Explosion proof ball valve Shuoxiang valve production and sales

1、 Functional Features

1. General characteristics (shared by both)

• Explosion-proof certificationThe overall design of the actuator and valve complies with explosion-proof standards (such as Ex d IIC T6 Gb/Ex tD A21 IP66 T80 ℃), and can be safely used in explosive gas or dust environments.

  
  

• Tightly sealedHigh performance sealing materials such as PTFE and metal hard seals are used to ensure zero leakage and meet sealing standards such as ANSI and GB.

  
  

• Fire safetySome models are designed to comply with API 607 fire protection standards and maintain a certain degree of sealing even at high temperatures.

  
  

• compact structureSmooth flow channels, low flow resistance, fast switching, and easy automation control.

  
  

• sturdy and durableThe valve body is made of high-quality materials such as carbon steel and stainless steel, which are corrosion-resistant and have a long service life.

  
  

2. Advantages of Pneumatic Explosion proof Ball Valve

• responsivePneumatic drive switch has a fast speed (usually completing 90 ° rotation within 1-2 seconds), suitable for working conditions that require quick disconnection.

  
  

• High frequency operationResistant to frequent opening and closing, suitable for high cycle rate applications.

  
  

• intrinsic safetyNo electric spark generation (pneumatic drive), higher safety under specific conditions.

  
  

• Failure protection: It can be a single acting spring reset (automatically turned on or off in case of malfunction) or a double acting type.

  
  

• Strong environmental adaptabilityStable performance in humid and dusty environments.

  
  

3. Advantages of electric explosion-proof ball valve

• Easy wiringOnly cables need to be laid, without the need for complex gas supply pipelines, reducing installation costs.

  
  

• precise controlCan integrate a locator to achieve precise adjustment of opening (adjustable type), supporting 4-20mA signal feedback.

  
  

• Remote centralized controlEasy to connect to DCS and PLC systems for remote automation management.

  
  

• High torqueWide output torque range, capable of meeting large-diameter and high-pressure differential working conditions.

  
  

• Intelligent DiagnosisSome models have functions such as self diagnosis and fault alarm.

  
  

2、 Instructions for use

1. Pre installation inspection

• Confirm that the valve model, pressure rating, material, and explosion-proof rating meet the design requirements.

  
  

• Check if the valve cavity and flange surface are clean and free of foreign objects.

  
  

• Manually operate to check if the ball rotates smoothly without any obstruction.

  
  

• Forpneumatic valveConfirm that the gas source pressure (usually 0.4-0.8MPa) matches the actuator and the gas path connection is correct.

  
  

• Forelectric valveBefore powering on, the travel limit and torque protection must be set according to the instructions, and the motor phase sequence must be checked.

  
  

2. Installation points

• Valves can be installed at any angle, but the position is either horizontally or vertically upward on the valve stem. The actuator should be higher than the pipeline and equipped with a bracket to avoid stress.

  
  

• During installation, the direction of the valve body arrow should be consistent with the flow direction of the medium.

  
  

• When flange docking, tighten the bolts evenly and symmetrically to prevent damage to the sealing surface.

  
  

• Electric explosion-proof typeEnsure that the cable entry device is sealed properly and strictly follow the explosion-proof electrical installation specifications.

  
  

3. Operation and operation

• pneumatic valveSwitching is achieved by controlling the ventilation/disconnection of the air path through an electromagnetic valve. Adjustable type requires an electrical locator.

  
  

• electric valveOperate through on-site buttons, remote DC S signals, or manual clutch mechanisms.

  
  

• It is strictly prohibited to disassemble the actuator or valve stem under pressure in the valve chamber!

  
  

• Pay attention to observing for any abnormal noise, vibration, or leakage during operation.

  
  

3、 Maintenance and upkeep

1. Daily maintenance

• regular inspectionCheck for any external leaks in the valve body, flange, packing box, etc; Whether the actuator operates smoothly; Is the air source (pneumatic valve) dry and clean.

  
  

• Clean the surfaceRemove dirt and rust from the surface and moving parts of the valve.

  
  

• Electric ActuatorCheck the explosion-proof integrity of the sealing ring and cable interface, and regularly lubricate the gear mechanism (according to the manual requirements).

  
  

2. Regular maintenance (recommended every 6-12 months or adjusted according to operating conditions)

• pneumatic actuatorCheck the sealing of the cylinder, filter the drainage of the pressure reducing valve, and clean the solenoid valve.

  
  

• packing sealIf there is a slight leakage at the valve stem, the packing gland can be evenly compressed (not too tight).

  
  

• run testsConduct a fully open and fully closed operation test to verify the accuracy of position feedback.

  
  

3. Common troubleshooting

• Valve does not operate：

  
  

• Pneumatic valve: Check the air source pressure, solenoid valve, and pipeline blockage.

  
  

• Electric valve: Check the power supply, motor overheating protection, stroke setting, and whether the torque is overloaded.

  
  

• leak：

  
  

• Internal leakage (not tightly sealed): Check whether the sealing surface between the ball and the valve seat is worn or mixed with slag, and replace the valve seat if necessary.

  
  

• External leakage (valve stem or flange): adjustable packing at the valve stem; Check the gasket at the flange and tighten the bolts evenly again.

  
  

• Slow/sluggish movementsCheck if the medium has crystallized or accumulated dirt, and if the valve stem needs lubrication (using specified grease).

  
  

4. Important precautions

• Explosion proof maintenanceAny maintenance involving explosion-proof surfaces (such as explosion-proof shell joint surfaces, introduction devices) must be carried out by professionals, and the integrity of the explosion-proof must be ensured after maintenance.

  
  

• Non professionals are not allowed to moveIt is recommended to contact the manufacturer or professional service organization for major repairs such as replacement of internal seals and disassembly of actuators.

  
  

• Inventory spare partsSuggest storing vulnerable parts (such as sealing rings, valve seats, gaskets) and using original factory accessories to ensure performance.

  
  

4、 Selection and application suggestions

• Prioritize pneumaticIn situations where rapid disconnection, high-frequency operation, no power supply, or intrinsic safety requirements are required.

  
  

• Prioritize electric vehiclesIn situations where precise adjustment, remote centralized control, no gas source, or more convenient wiring are required.

  
  

• Special working conditionsHigh temperature, low temperature, corrosive media, granular media, etc., need to be specially specified during selection to choose special materials, seals, and designs.

  
  

DisclaimersThis article is a general technical introduction and does not constitute specific operational specifications. Before actual installation, operation, and maintenance,Be sure to consult and strictly comply with all safety regulations and requirements in the product manual, explosion-proof certificate, and technical agreement provided by Shuoxiang Valve.For complex working conditions or uncertainties, it is necessary to consult the technical personnel of Shuoxiang valve manufacturer in a timely manner.