Types of Valves Used in Fertilizer Industry

Fertilizer plants handle corrosive chemicals, slurry, steam, ammonia, phosphoric acid, sulfuric acid, and high-pressure fluids. Different valves are used depending on pressure, temperature, chemical compatibility, and automation requirements.

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1. Gate Valve

Used for full open or full close applications in fertilizer pipelines.

Specifications

• Size Range: 2” to 48”

• Pressure Rating: Class 150 to 2500

• Material:

  • Cast Iron

  • Carbon Steel

  • Stainless Steel SS304/SS316

• End Connection:

  • Flanged

  • Butt Weld

• Operation:

  • Manual

  • Electric Actuator

  • Pneumatic Actuator

Technical Details

• Low pressure drop

• Suitable for slurry and chemical transfer

• Bi-directional flow

• Slow opening and closing

Applications

• Ammonia plants

• Sulfuric acid lines

• Water treatment

• Steam pipelines

Approximate Price

• Small Size: ₹3,500 – ₹12,000

• Heavy Industrial Type: ₹25,000 – ₹2,50,000

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2. Globe Valve

Used where throttling and flow regulation are required.

Specifications

• Size: ½” to 24”

• Pressure Class: 150 to 2500

• Body Material:

  • Forged Steel

  • Stainless Steel

  • Alloy Steel

Technical Details

• Excellent flow control

• Higher pressure drop than gate valve

• Good sealing performance

• Suitable for frequent operation

Applications

• Acid dosing systems

• Steam control

• Cooling water systems

• Process control lines

Approximate Price

• ₹2,000 – ₹85,000

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3. Ball Valve

Widely used for quick shut-off applications.

Specifications

• Size: ¼” to 36”

• Pressure Rating: ANSI 150–2500

• Seat Material:

  • PTFE

  • Reinforced Teflon

  • Metal Seat

Technical Details

• Quarter-turn operation

• Bubble-tight sealing

• Low maintenance

• Fast operation

Applications

• Gas lines

• Ammonia handling

• Nitrogen systems

• Chemical transfer

Approximate Price

• ₹800 – ₹1,50,000

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4. Butterfly Valve

Common in large diameter low-pressure systems.

Specifications

• Size: 2” to 120”

• Pressure Rating: PN10, PN16, ANSI 150

• Disc Material:

  • SS316

  • Ductile Iron

  • Alloy Steel

Technical Details

• Lightweight construction

• Compact design

• Fast opening and closing

• Suitable for large pipelines

Applications

• Water circulation

• Fertilizer slurry

• Air handling systems

• Cooling systems

Approximate Price

• ₹1,500 – ₹90,000

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5. Check Valve

Prevents reverse flow in pipelines.

Specifications

• Type:

  • Swing Check

  • Lift Check

  • Dual Plate Check

• Size: 1” to 48”

• Material:

  • Cast Steel

  • Stainless Steel

  • Bronze

Technical Details

• Automatic operation

• Prevents backflow

• Protects pumps and compressors

• Low maintenance

Applications

• Pump discharge lines

• Chemical transfer systems

• Utility pipelines

Approximate Price

• ₹1,200 – ₹75,000

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6. Diaphragm Valve

Best suited for corrosive chemicals and slurry.

Specifications

• Size: ½” to 24”

• Lining:

  • Rubber

  • PTFE

  • EPDM

Technical Details

• Leak-proof operation

• Corrosion resistant

• Ideal for acidic media

• Easy maintenance

Applications

• Phosphoric acid plants

• Slurry handling

• Corrosive chemical dosing

Approximate Price

• ₹2,500 – ₹60,000

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7. Plug Valve

Used for abrasive and corrosive services.

Specifications

• Size: ½” to 36”

• Pressure Rating: ANSI 150–600

• Body Material:

  • Carbon Steel

  • Stainless Steel

Technical Details

• Quarter-turn operation

• Compact design

• Handles slurry efficiently

• Good shut-off capability

Applications

• Chemical processing

• Fertilizer slurry

• Dust handling systems

Approximate Price

• ₹4,000 – ₹1,20,000

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8. Pressure Relief Valve (Safety Valve)

Protects systems from overpressure conditions.

Specifications

• Set Pressure: Customized

• Material:

  • Stainless Steel

  • Alloy Steel

• Temperature Range:

  • Up to 550°C

Technical Details

• Automatic pressure release

• High safety reliability

• Spring-loaded mechanism

• Critical safety component

Applications

• Boiler systems

• Ammonia storage

• Pressure vessels

• Reactors

Approximate Price

• ₹3,000 – ₹2,00,000

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9. Control Valve

Used in automated fertilizer production processes.

Specifications

• Actuation:

  • Pneumatic

  • Electric

  • Hydraulic

• Control Signal:

  • 4–20 mA

  • Digital Smart Positioner

Technical Details

• Accurate flow control

• Automated operation

• High precision

• Supports PLC/DCS integration

Applications

• Process automation

• Flow regulation

• Temperature control

• Pressure control

Approximate Price

• ₹15,000 – ₹5,00,000

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10. Knife Gate Valve

Specially designed for slurry and powder handling.

Specifications

• Size: 2” to 48”

• Material:

  • Stainless Steel

  • Cast Iron

• Seat:

  • Metal

  • Elastomer

Technical Details

• Cuts through slurry and solids

• Full bore design

• Excellent for powder handling

• Low clogging risk

Applications

• Slurry systems

• Powder fertilizer handling

• Waste treatment systems

Approximate Price

• ₹5,000 – ₹1,80,000