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Knife Gate valve
Design Features
Type: Manual knife gate valve with rising stem
Gate: Knife-edged for effective sealing and cutting through viscous/slurry media
Operation: Handwheel-operated (pneumatic or electric actuators optional)
Design: Unidirectional or bidirectional flow (depending on model)
Seat Type: Resilient seat (EPDM/NBR/PTFE) or metal-to-metal
End Connections: Lug type for dead-end service; Wafer type available
Bonnet Type: Bonnetless design for simplicity and cost-efficiency
Stem Protection: Gland packing with protective sleeves or dust covers


Cast Iron Knife Gate valve
Material of Construction
Body: Cast Iron (ASTM A126 Class B)
Gate (Disc): Stainless Steel (AISI 304/316)
Stem: Stainless Steel (AISI 410/420)
Seat/Seal: EPDM, NBR, PTFE, or Metal
Packing: PTFE or Graphite
Fasteners: Zinc-coated carbon steel or stainless steel
Size Range Available
Standard Sizes: 2” to 24” (DN50 to DN600)
Extended Sizes: Up to 48” (DN1200) on request
Pressure Rating
Pressure Class:
Typically PN10 or ANSI Class 150
Max Operating Pressure:
Up to 10 bar (145 psi) for smaller sizes
Pressure de-rates with increasing size
Temperature Range: -10°C to 120°C (with resilient seats)
Design Features
Type: Knife Gate Valve with rising stem and handwheel operation
Design: Lug or wafer-type mounting, compact and bonnetless
Flow Direction: Unidirectional or bidirectional (optional based on design)
Gate Type: Knife-edge gate for slicing through thick fluids or solids
Seat Options: Resilient (EPDM, NBR, PTFE) or metal-to-metal
Operation: Manual, pneumatic, or electric actuation possible
Dust Cover: Integrated for stem protection (visible in image)


Cast Steel Knife Gate valve
Material of Construction
Body: Cast Steel (ASTM A216 Grade WCB)
Gate (Disc): Stainless Steel (AISI 304 or 316)
Stem: Stainless Steel (AISI 410 or 420, optional 316)
Seat/Seal: EPDM, NBR, PTFE, or Metal seat (based on service condition)
Packing: PTFE or Graphite
Fasteners: Carbon Steel or Stainless Steel
Size Range Available
Standard Range: 2” to 24” (DN50 to DN600)
Larger sizes can be provided upon request for specific industrial requirements.
Pressure Rating
Pressure Class:
PN10, ANSI Class 150 (standard)
Maximum Pressure:
Up to 10 bar (145 psi) for smaller sizes
Pressure rating decreases with increase in valve size
Temperature Range:
-10°C to 425°C (depending on seat and packing material)


Stainless Steel Knife Gate valve
Design Features
Valve Type: Knife Gate Valve, rising stem with handwheel actuator
Mounting Style: Wafer-type (or optional lug type) for compact piping installations
Flow Control: Unidirectional or bidirectional design available
Gate: Precision-ground blade allows cutting through slurries or thick media
Seat Options: Metal-to-metal or resilient seats (PTFE, EPDM, Viton, etc.)
Dust Shield: Stem protector cover included for clean operation
Actuation Options: Manual (handwheel), pneumatic, or electric available
Low Torque Operation: Due to smooth stem-thread and guide system
Self-Cleaning Gate: Helps reduce clogging during operation in slurry or pulp lines
Size Range Available
Standard Sizes: 2” to 24” (DN50 to DN600)
Extended Sizes: Up to 48” (DN1200) available on request
Face-to-Face: As per MSS-SP-81 or customized standards
Larger sizes can be provided upon request for specific industrial requirements.
Pressure Rating
Standard Pressure Rating:
PN10 / ANSI 150 Class
Working Pressure:
Up to 10 bar (145 psi) for smaller sizes (2"–12")
De-rating for larger sizes depending on design
Temperature Range:
-20°C to 300°C (depending on seat and packing materials)
Suitable for steam, corrosive chemicals, and slurry media
Material of Construction
Body: Stainless Steel (SS 304 / SS 316 or equivalent grade)
Gate (Disc): Stainless Steel (SS 304 / SS 316, hardened edge optional)
Stem: Stainless Steel (SS 304 or 316)
Seat: PTFE, NBR, EPDM, Viton, or metal-to-metal
Packing: PTFE or graphite-based gland packing
Fasteners: Stainless Steel for corrosion resistance
Yoke & Bonnet: Stainless Steel (integral cast or welded type)
Quality
Delivering reliable valves for industrial applications worldwide.
Support
For General Enquiries:-info@proflowvalves.com
Sales Dept:- sales@proflowvalves.com
Or Contact Us at :- +91 9702308939/ +91 9702308258