Industrial Knife Gate Valve China Factory | Leading API 602 Valve Suppliers

Industrial Knife Gate Valve China Factory | Leading API 602 Valve Suppliers

Professional China factory and suppliers of API 602 Knife Gate Valves. Available in sizes 2 to 42 inch N.B. with ANSI 150, PN6, PN10, and PN16 pressure classes. Offering Flanged and WAFER end connections for industrial fluid control.



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Our industrial Knife Gate Valves are precision-engineered solutions designed for the most demanding fluid control applications. Compliant with API 602 standards, these valves are specifically crafted to handle slurry, wastewater, and viscous media, ensuring a clean shut-off with minimal pressure drop across the system.

Built for versatility and durability, our range spans from 2" to 42" N.B. and supports multiple pressure classes including ANSI 150, PN6, PN10, and PN16. With a comprehensive selection of high-grade materials from cast carbon steel to exotic alloys, these valves provide unparalleled reliability in corrosive and high-temperature environments.

Detailed Parameters

Design StandardAPI 602Size Range2" to 42" N. B.
Pressure ClassesANSI 150, PN6, PN10, PN16End ConnectionsFlanged & WAFER
Body MaterialsCast Carbon Steel (A216 WCB), Cast Iron (A126 GR.B), Stainless SteelDisc MaterialsStainless Steel (F304/F316) or Carbon Steel
Seat RingEPDM / PTFE / Metal SeatingStem PackingPTFE / Graphite Composite
Operation ModesManual, Electric, Hydrau-Pneumatic ActuatorComplianceNACE MR-01-75 (On Request)

Key Advantages

Superior Corrosion Resistance

Available in F316 stainless steel and duplex alloys to withstand highly aggressive chemical environments.

Extended Service Life

High-grade graphite composite packing ensures minimal leakage and reduces maintenance frequency.

Precision Seal Technology

PTFE and EPDM seat rings provide a bubble-tight seal for critical isolation requirements.

Flexible Actuation

Seamless integration with electric and pneumatic actuators for automated industrial workflows.

Wide Size Availability

Offering a comprehensive scale from 50mm to 1200mm to fit any piping architecture.

Industry Compliance

Strict adherence to API 602 and NACE standards ensures global interchangeability and safety.

Product Gallery

Industrial Knife Gate Valve China Factory | Leading API 602 Valve Suppliers

Management Platforms

Quality Control

Rigorous pressure testing and material certification for every single unit produced.

Custom Engineering

Tailored material selection including duplex stainless steel for specific chemical services.

Rapid Procurement

Optimized supply chain for fast delivery of standard PN6/PN10/PN16 configurations.

Technical Support

Expert guidance on sizing and actuator selection to maximize operational efficiency.

Inventory Management

Wide stock of 2" to 42" valves to ensure minimal downtime for your facility.

Global Logistics

Professional packaging and shipping compliant with international maritime standards.

Investment Return Comparison

Performance MetricStandard Gate ValveOur Knife Gate Valve
Slurry HandlingProne to cloggingExcellent cutting action
Seal IntegrityModerateBubble-tight (PTFE/EPDM)
Installation SpaceLarge footprintCompact Wafer design
Maintenance CycleFrequentExtended (Graphite packing)
LifespanStandardSuperior (Anti-corrosive alloy)

Frequently Asked Questions

Q: What is the primary advantage of a Knife Gate Valve over a standard Gate Valve?

Knife Gate Valves feature a sharpened edge that can cut through thick slurries and viscous fluids, preventing the buildup of materials in the valve seat, which is a common failure point in standard gate valves.

Q: Which materials are best for highly corrosive chemical applications?

For corrosive environments, we recommend F316 Stainless Steel or Duplex Stainless Steel for the body and disc, combined with PTFE seat rings for maximum chemical inertness.

Q: Can these valves be integrated into an automated system?

Yes, our Knife Gate Valves are available with Electric, Pneumatic, or Hydrau-Pneumatic actuators to facilitate full integration into PLC-controlled automation systems.

Q: What are the available end connections for the 2" to 42" range?

We provide both Flanged and Wafer end connections, ensuring compatibility with various piping standards including ANSI 150 and PN6 through PN16.

Q: Does your manufacturing process meet NACE MR-01-75 standards?

Yes, manufacturing to NACE MR-01-75 is available upon request, ensuring the materials are suitable for sour gas and sulfide stress cracking environments.

Q: How do I choose between EPDM and PTFE seat rings?

EPDM is generally preferred for water-based applications and provides excellent elasticity, while PTFE is superior for chemical resistance and higher temperature stability.

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