DN65 Knife Gate Valve (2.5 Inch)

Why Choose DN65 Knife Gate Valve?

✓ Optimal Size Balance

• Perfect 2.5-inch design balancing flow capacity and compact installation
• Enhanced flow coefficient (Cv 165) for improved system efficiency
• Reduced pressure drop compared to smaller sizes

✓ Versatile Performance

• Superior cutting through fibrous materials and settled solids
• Bubble-tight sealing for zero leakage applications
• Excellent for both clean and dirty service applications

✓ Robust Construction

• Heavy-duty design suitable for continuous operation
• Enhanced stem diameter for improved torque transmission
• Reinforced gate design for extended service life

✓ Configuration Flexibility

• Wafer Type: 48mm face-to-face, space-efficient installation
• Lug Type: Independent mounting with dead-end service capability
• Flanged Type: 68mm face-to-face, maximum structural integrity

Technical Specifications

Configuration Options & Dimensions

Wafer Type DN65

• Face-to-Face: 48mm
• Weight: 12-16 kg
• Best For: Retrofit applications, cost-effective installations

Lug Type DN65

• Face-to-Face: 48mm
• Weight: 15-20 kg
• Best For: Dead-end service, maintenance flexibility

Flanged Type DN65

• Face-to-Face: 68mm
• Weight: 22-28 kg
• Best For: High pressure, critical process applications

Performance Data

Application Solutions

Chemical Processing

• Reactor feed lines
• Catalyst handling systems
• Chemical transfer pipelines
• Process sampling and control

Water & Wastewater Treatment

• Primary and secondary treatment systems
• Sludge handling applications
• Chemical feed and dosing systems
• Effluent discharge control

Pulp & Paper Industry

• Stock preparation systems
• Pulp transfer lines
• White water systems
• Cleaning and washing circuits

Food & Beverage Processing

• Ingredient transfer systems
• CIP (Clean-in-Place) circuits
• Waste handling systems
• Process isolation valves

Mining & Mineral Processing

• Slurry transport systems
• Tailings handling
• Concentrate pipelines
• Process water systems

Actuation Options

Manual Operation

• Standard Handwheel: Ergonomic design for easy operation
• Gear Drive: Mechanical advantage for high-pressure applications
• Extended Stem: For buried service or elevated installations
• Chainwheel: Ground-level operation for overhead installations

Automated Operation

• Pneumatic Actuators:
  • Single acting with spring return
  • Double acting for precise positioning
  • Fail-safe options available
• Electric Actuators:
  • Multi-turn with torque control
  • Position feedback and indication
  • Remote operation capability
• Smart Features:
  • Digital position transmitters
  • Limit switches and solenoids
  • HART communication protocol

Material Options

Body Materials

• WCB: Carbon steel for general industrial service
• CF8 (304 SS): Standard corrosion resistance
• CF8M (316 SS): Enhanced chemical compatibility
• CF3M (316L SS): Low carbon for welding applications
• Duplex 2205: Superior strength and corrosion resistance

Seat Technology

• EPDM Resilient: Water, chemicals (-20°C to +120°C)
• NBR (Nitrile): Oil resistance, fuel systems (-40°C to +100°C)
• Viton (FKM): Chemical resistance, high temp (-26°C to +200°C)
• PTFE: Universal compatibility (-200°C to +260°C)
• Metal Seated: Stellite overlay for extreme service

Gate Options

• Standard 304/316 SS: Polished finish for smooth operation
• Hardened Edge: Enhanced cutting performance
• Coated Gate: PTFE or ceramic coating for chemical resistance
• Reinforced Design: Extra thickness for abrasive applications

Quality Assurance & Testing

Manufacturing Standards

• ISO 9001:2015 Quality Management System
• ASME Section VIII pressure vessel code compliance
• PED (Pressure Equipment Directive) certified
• API Q1 quality management for oil & gas applications

Testing Protocols

• Pressure Testing: Shell test at 1.5× working pressure
• Seat Leakage: Zero leakage per MSS SP-81 Class VI
• Torque Verification: Operating and seating torque validation
• Cycle Testing: 10,000 cycle endurance testing
• Material Testing: PMI and mechanical property verification

Documentation

• Material test certificates (3.1 per EN 10204)
• Dimensional inspection reports
• Pressure test certificates
• Operation and maintenance manuals

Installation & Service

Installation Guidelines

• Upstream/Downstream: 5D/3D straight pipe recommended
• Support Requirements: Independent support for flanged versions
• Orientation: Any position installation capability
• Clearance: Allow for full stem extension during operation

Maintenance Advantages

• Field Serviceable: Seat and packing replacement without line removal
• Access Friendly: Top-entry design for easy maintenance
• Component Life: Replaceable wear parts extend valve life
• Tools Required: Standard industrial tools for service

Service Support

• Global Network: Authorized service centers worldwide
• Technical Support: 24/7 engineering assistance
• Training Programs: On-site and facility-based training
• Spare Parts: Comprehensive inventory and fast delivery

Industry Certifications

🏭 API 6D – Pipeline valve specification compliance
⚡ ATEX – Explosive atmosphere certification available
🍎 FDA/3A – Food grade materials and finishes
🌊 NSF/ANSI 61 – Drinking water system components
🔥 API 607 – Fire testing for critical applications
📋 ISO 15848 – Fugitive emissions testing

Competitive Advantages

🎯 Optimal Size Range – Perfect balance of flow capacity and compact design
🔧 Enhanced Durability – Reinforced components for extended service life
⚙️ Versatile Applications – Suitable for both clean and dirty service
🚀 Superior Flow – Higher Cv rating reduces system pressure losses
🛡️ Proven Reliability – Extensive field testing and validation
📦 Stock Availability – Standard DN65 configurations ready for shipment

Technical Dimensions

Standard Dimensions (PN16)

Flange Standards

Get Your DN65 Solution Today

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