π§ Valves are vital components of all industrial piping systems. Choosing it correctly ensures operational efficiency, safety, and compliance with organizational standards.
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π 1. Gate Valves (Gate Valves)
π Standards: API 600, ASME B16.34
✔️ Job: Complete opening and closing - not suitable for organization (Throttling)
✔️ Treadmill: Live - very low pressure
✔️ COMMON USES:
oil and gas lines
Water distribution systems
petrochemical plants
✔️ Advantages: good grip, simple design
✔️ Defects: slow to operate, corrosion when using in flow control
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π 2. Globe Valves
π Criteria: BS 1873, ASME B16.34
✔️ Job: organize and adjust flow
✔️ Treadmill: S shaped - leads to significant pressure loss
✔️ COMMON USES:
Boiler Feeding Systems
Steam & Cooling Circuits
Fuel systems
✔️ Advantages: precision control, effective tightening
✔️ Disadvantages: high pressure loss, heavier than other valves
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π 3. Ball Valves
π Standards: API 608, ISO 17292
✔️Function: Quick closure at 90° rotation angle
✔️Types: floating ball or axle-loaded
✔️ COMMON USES:
Natural Gas Lines
Automated air systems
Hydrocarbonate lines
✔️ Advantages: Integrated design, fast operation, excellent grip under high pressure
✔️ Defects: not suitable for organization - risk of seat corrosion
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π 4. Butterfly Valves
π Standards: API 609, ISO 5752
✔️Function: Quick opening/closing and limited organization
✔️Designs: Lug type, Wafer, Double/Triple displacement
✔️ COMMON USES:
Heating, ventilation and air conditioning (HVAC) systems
Water treatment plants
Fire protection systems
✔️ Advantages: lightweight, economical, fast operation
✔️ Disadvantages: less compulsion (unless there is displacement)
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✅ Criteria for selection of industrial valves
π Based on API RP 615, ISA 75, and MSS-SP
πΈMiddle type: liquid, gas, abrasive liquid or corrosive liquid
πΈ Pressure and temperature: according to ASME pressure rating (Class 150 - 2500)
πΈ Operating method: manual, antenna, electric, hydraulic
πΈ Required Referee Score: 70-2 ANSI/FCI Standard
πΈ Installation direction and available space
πΈ Easy to maintain and access
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π The most important approved global standards:
Ψ§Ω API - American Oil Institute
ΩΩ ASME - American Society of Mechanical Engineers
ISO - International Organization for Standard Unification π
π MSS-SP - Manufacturers Standards Unification Society
π DIN/EN - European and German standards
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