Shortcuts:
Actuators,
Air Filter Regulators,
Chainwheels,
Go Switch,
Position Indicators / Limit Switches,
Relay / Control Box,
Triac Limit Switch,
Triac Valve Positioners,
Valve Positioners,
Parker A-Lok Stainless Steel Tube Fittings
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 Actuators |
Actuators are used to operate valves automatically and/or remotely. Actuators typically use pneumatic, electric and hydraulic power to actuate a valve shaft. The force output of the actuator must be sufficient to overcome valve static friction and dynamic torque. Static friction is developed in the metal-to-metal surfaces, seats, and seals. Dynamic torque is that unbalanced force of the process acting on the plug, disc, or ball.
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| Air Filter Regulators |
Filter Regulators should be used whenever possible. They filter and regulate the supply pressure for pneumatic actuators and instruments. Instruments have small orifices that can become restricted and plugged by dirty air, moisture can corrode and short electrical components, and pneumatic equipment performance is optimum with regulated supply pressures. Solenoid valves with timers are ideal for blowing off regulator drain cocks.
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| Chainwheels, Chain, and Masterlinks |
Chainwheels operate valves in high, normally out-of-reach locations easily and economically. Chainwheels easily attach to the hand wheel of any size valve, ranging from 2 to 36 inches in diameter, allowing valves to be opened and closed from the ground floor. Recommended for a wide range of valve control applications including operation of hard-to reach valves in boiler rooms, production and industrial process locations.
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GO Switch Leverless Limit Switches
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Go Switch leverless limit switches provide reliable, durable position sensing in the most demanding plant conditions. Unlike mechanical limit switches or inductive proximity sensors, Go Switches use a unique hybrid technology that eliminates wear and tear. As a result, Go Switches are more dependable and last longer in the toughest applications.
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Industrial Tube Fittings
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Tube and pipe connections for instrument, analyzer, process control, and general facilities fluid and gas applications. Dk-Lok Brand Instrumentation Tube Fittings and Valves in Carbon Steel, Stainless Steel, Hastelloy-C, Inconel, Monel and Brass.
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Position Indicators & Limit Switches
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Position Indicators provide visual, electronic, and digital indication of valve position. Limit Switches are typically activated by cams connected to the actuator shaft. When activated, they send discrete electrical signals to indicate actual valve position, usually confirming that a valve fully opened or closed operated remotely. In addition, these signals can be used as interlocks in a control system.
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Valve Positioners
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Positioners are used to position a valve based on a control signal. The signal can be pneumatic or electric. The positioner is attached to the valve stem. It compares the actual valve position to the input signal and sends the required output to the actuator to bring the valve to the correct position. The positioner can be analog or digital. Analog positioners use mechanical or electro-mechanical methods to position the valve. Digital (Smart) positioners use microprocessor technology. Smart positioners are preferred for accuracy, reliability, and ease of use.
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| Relay/Control Box |
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Motorized electric valve actuators need some type of switching device to control them. Relays are typically used to "switch" the valve open and closed based on a contact input. The input contact can come from a manual switch, control system and/or process sensor. Pre-packaged Relay Kits and Control Boxes simplify installation.
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