Electric Actuated Knife Gate Valve - Nitrided Gate

2in~48in; PN0~PN20 (Class125~150)

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Product Advantages

icon Extreme Wear Resistance (Nitrided Gate): Specialized nitriding treatment hardens the stainless steel blade, easily resisting scratches from quartz and mineral slags to ensure a long, leak-free service life.

icon Thickened Body: The heavy-duty cast body offers high safety margins, effectively resisting high pressure, pipeline stress, and water hammer deformation.

Standards and Certifications

Design and Manufacture: MSS SP-81, ASME B16.34, JB/T 8691

Pressure & Temperature Rating: ASME B16.34

Side Flange Standards: ASME B16.5 (Class 150), EN 1092-1 (PN10/PN16), JIS B2220 (10K), AS 2129, GOST 33259

Top Flange (Actuator Mounting): ISO 5211; GB 90°

Face-to-Face Dimension: MSS SP-81, EN 558-1, GB/T 12221

Testing Standards: API 598, MSS SP-81, ISO 5208, EN 12266-1

Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；

Technical description

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Q&A

Specification of the Valve

Valve Type	Heavy Duty Electric Actuated Knife Gate Valve
Connection	Flanged, Wafer, Lugged Type
Actuation	Electric Actuator (On/Off or Modulating, with Manual Override)
Size Range	DN50 ~ DN1200 (2" ~ 48")
Pressure Rating	PN0~PN16 / Class 125~150 / JIS 5K~10K
Target Medium	Abrasive Solid Particles, Heavy Slurry, Pulp, Cement, Ash
Operating Temp.	-20℃ ~ +200℃ (Depending on seating material selection)

Material Configuration

Body (Thickened)	Cast/Ductile Iron: GG25, GGG40, GGG50 Stainless/Carbon: CF8, CF8M, WCB (High safety margin)
Gate (Nitrided)	SS304, SS316 + Surface Nitriding Treatment (Extreme Anti-wear Hardness)
Stem	SS410, SS304, SS316
Seat (Soft/Metal)	EPDM, NBR, Viton, PTFE, or Metal-to-Metal Seal
Actuator Spec.	IP67/IP68 Protection, 220V/380V/415V, Integratable with DCS

Engineered for Severe Service: Optimal Applications

Combining a Thickened Body for exceptional pressure resistance, a Nitrided Gate for anti-scratch durability, and an Electric Actuator for DCS automation, this valve is designed for highly abrasive, high-consistency media. It guarantees long-lasting isolation where standard valves fail rapidly.

Mining & Mineral Processing

Ideal For: Slurry, Tailings, Coal Wash Water.
Why it fits: The Nitriding Treatment drastically increases the surface hardness of the stainless steel blade. It resists severe scratching from sharp quartz sand and mineral slags, preventing gate deformation and seal failure.

Pulp & Paper Industry

Ideal For: High-consistency paper stock, recycled paper mixtures.
Why it fits: The Thickened Body absorbs heavy pipeline vibration and water hammer forces typical in paper mills. The beveled gate easily shears through thick pulp and hidden impurities like staples or plastics.

Power Plants & Environmental

Ideal For: Fly ash slurry, FGD (Desulfurization) sludge.
Why it fits: Ash transport lines are highly abrasive. The nitrided gate ensures longevity, while the Electric Actuator enables seamless integration with the plant's DCS system for automated, unmanned operation.

Chemical & Building Materials

Ideal For: Cement slurry, dry powders, sticky/crystallized media.
Why it fits: The guillotine action forcibly cuts through crystallized buildup without jamming. The electric actuator provides high-torque output to overcome heavy operational resistance.

Wastewater Treatment

Ideal For: Sedimentation tank sludge, raw sewage.
Why it fits: Provides reliable On/Off isolation for thick municipal sludge. The robust body structure guarantees safety and zero deformation under continuous operational stress.

Application Limitations

NOT Recommended For:
• High-pressure gases or steam (Risk of severe leakage).
• Flow throttling (Partial opening causes rapid wear).
• Highly corrosive strong acids/bases (Nitriding is for wear, not chemical corrosion).
• Ultra-pure sanitary water (Single-direction seal, potential cavity residue).

QUALITY & COMPLIANCE CERTIFIED

Electric Knife Gate Valve with Nitrided Gate

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Sample MTC (EN 10204 3.1) - Material Traceability

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Electric Actuated Knife Gate Valve: Technical FAQs

What are the key features of an electric actuated knife gate valve with a nitrided gate?

This valve is engineered for severe service, combining smart automation with extreme durability:

Nitriding Treatment: The stainless steel gate undergoes a special hardening process, preventing scratches from quartz sand and hard particulates.
Thickened Body: A heavy-duty cast design offers superior safety margins, resisting high working pressures and pipeline water hammer impacts.
DCS Integration: The high-torque electric actuator allows for precise remote control, perfect for unmanned smart factories and pump stations.

Why should I choose JRVAL as the manufacturer for my electric actuated knife gate valve?

JRVAL is an ISO9001 & CE Certified source factory, not a trading company. Our core advantages include:

20 Years of Proven Reliability: Our valve structures and designs have been strictly verified by the global market for over two decades.
In-House Production: We integrate casting, precision machining, and assembly entirely in-house to guarantee strict quality control.
Cost-Effective Solutions: By controlling the full supply chain, we deliver premium automated severe-service valves at direct factory prices.

What abrasive media and industries are electric actuated knife gate valves suitable for?

Thanks to its hardened gate and powerful cutting action, this valve excels in handling difficult media:

Mining & Mineral Processing: Ideal for highly abrasive mine tailings, coal wash water, and mineral slurries.
Power Plants & Chemical: Reliably isolates fly ash slurry, FGD systems, cement, and dry powder materials.
Pulp & Paper: The guillotine edge effortlessly shears through high-density paper pulp and crystallized chemical media without jamming.

How does the powerful cutting action of the electric actuated knife gate valve prevent jamming?

The internal design is specifically optimized to prevent blockage and ensure complete closure:

Precision Beveled Edge: The bottom of the gate acts like a knife, pushing aside and shearing through solid particles rather than trapping them.
High-Torque Drive: The electric actuator provides consistent, forceful thrust, ensuring the valve cuts through thick media even after long periods of inactivity.
No Cavity Buildup: The flush bottom design prevents abrasive solids from accumulating in the seat area, maintaining a secure seal.