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Pneumatic Wafer Knife Gate Valve

knife gate valves are available in various designs,one-piece body and two-piece bodies,wafer,lug and flange connection, rising stem and non-rising stem,unidirectional and bidirectional seal, soft seat and metal seat, bonnetless and bonneted designs.

knife gate valves are available in various designs,one-piece body and two-piece bodies,wafer,lug and flange connection, rising stem and non-rising stem,unidirectional and bidirectional seal, soft seat and metal seat, bonnetless and bonneted designs.

knife gate valves are available in various designs, one-piece body and two-piece bodies, wafer, lug and flange connection, rising stem and non-rising stem,unidirectional and bidirectional seal, soft seat and metal seat, bonnetless and bonneted designs.

knife gate valves are a special type of gate valve designed for rugged and reliable applications where a shutoff mechanism is required to handle thick, viscous or abrasive fluids, slurries or powders.
knife gate valves are essential for reliable shutoff of abrasive, viscous or solids-laden fluids. Their rugged construction, coupled with an effective sealing mechanism, makes them suitable for challenging environments where conventional valves may fail. Proper selection, installation and maintenance are essential to ensure optimal performance and longevity.
Durable Construction: This knife-edge gate valve is crafted from carbon steel, ensuring strong and long-lasting performance in hydraulic engineering applications.

Customization Options: Available in a variety of sizes, including customer-requested sizes, this valve can be tailored to meet specific requirements, making it an ideal choice for businesses with unique needs.

Wide Temperature Range: With an operating temperature range of -10 °C to + 200 °C, this valve can handle a wide range of applications from cryogenic to medium-temperature environments.

Compliance with International Standards: Manufactured in accordance with ISO 9001:2015 standards, this valve meets international quality standards, providing assurance for its reliability and performance.

Comprehensive Support: With OEM and ODM support available, businesses can rely on the manufacturer to provide customized solutions, ensuring the valve integrates seamlessly into their operations.

Technical Specifications of Ductile iron Wafer Knife Gate Valve
Size Range DN 50~1200mm  NPS 2”-48”(Large diameter on request)
Design Options Unidirectional or Bidirectional Seal;

Rising Stem or Non-rising stem

Body Material GGG40, GGG50
Knife Material SS304, SS304L, SS316, SS316L, SAF2205, SAF2507

or other requested

Seat Material NR:70°C  NBR:80°C    EPDM: 120°C   PTFE: 150°C

Viton/FKM: 180°C   Metal seat: SS304/316+Stellite ≥ 200°C

Applicable Standards Design & Manufacture: MSS SP-81

Face to Face: MSS SP-81/ EN558-1 Series 20

Flange connection: ASME B 16.5, EN1092-1, AS2129 “D”/”E”

(Other connections on customers’ request)

Test: MSS SP-81

Operation

Options

Lever/Handwheel/Bevel Gear/Chainwheel

Pneumatic/Hydraulic/Electric actuator

Applications Pulp & Paper / Water & Waste Water/Mining/Metallurgy

/Petrochemical /Printing & Dying / Pharmacy/ Beverage& Food

Ceramic valves are suitable for opening and closing of pipes with high hardness particles, such as ash, slag water, pulverized coal, or soft particles but corrosive media. The sealing surface is made of high-grade toughened industrial ceramics. Its chemical stability and hardness are very high.

It has high wear resistance, corrosion resistance and erosion resistance. It also has good thermal insulation, small thermal expansion, high mechanical strength, low starting load, less ash jamming and ash deposit, and long service life Advantage.The solid valve body design can avoid valve body perforation and leakage caused by high-speed medium erosion.

Molding process Main chemical components of alumina 95 ceramics
Isostatic pressing Zr02:94.6%   Y203:4.7-5%  R0:0.4-0.7%
Performance parameters of ceramics
Volume density g/cm3 Flexural strength (Mpa) Compressive strength (Mpa) Tensile strength (Mpa) Average linear expansion coefficient
6.02g/cm 998 2100 400 10.5×10/C
Supporting valve parameters
Main material QT450, WCB, CF8, CF3M, 2205
Nominal diameter DN50-DN1000
Applicable temperatur Tem:-29~+350℃
Operation mode Manual, electric, gearbox, pneumatic, manual pneumatic, hydraulic, electro-hydraulic, sprocket, lever
Applicable medium Pulp, sewage, coal slurry, ash, particles, dust, slag water mixture

 

Qualification certificate

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Technical Specifications of Ductile iron Wafer Knife Gate Valve
Size Range DN 50~1200mm  NPS 2”-48”(Large diameter on request)
Design Options Unidirectional or Bidirectional Seal;

Rising Stem or Non-rising stem

Body Material GGG40, GGG50
Knife Material SS304, SS304L, SS316, SS316L, SAF2205, SAF2507

or other requested

Seat Material NR:70°C  NBR:80°C    EPDM: 120°C   PTFE: 150°C

Viton/FKM: 180°C   Metal seat: SS304/316+Stellite ≥ 200°C

Applicable Standards Design & Manufacture: MSS SP-81

Face to Face: MSS SP-81/ EN558-1 Series 20

Flange connection: ASME B 16.5, EN1092-1, AS2129 “D”/”E”

(Other connections on customers’ request)

Test: MSS SP-81

Operation

Options

Lever/Handwheel/Bevel Gear/Chainwheel

Pneumatic/Hydraulic/Electric actuator

Applications Pulp & Paper / Water & Waste Water/Mining/Metallurgy

/Petrochemical /Printing & Dying / Pharmacy/ Beverage& Food

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Contact Us

TelePhone

+86 13729936450

E-mail

inquiry@covna-china.com

Location

Building C,Longchang Micro Chuangyuan,N0.26 Hantang Street,Dongcheng District,Dongguan,City,China

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