VALVES
🌐 The Role of Valves in Industries
Valves are critical to industrial systems, functioning as control devices for fluids and gases. They ensure safety, efficiency, and reliability in operations by regulating flow, pressure, and direction.
🔧 Why Valves Are Useful
- Flow Control: Adjusting or stopping fluid/gas movement.
- Pressure Regulation: Maintaining safe operating limits.
- Isolation: Allowing maintenance without shutting down entire systems.
- Safety Assurance: Relief valves prevent catastrophic overpressure.
Process Optimization: Ensures consistent quality in production.
Valve Type
Visuals of coupling type
Common Applications
Gate Valve
On/off control, minimal pressure drop
Oil pipelines, water supply
Globe Valve
Precise flow regulation
Steam systems, chemical plants
Ball Valve
Quick shut-off, tight sealing
Gas lines, HVAC
Butterfly Valve
Lightweight, large flow control
Fire protection, cooling water
Check Valve
Prevents backflow
Pumping systems, wastewater
Relief/Safety Valve
Protects against overpressure
Boilers, compressors
Plug Valve
Simple design, reliable sealing
Oil & gas, slurry handling
⚙️ Factors Influencing Valve Selection
Pressure Rating
Must withstand system pressure safely.
Temperature of Fluid
High-temperature fluids require heat-resistant materials.
Material of Construction
Stainless steel, brass, cast iron, exotic alloys depending on corrosion and chemical compatibility.
Flow Characteristics
Laminar vs. turbulent flow influences valve design.
📏 Standards Governing Valve Design 2
Valves are manufactured to meet international and regional standards, ensuring safety, performance, and compatibility:
API (American Petroleum Institute)
Oil & gas industry standards.
ATEX (Atmosphères Explosibles)
Safety in explosive atmospheres.
FMUL (Factory Mutual)
Fire protection and safety compliance.
BIS (Bureau of Indian Standards)
Indian regulatory standards.
JIS (Japanese Industrial Standards)
Widely used in Asia.
BS EN (British/European Standards)
Harmonized European standards covering design, testing, and performance of valves across industries.
👉 BS EN standards are particularly important because they unify British Standards (BS) with European Norms (EN), ensuring valves meet EU directives for safety, environmental compliance, and interoperability. Examples include:
- BS EN 593: Industrial butterfly valves.
- BS EN 593: BS EN 12266: Testing of metallic valves.
- BS EN 593: BS EN 1983: Steel ball valves.
- BS EN 593:BS EN 13709: Steel globe valves.
Valves are the silent guardians of industrial systems, and adherence to standards like API, ATEX, FMUL, BIS, JIS, and BS EN ensures they perform reliably across diverse applications worldwide.
Product Specific
Split body Teflon seated butterfly valves
Size: 2” to 24” Desing Pressure- 10 bar Design standard- BS EN 593, API 609 Body type- Wafer & Lug
Resilient seated butterfly valves
Size: 2” to 24” Pressure rating- Class 125 & 175 Design standard- BS EN 593, API 609
Double offset – High performance butterfly valve
Size: 2” to 24” Pressure rating: Class 150 Design standard: BS EN 593, API 609 Body type: wafer, lug and double flange
Gate valve
Size: 2” to 48” Design standard: API 609/ BS1414/MSS-SP80 Pressure rating: PN16/Class 150/Class 300/ ANSI 800/ ANSI 1500/ANSI 2500
Check valve
Dual plate check valve
Size: 1½” to 28” Design standard: API 594/ BS 1868 Pressure rating: PN16/ANSI 150/ ANSI 300/ ANSI 600
Swing type Reflux valve
Size: 3” to 24” Pressure rating: PN16/ANSI 150/ ANSI 300/ ANSI 600
Ball valve
Shut down valve
Size: ½”, 1” & 2” Pressure rating: 2000 psi Design standard: API 608, ASME B 16.34
Floating type ball valve
Size: ½” to 12” Pressure rating: Class 150 Design standard: BS EN 17292, ASME 16.34
Three piece ball valve
Size: ½” to 2” Pressure rating: class 150/ Class 300 Design standard: BS EN 17292
Trunnion mounted ball valve
Size: 2” to 12” Pressure rating: Class 150/ Class 300 Design standard: API 6D, ASME 16.34
Pressure relief valve or safety relief valve
Pressure rating: class 150 to class 2500 Size range: 25mm x 50mm to 250mm to 350mm
Automatic control valves (surge arrestor)
Size range: 1½ “ to 24” Pressure rating: PN16 / PN25
Pressure reducing valve
Size range: 15mm to 80mm Pressure adjusting range: 1-5 kg/cm2 and 4-9 kg.cm2 Maximum inlet pressure: 16kg/cm2
Suction diffusers
Size: 2” x 2” to 12” x 12” Pressure rating: class 125 & class 250
Triple duty valve
Size 2” to 14” Pressure rating: Class 125 & Class 250
Water hammer arrestors (piston type)
Air pre-load- 60 psi (4.2 bar)
Valves for special application
Forged non-Ferrous ball valve for drinking water supply which is necessary for green building certification (Lead free brass valve)
Size- ¼” to 2” Pressure rating: 25 & 30 bar
Firefighting & HVAC application (FM approved)
Butterfly valve (UL) certified
Size range: 2” to 12” Gear operated Maximum working pressure: 300psi
Butterfly valve grooved end (UL certified)
Size: 2½” to 12” Maximum working pressure: 300 psi
OS& Y Gate valve flanged end (UL certified)
Size- ¼” to 2” Pressure rating: 25 & 30 bar
OS&Y gate valve grooved end
Size: 2½” to 12” Maximum working pressure: 300 psi
NRS Gate valve flanged end
Size range: 2½” to 12” Maximum working pressure: 300 psi
NRS Gate valve grooved end
Size range: 2½” to 12” Maximum working pressure: 300 psi
Vertical type post indicator (FM approved)
Cast iron vertical posts are designed to operate the control valve of an automatic fire sprinkler system
Swing check valve flange end (UL certified)
Size range: 2½” to 12” Maximum working pressure: 300 psi
Swing check valve grooved end (FM approved)
Size range: 2” to 8” Maximum working pressure: 300 psi