Automation Accessories — Technical Overview & Selection Guide

Overview

Automation accessories are supporting control, monitoring, and interface devices used with automated valves, actuators, and process-control systems to provide reliable operation, position indication, control, feedback, and monitoring.

They are commonly used with pneumatic and electric actuators, control valves, on/off valves, and automated process equipment. The selection of accessories depends on the valve type, actuator configuration, control system, operating environment, and project requirements.

Key Features

• Supports automated valve operation and control

• Suitable for pneumatic and electric actuators

• Provides valve position indication and feedback

• Supports remote and local operation

• Suitable for on/off and modulating applications, where applicable

• Compatible with PLC, DCS, SCADA, and control systems

• Available for standard and hazardous-area applications

• Suitable for indoor and outdoor installation

• Available with different electrical and pneumatic connections

• Supports actuator control, monitoring, and positioning

• Available with various enclosure and protection ratings

• Suitable for industrial and process automation applications

Common Automation Accessories

• Solenoid Valves

• Valve Positioners

• Limit Switches

• Position Indicators

• Position Transmitters

• Air Filter Regulators

• Pressure Regulators

• Pneumatic Relays

• Speed Controllers

• Junction Boxes

• Local Control Stations

• Manual Override Devices

• Control Modules

• Feedback Devices

Technical Selection Parameters

Selection should consider:

Solenoid Valves

Solenoid valves are electrically operated devices used to control pneumatic actuator air supply and provide automatic opening or closing of actuated valves.

Selection may consider:

• Valve configuration

• Normally Open / Normally Closed

• Operating pressure

• Fluid compatibility

• Coil voltage

• AC/DC supply

• Flow capacity

• Electrical connection

• Enclosure protection

• Hazardous-area requirements

Valve Positioners

Valve positioners are used with control valves and actuators to accurately control valve position according to the input control signal.

Selection may consider:

• Pneumatic / Electro-Pneumatic / Digital Type

• Linear / Rotary Application

• Single-Acting / Double-Acting Actuator

• 4–20 mA Input

• Pneumatic Supply Pressure

• Required Accuracy

• Response Time

• Position Feedback

• HART / Fieldbus Communication, where applicable

• Hazardous-Area Requirements

Limit Switches & Position Indicators

Limit switches provide electrical indication of valve or actuator position, while position indicators provide local visual confirmation.

Selection may consider:

• Open / Closed Position

• Intermediate Position, where applicable

• NO / NC / Changeover Contacts

• Contact Rating

• Operating Voltage

• Rotary / Linear Movement

• Enclosure Protection

• Position Indicator Arrangement

• Actuator Compatibility

• Hazardous-Area Requirements

Air Preparation & Pneumatic Accessories

Air preparation accessories are used to provide suitable and controlled instrument air to pneumatic actuators and related equipment.

Common accessories include:

• Air Filter Regulators

• Pressure Regulators

• Pressure Gauges

• Pneumatic Relays

• Speed Controllers

• Tubing and Fittings

Selection may consider:

• Supply Air Pressure

• Required Outlet Pressure

• Air Quality

• Flow Capacity

• Filtration Requirement

• Connection Size

• Drain Arrangement

• Ambient Conditions

Control & Feedback Accessories

Automation accessories may provide control, monitoring, and feedback signals between the actuator and process control system.

Common functions include:

• Open/Closed Feedback

• Continuous Position Feedback

• Local Control

• Remote Control

• Position Monitoring

• Pressure Regulation

• Actuator Speed Control

• Control Signal Conversion

Accessories should be selected according to the requirements of the PLC, DCS, SCADA, control panel, or other automation system.

Materials & Construction

Common automation accessory housing materials include:

• Aluminium Alloy

• Stainless Steel

• Engineering Polymer

• Corrosion-Resistant Materials, where applicable

Material selection should consider:

• Corrosion Resistance

• Ambient Temperature

• Outdoor Installation

• Humidity

• Dust Exposure

• Chemical Exposure

• Mechanical Conditions

• Hazardous-Area Requirements

Enclosure & Hazardous Area Selection

Automation accessories may be supplied with different enclosure and environmental protection levels.

Selection may consider:

• IP Rating

• Dust Protection

• Water Protection

• Outdoor Installation

• Corrosion Resistance

• Ambient Temperature

• Hazardous-Area Classification

• Explosion Protection Requirements

For hazardous-area applications, accessories should be selected with the appropriate certification and protection method according to project requirements.

Quick Selection Guide

Application: Identify whether the accessory is required for a valve, actuator, control valve, or process-control system.

Valve Type: Specify the valve type and required automation arrangement.

Actuator Type: Confirm pneumatic or electric actuator and its configuration.

Function: Define whether the application requires on/off operation, modulating control, position indication, feedback, or pneumatic control.

Control Signal: Specify pneumatic, on/off, 4–20 mA, or other required control signal.

Supply: Provide required pneumatic supply pressure or electrical power supply.

Feedback: Define required open/closed or continuous valve-position feedback.

Electrical Rating: Specify operating voltage, current, contact configuration, and electrical requirements.

Communication: Where applicable, specify HART, Fieldbus, or other communication requirements.

Environment: Provide ambient temperature, humidity, dust, corrosion, and outdoor installation conditions.

Enclosure: Specify required IP rating and environmental protection.

Hazardous Area: Where applicable, provide hazardous-area classification and required explosion protection.

Connection: Specify cable glands, terminals, threaded connections, tubing, fittings, or other connection requirements.

Installation: Confirm mounting arrangement, actuator interface, valve orientation, and available installation space.

Accessories: Define required solenoid valves, positioners, limit switches, regulators, gauges, position indicators, feedback devices, or other accessories.

Testing & Inspection

Depending on project specifications and applicable standards, automation accessories may undergo:

• Functional and operational testing

• Position indication verification

• Open/closed feedback testing

• Electrical continuity testing

• Coil electrical testing

• Calibration testing

• Pneumatic pressure testing, where applicable

• Air leakage testing, where applicable

• Control signal verification

• Communication testing, where applicable

• Position feedback testing

• Insulation resistance testing, where applicable

• Dimensional inspection

• Visual and surface inspection

• IP/enclosure verification

• Hazardous-area certification verification, where applicable

Applications

Automation accessories are commonly used in:

• Oil & Gas

• Refineries

• Petrochemical Plants

• Chemical Plants

• Power Plants

• Water Treatment

• Wastewater Treatment

• Steam Systems

• Process Automation

• Process Piping

• Valve Automation

• Control Valves

• Pneumatic Actuators

• Electric Actuators

• Pipelines

• Pumping Systems

• Industrial Machinery

• Utilities

Engineering Inputs for RFQ

For technical enquiry and quotation, provide:

Accessory Type • Application • Valve Type • Actuator Type • Valve Function • Control Signal • Supply Pressure, where applicable • Power Supply • Electrical Rating • Feedback Requirement • Communication Protocol • Enclosure/IP Rating • Housing Material • Connection • Hazardous Area Classification, if applicable • Ambient Temperature • Installation Arrangement • Required Accessories • Testing & Inspection Requirements

Manufacturer Brands

1. ZOLOTO — Industrial Valves

• Brand: ZOLOTO

• Website: www.zolotovalves.com

2. MARCK — Industrial Valves

• Brand: MARCK

• Manufacturer: Hawa Engineers Ltd.

• Website: www.marckvalves.com

3. LEHRY — Industrial Valves and Instrumentation

• Brand: LEHRY

• Manufacturer: Lehry Instrumentation & Valves Pvt. Ltd.

• Website: www.lehryvalves.com

4. UFLOW — Automation and Process Control Valves

• Brand: UFLOW

• Manufacturer: Uflow Automation India

• Website: www.uflowvalve.com

5. V-TORK CONTROLS — Industrial Flow Control Valves

• Brand: V-TORK CONTROLS

• Website: www.vtorkcontrols.com

6. PENNANT — Steam Traps and Pipeline Accessories

• Brand: PENNANT

• Manufacturer: Pennant Engineering Pvt. Ltd.

• Website: www.pennantcorp.com