High Pressure Knife Gate Valve

High pressure knife gate valve is also known as high pressure slurry knife gate valve. We use high quality stainless steel as raw material and design it to meet your most severe flow control challenges.

When you’re dealing with demanding applications—abrasive slurries, dense fluids, or high system pressures—standard valves simply aren’t enough. That’s where our High Pressure Knife Gate Valve steps in. Built to handle extreme conditions, this valve ensures you get uncompromising shut-off reliability, long-term durability, and smooth operation even in the harshest process environments.

Whether you need 1 piece or more, we can deliver tested, performance-qualified products on time.

Description

Keeping your fluid operation in a high-pressure environment requires high performance, which is exactly what our high-pressure knife gate valve has. Designed for PN25 / PN40 or 150 / 300 class systems, this stainless steel knife gate valve is equipped with a heavy-duty valve body, precision-machined gate, and a sealing system that can be customized for your media.

Even corrosive, high-viscosity or particle-containing fluids can achieve tight shutoff. In addition, the valve also provides manual, pneumatic, electric or hydraulic actuation options for seamless integration into your control system.

Get a quote now! TOT Valve As a professional and reliable knife gate valve manufacturer, can definitely find the gate valve suitable for your application in the shortest time.

High Pressure Knife Gate Valve Features

High Pressure Tolerance – Withstands pressure ratings up to Class 300 / PN40
Full Port Design – Reduces pressure drop and media accumulation
Metal or Soft Seats – Choose from metal-to-metal, PTFE, EPDM, or other resilient materials
Rugged Gate with Cutting Edge – Cleanly slices through heavy slurries and solids
Anti-Leak Gland Packing – Ensures zero leakage to atmosphere under pressure
Actuator Versatility – Compatible with all major actuation types, such as manual, pneumatic, electric or hydraulic actuation options
Optional Purge Ports – For flushing media build-up and extending seat life
Field-replaceable seats, serviceable stem packing, and straightforward actuator mounting save you time and cost in the field.
You get flexibility in materials, connections, coatings, and actuator types—so your valve fits your system perfectly.

Main Technical Parameters & Performance

Specification	Value
Size Range	2″ – 48″ (DN50 – DN1200)
Pressure Rating	PN10 / PN16 / PN25 / PN40 / Class 150 / 300
Temperature Range	-29°C to +425°C (depending on materials)
Seat Type	Metal, PTFE, EPDM, NBR
Leakage Rate	ANSI Class IV (metal seat), Zero-leak (soft seat)
End Connections	Wafer, Lug, Flanged (RF or FF)
Flow Direction	Uni- or Bidirectional (optional)
Actuation	Manual, Pneumatic, Electric, Hydraulic

Main Components and Materials

Component	Material Options
Body	WCB, CF8, CF8M, Duplex, CD4MCu
Gate	SS304, SS316, 2205, Hardfaced Alloy
Seat	Metal (Stellite, 17-4PH), PTFE, EPDM, Viton
Stem	SS304, SS316
Packing	Graphite, PTFE, Braided Fiber + O-ring
Bonnet (if included)	Carbon Steel, Stainless Steel
Fasteners	Zinc-plated Carbon Steel / SS304 / SS316

High Pressure Knife Gate Valve Dimensions

Dimensions are customized based on pressure rating and connection type. Below is a sample reference (DN100 / 4″), complete dimensional drawings and 3D CAD models available upon request.

Dimensions	Face-to-Face	Flange Diameter	Bolt Hole Circle	Bolt Qty / Size
4″ (DN100)	50–75 mm	220 mm	180 mm	4 × M16

Applications That Require High Reliability

If your line handles abrasive, high-pressure, or corrosive media, this valve is built for you. It’s already proven in:

Mineral Processing & Slurry Transport – Handles tailings, thick slurries, and abrasive concentrates
Pulp & Paper – For high-consistency pulp lines under pressure
Power Plants – Especially in fly ash removal, FGD systems, and cooling water
Chemical & Petrochemical – For viscous fluids, caustic solutions, and high-pressure processing
Industrial Wastewater – Handles grit-laden discharge with reliability
Oil & Gas – Ideal for separator drains and pressurized service loops

Ready for a valve that matches your demands? Don’t let pressure, abrasion, or downtime disrupt your operations. Choose a knife gate valve that’s engineered for reliability and tailored for your flow media.

Request a Quote Today and Technical Datasheet! We’re ready to help you configure the right valve for your project—just tell us your pressure, media, and pipeline requirements.