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
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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.
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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)