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DELCO Z644TC Pneumatic Ceramic Double Gate Knife Gate Valve, Ceramic Seated Wear Proof for Slurry & Ash Handling System

Pneumatic knife gate valve with sharp blade design, air-driven actuation for fast on/off isolation of abrasive, solids-laden fluids (slurry, sludge). Wear-resistant, tight sealing, ideal for harsh industrial environments.

Nominal Size: DN50~DN1000
Applicable Medium: Mud, Material, Viscous, Granular Fluid
Connection Type: Flanged Type, Plum Blossom Type, Wafer Type
Pressure Rating: 0-6 1-6 4.0 6.4 (ANSI 150 300 600LB) (JIS 10 20 30 40K)
Operating Temperature: -30°℃ ~300°C
Body Material: WCB, CF8, CF8M, Castlron, Carbon Steel (WCB), Stainless Steel (CF8, CF8M)

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Product Details

Product Parameters

DELCO Pneumatic Knife Gate Valve is engineered for heavy-duty flow control in demanding industrial applications, specializing in handling viscous, abrasive, or solids-laden media that standard valves cannot efficiently manage. Powered by high-reliability pneumatic actuators, it combines rugged construction with precise automation, delivering consistent performance in harsh operating conditions.

Key Features & Advantages
1. Abrasion-Resistant Structure: Knife-edge blade made of hardened stainless steel (SS304/SS316) or ductile iron, paired with replaceable rubber/PTFE seats, ensuring long service life for slurry, sludge, or granular media.
2. Powerful Pneumatic Actuation: Air-driven operation provides fast, responsive on/off control (opening/closing time ≤5s), supporting automated process integration and reducing manual labor.
3. Unobstructed Flow Path: Full-port design minimizes pressure drop, preventing clogging by solids—ideal for media with high particle content.
4. Tight Sealing Performance: Soft/hard sealing options (rubber, PTFE, metal) ensure leak-proof isolation, meeting ANSI Class IV/V sealing standards.
5. Compact & Durable Build: Lug/wafer type structure saves installation space; body material (cast iron, ductile iron, stainless steel) resists corrosion and wear.

Core Functions
- Fast on/off isolation for abrasive/solids-laden fluids
- Automated flow control via pneumatic actuation (compatible with 4-20mA signal for modulation optional)
- Clog-resistant design for unobstructed media flow
- Tight sealing to prevent leakage in critical processes

Application Scenarios
Widely used in industries requiring reliable solids-handling and heavy-duty flow control:
• Wastewater Treatment (sludge, sewage, biosolids)
• Mining & Mineral Processing (ore slurry, tailings)
• Chemical & Petrochemical (viscous chemicals, catalyst slurries)
• Pulp & Paper (pulp stock, black liquor)
• Food & Beverage (fruit pulp, grain mixtures)
• Power Generation (coal ash slurry, flue gas desulfurization)
• Construction (cement slurry, concrete mixtures)

Parameter	Specification
Valve Type	Pneumatic Knife Gate Valve
Size Range	DN50 - DN600 (2" - 24")
Body Material	Cast Iron (GG25), Ductile Iron (QT450/600), Stainless Steel (SS304/SS316)
Blade Material	Stainless Steel (SS304/SS316), Hardened Steel, Ceramic-Coated Steel
Seat Material	Rubber (NBR/EPDM), PTFE, Viton, Metal (Stainless Steel)
Pressure Rating	PN10, PN16, ANSI Class 150
Temperature Range	-20℃ ~ +180℃ (-4℉ ~ +356℉)
Actuator Type	Double-Acting Pneumatic Actuator, Single-Acting (Spring Return)
Air Supply Pressure	0.4 - 0.8 MPa (60 - 116 PSI)
Operation Mode	On/Off Control, Modulating Control (Optional with Positioner)
Connection Type	Lug Type, Wafer Type, Flanged (PN10/16, ANSI B16.5)
Media Compatibility	Slurry, Sludge, Granular Solids, Viscous Fluids, Abrasive Liquids
Certifications	ISO 9001, CE, API (Optional)

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