Automatic Switch Co. Inc

Valves

Ball Valves

Ball valves are quarter‑turn isolation devices designed for dependable shut‑off, process isolation, and pressure control. Their compact design, low operating torque, and reliable sealing performance make them ideal for demanding industrial environments such as oil & gas, petrochemical, power generation, and process instrumentation

 

Key Features
  • Three‑piece body design for simplified maintenance

  • Quarter‑turn operation enabling fast shut‑off

  • Anti blow‑out stem for enhanced safety

  • Low operating torque reduces actuator size and cost

  • PTFE packing standard, graphite option available

  • High pressure capability up to 10,000 PSI

  • Multiple end connections: threaded, socket weld, butt weld, compression fittings

  • Wide material options including stainless steel, carbon steel, duplex, and alloys

  • Suitable for liquid & gas service

  • NACE compliant materials available upon request

SpecificationDetails
Pressure Class6,000 PSI / 10,000 PSI
Max Working Pressure690 bar @ 38°C (10,000 PSI)
Available Sizes¼”, ⅜”, ½”, ¾”, 1”
Body StyleStraight Pattern
ConstructionThree‑piece design
Body Material316 Stainless Steel (standard), Carbon Steel, Duplex & Alloy options
Stem DesignOne‑piece anti blow‑out stem
Ball Material316 Stainless Steel
Seat MaterialPTFE (standard), Graphite (optional)
Packing TemperaturePTFE: –73°C to +210°C, Graphite: –54°C to +510°C
Connection TypesThreaded, Socket Weld, Butt Weld, Compression Fittings
Thread StandardsNPT, BSPP, BSPT, Metric

 

Needle Valves

Needle valves regulate flow with a tapered plunger that raises or lowers by turning the handle. Their small port design allows precise control in low‑flow applications, making them ideal for industries such as oil & gas, petrochemical, chemical processing, water treatment, and industrial facilities.

 

Key Features

  • Precise flow regulation with needle‑shaped plunger

  • High pressure capability up to 10,000 PSI

  • Compact bar stock design for durability

  • Female threaded connections for easy installation

  • Corrosion‑resistant SS316 material ensures long service life

  • Available in multiple sizes from ¼” to 1”

  • Suitable for critical industries including oil refineries, gas, and water treatment

SpecificationDetails
ModelND‑10000
Working Pressure10,000 PSI
ConstructionBar stock design
End ConnectionsFemale threaded
Available Sizes¼” – 1”
MaterialSS316 Stainless Steel
ApplicationsOil & Gas, Petrochemical, Chemical Processing, Water Treatment, Industrial Facilities

 

Check Valves

Check valves are designed to prevent backflow in pipelines, ensuring one‑way flow and protecting equipment. They are widely used across oil & gas, petrochemical, power generation, pulp & paper, marine, and industrial gas applications. Available in cast, forged, and through‑conduit designs, they provide reliable sealing and long service life under demanding conditions. 

 

Key Features
  • Backflow prevention for critical pipeline safety

  • Swing & piston designs to suit different flow conditions

  • Wide size range from ¼” to 48”

  • High pressure ratings ANSI 150# to 2500#

  • Material flexibility including carbon steel, stainless steel, alloy 20, and exotic alloys

  • NACE compliant materials available for corrosive environments

  • Multiple end connections: raised face, RTJ, threaded, socket weld

  • Soft seat options available for pipeline designs

 

SpecificationDetails
Size Range¼” – 48”
Pressure RangeANSI 150# – ANSI 2500#
Body MaterialsWCB, A105N, LCC, LF2, CF8M, 316, 316L, Alloy 20, Hastelloy C, other exotic alloys
Trim Materials13Cr, SS316, Alloy 20, Monel, Hastelloy C
Seat OptionsSoft seat available on pipeline designs
Gasket MaterialsGraphite, PTFE
End ConnectionsRaised Face, RTJ, Threaded, Socket Weld, Threaded x Socket Weld
Design TypesCast, Forged, Through‑Conduit (Piggable)
ComplianceNACE compliant

 

Pressure Regulators

Pressure regulators are compact, large‑capacity, direct‑operated pressure regulators designed for reliable performance in demanding industrial environments. They provide precise pressure control across a wide range of applications including superheated steam, steam injection, steam tracing, nitrogen purging, boiler feed water, process chemicals, cooling water, sterilizers, fuel lines, and pneumatic supply systems.

 

Key Features
  • Compact design for easy installation and maintenance

  • Large capacity suitable for industrial flow requirements

  • Direct‑operated mechanism ensures dependable pressure regulation

  • Versatile applications across steam, gas, and chemical processes

  • Durable construction with steel body for long service life

  • Precise pressure control in ranges from 5–15 PSI

SpecificationDetails
ModelMR95 Series
TypeDirect‑operated pressure regulator
Size½” (M95L 300RF)
Body MaterialWCC Steel
Pressure Range5–15 PSI
ApplicationsSuperheated steam, steam injection, steam tracing, nitrogen purging, boiler feed water, process chemicals, cooling water, test fixtures, wash tanks, sterilizers/autoclaves, fuel lines, pneumatic supply

 

Flow Meters

Flow meters are precision instruments designed to measure the volumetric flow of liquids and gases. Built with durable stainless steel construction and advanced turbine technology, they provide accurate, reliable, and repeatable measurements for industrial applications. Suitable for both instantaneous and total flow monitoring, they integrate easily with digital systems for process control.

 

Key Features
  • High accuracy measurement from 0.2% to 1.5%

  • Wide flow range from 2.5 m³/h to 6,500 m³/h

  • Dual application for liquids and gases

  • Digital signal output for easy integration

  • Durable stainless steel body for long service life

  • Multiple pipe diameters from DN6 (⅛”) to DN125 (5”)

  • Wide temperature tolerance –20°C to +150°C

  • Pressure capability up to 16 bar (232 PSI)

  • Protection levels IP65, IP67, IP68 for harsh environments

  • Low power consumption with advanced microcomputer technology

SpecificationDetails
Product TypeFlow Meter
TechnologyTurbine
Fluid CompatibilityLiquids and gases
Pipe DiametersDN6 (⅛”) – DN125 (5”)
MaterialStainless steel
InstallationFlange
Communication4–20 mA output
Protection LevelsIP65, IP67, IP68
Flow Range2.5 – 6,500 m³/h
Process Temperature–20°C to +150°C
Process Pressure16 bar (232 PSI)
Accuracy0.2%, 0.5%, 1%, 1.5%

 

Control Valves

Control valves are the primary final control elements in automated process systems. They regulate flow, pressure, temperature, or level by modulating the passage of fluid in response to a control signal. Unlike isolation valves, control valves operate continuously, ensuring precise adjustment and stable process performance. They are widely used in oil & gas, power generation, chemical processing, water treatment, and manufacturing industries.

 

Key Features
  • Dynamic flow modulation for precise proportional control

  • Automated actuation via pneumatic, electric, or hydraulic actuators

  • Smart integration with digital positioners (HART, Fieldbus, Profibus)

  • Process compatibility for gases, liquids, steam, and slurries

  • Safety reliability with fail‑safe positions (open, closed, in‑place)

  • Wide operating range from vacuum to 700 bar, –200°C to +600°C

  • Noise & cavitation control with multi‑stage trims and diffusers

  • Versatile designs including globe, rotary, butterfly, diaphragm, and eccentric plug types

SpecificationDetails
FunctionModulates flow, pressure, temperature, or level
Actuation TypesPneumatic, Electric, Hydraulic
Control Signal4–20 mA, 3–15 psi
Body MaterialsCarbon Steel, Stainless Steel, Duplex, Nickel Alloys
Trim MaterialsPlug, Seat, Cage, Stem (hardfacing options available)
Temperature Range–200°C to +600°C
Pressure RangeVacuum to 700 bar
Valve TypesGlobe, Rotary (Ball/Butterfly), Diaphragm, Pinch, Eccentric Plug
Positioner OptionsAnalog or Digital (HART, Fieldbus, Profibus)
Safety FeaturesFail‑safe positions (fail‑open, fail‑closed, fail‑in‑place)
ApplicationsOil & Gas, Power Generation, Chemical Processing, Water Treatment, Food & Pharma

 

Safety Relief Valves

Safety relief valves are designed to protect pressurized systems by automatically releasing excess pressure when limits are exceeded. The Kunkle Model 300 and 600 series are versatile, high‑performance valves suitable for steam, air, gas, and liquid service. They provide reliable overpressure protection across industrial applications including boilers, pressure vessels, pipelines, and process equipment.

 
Key Features
  • Automatic overpressure protection for steam, air, gas, and liquid service

  • Versatile applications across boilers, pipelines, and process equipment

  • High pressure capability up to 300 PSI (Model 300) and 600 PSI (Model 600)

  • Durable construction with cast iron, steel, and stainless steel options

  • Multiple end connections including threaded and flanged designs

  • ASME certified for Section I and VIII service

  • Wide size range from ½” to 3”

  • Reliable sealing with renewable seat and disc options

SpecificationDetails
Models300, 600
Service MediaSteam, Air, Gas, Liquid
Pressure RangeModel 300: up to 300 PSI; Model 600: up to 600 PSI
Sizes½” – 3”
Body MaterialsCast Iron, Carbon Steel, Stainless Steel
ConnectionsThreaded, Flanged
CertificationsASME Section I & VIII
ApplicationsBoilers, Pressure Vessels, Pipelines, Process Equipment

 

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