ethylene, or cyclopropane; Group D = atmospheres containing gasoline, hexane, naphtha, benzene, butane, propane, alcohol, acetone, benzol, lacquer, solvent vapors or natural gas. NEMA 9: Explosion Proof (class II, division 1, groups E, F, G) - Dust-ignition-proof enclosures designed to prevent both entrance of dust and external heating capable of igniting dust on the enclosure or in the surrounding atmosphere. Group E = atmospheres containing metal dust including aluminum, magnesium, their commercial alloys, and other metals of similar hazardous characteristics; Group F = atmospheres containing carbon black, coal or coke dust; Group G = atmospheres containing flour, starch, or grain dust. Positioner - attachment for either electric or pneumatic actuators which provides automatic modulating control of the valve position from open to closed. Electric positioners work by comparison of 2-currents, one derived from the input signal and one from the actuator. Pneumatic positioners increase, decrease and balance the air supply according to an input signal from an external control source. Input signals are generated by either a 3 to 15 psi pneumatic signal, or a 4 to 20 milliamp electro-pneumatic signal. Solenoid Valve - an electro-magnetically operated valve which enables electrical control of air supply to a pneumatic actuator. Solenoids are wired to a manual switch or any electric controller. Double Acting actuators require a 4-way solenoid, Spring-Return actuators require a 3-way solenoid for proper air control. As electrical devices, solenoid valves are available in various NEMA ratings. Transducer - a device that converts one signal type to another. In actuation controls, the most common use of a transducer is in conversion between electrical signals and pneumatic signals. Appendix A - Actuation Terminology & Definitions A2 Page 40 Appendix B - Premium Actuated Valve Part Number Selection (Optional) B1 Page 41B2 Appendix B - Premium Actuated Valve Part Number Selection (Optional) Page 43B4 Appendix B - Premium Actuated Valve Part Number Selection (Optional)