China Top 10 Knife Gate Valve Manufacturer – Customized for Oil & Gas Industry

• Customization: Available
• Media: Fluid,Abrasive Media,Viscous Liquids,Solid-Liquid
• Temperature: Low Temperature
• Model NO.: DN80 Pneumatic Through-Conduit Knife Gate Valve
• Type: Direct-acting
• Material: Carbon Steel
• Connection Form: Clamp
• Pressure: Ordinary Pressure
• Actuator: Pneumatic
• Seal Surface: Parallel Gate Valve
• Thread Position of Valve Rod: Outside Gate Valve
• Usage: Regulation, Emptying, Drain, Temperature Control, Flow Control
• Standard: DIN
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Transport Package: Plywood Cases
• Trademark: HW
• Origin: China
• HS Code: 8481804090
• Production Capacity: 5000pieces/Month
• Package Size: 25.00cm * 20.00cm * 15.00cm
• Package Gross Weight: 5.500kg

Product Description

Product Description

The knife gate valve is a linear-motion on/off shut-off valve characterized by its aesthetic appearance, lightweight design, and compact structure. It can be operated manually or equipped with a pneumatic actuator and proximity switch for remote control. 

Specification

Key Configurations

Nominal Diameter: DN80 ~ DN600

Nominal Pressure: 1.0MPa, 1.6MPa, ANSI 150LB

Temperature Ranges: -29℃ ~ 100℃, -29℃ ~ 230℃

Air Supply Pressure: 0.5 ~ 0.7MPa

Connection Type: Wafer (Clamp) Type

Valve Components Material Specifications

Component                 Material Options
Valve Body                         WCB / CF8 / CF8M
           Disc                          410+Cr / 304+Cr / 316+Cr
           Seat                          304+Cr/STL / 304+Cr/STL / 316+Cr/STL
           Stem                         45# Carbon Steel+Cr (all options)
       Packing                         PTFE/Graphite

Technical Specifications

Pneumatic Through-Type Knife Gate Valve Outline Dimensions

DN(mn)	A (mm)	B (mm)	C (mm)	L(max,mm)	H (mm)
200	70	350	130	570	570
250	70	410	140	630	630
300	76	470	160	710	710
350	76	550	200	810	810
400	89	620	210	910	910
450	110	700	220	1000	1000
500	114	730	220	1110	1110
600	134	860	250	1280	1280

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

Applications

 The blade-shaped gate at the bottom provides exceptional cutting force, making it ideal for media containing fibers and suspended particles. Consequently, this product is widely used in

1.Paper manufacturing

2.Wastewater treatment

3. Mining Sugar production

4.Synthetic fiber industries

 Design Features

1.Built-In Packing Chamber

   Utilizes rubber packing for enhanced sealing reliability. A self-locking nut       prevents loosening during prolonged operation.

2.Point-Type Guide Block

   The gate is guided by nylon point-type blocks, ensuring stable movement.      A smooth transition at the port base minimizes residue buildup and                reduces operational failures.

3.Blade-Arc Gate

    The blade-shaped arc design at the gate base delivers superior cutting            performance, particularly for pulp and fiber-rich media. After precision            grinding, the gate undergoes hard chrome plating for exceptional wear            resistance and corrosion resistance.

4. Movable Seal Seat

   Features a spring-loaded O-ring to maintain preload force, ensuring tight       contact between the seat and gate. Automatic compensation for wear           during long-term use extends service life. Options include metal seats,           PTFE, or EPDM seats to suit diverse operating conditions.

5. Multi-Flow Port Configurations

   Sealing ports can be designed as V-shaped, triangular, or pentagonal to        meet varying flow regulation requirements.

After Sales Service

Standard Warranty: 12 months 
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

Shandong Huawo Fluid Equipment Co., Ltd

Your Trusted Partner in Precision Fluid Control Solutions.  

Founded in 2008 in Jinan, China's iconic "Spring City," Shan Dong Huawo is a National High-Tech Enterprise dedicated to the integrated R&D, design, production, and sales of industrial fluid automation control systems. For over 15 years, we have pioneered advancements in fluid control technology, driven by our mission to deliver unmatched precision, stability, and reliability for global industries.

Why Choose Us?

Other Products

Industry Leader:

- Leading Chinese manufacturer of automated valves and electric actuators, trusted by clients in 30+ countries.  

- 30+ utility patents and provincial quality certifications ensure cutting-edge innovation.  

Certified Excellence: 

- Triple ISO Certifications: ISO 9001 (Quality), ISO 14001 (Environment), ISO 45001 (Safety).  

- TS Special Equipment License | SIL 3 Certification | ATEX Explosion-Proof Compliance.  

- Honors: National High-Tech Enterprise, AAA Credit Rating, "Specialized & Innovative" SME. 

End-to-End Manufacturing:  

-Full-cycle production from prototyping to mass manufacturing with 100+ advanced facilities, including CNC machining centers, ultrasonic testers, and torque analyzers.  

-Rigorous quality control: Raw material inspection → precision machining → 24-hour pressure testing → final certification.  

Core Products 

Valves  

- Smart Control Valves: Full Port Ball Valves, V-Port Ball Valve, Control Valves , Micro-Flow Valves, Knife Gate Valves,Butterfly Valves, Diaphragm Valves, and Mix-Proof Valves.  

- Heavy-Duty Solutions: Gate Valves | Globe Valves | Rotary Valves | Discharge Valves (Pressure: ≤10MPa, Temperature: -196°C to 650°C).  

Actuators  

-Explosion-Proof Electric Actuators: ATEX/IECEx certified for hazardous environments.  

-Standard Actuators: Torque range 50Nm–2000Nm, IP68 waterproof rating.  

- Customization: Modular designs for OEM/ODM projects. 

FAQ

Q: What types of valves do you manufacture?

A: We specialize in gate valves, globe valves, ball valves, butterfly valves, and check valves, available in various materials including stainless steel, carbon steel, and special alloys.

 

Q: Are your electric actuators compatible with different valve brands?

A: Yes, our actuators are designed to ISO standards and can be adapted to fit most major valve brands through customizable mounting kits.

 

Q: What certifications do your products have?

A: Our products are CE, ISO 9001 certified, and comply with API, ANSI, and other international standards. Specific certifications available upon request.

 

Q: Can you provide explosion-proof actuators for hazardous areas?

A: Absolutely, we offer ATEX and IECEx certified explosion-proof electric actuators suitable for Zone 1 and Zone 2 hazardous environments.

 

Q: What is your production lead time?

A: Standard products: 15-30 days after order confirmation. Custom solutions may require 30-45 days. Rush services available for urgent projects.

 

Q: Do you offer smart valve solutions with IoT capabilities?

A: Yes, we provide intelligent actuators with Modbus, Profibus, or wireless connectivity for remote monitoring and control.

 

Q: What warranty do you provide?

A: We offer 12-month warranty for valves and 12-month warranty for actuators, with extended warranty options available.

 

Q: Can you assist with valve and actuator selection for specific applications?

A: Our engineering team provides free technical consultation to help select the optimal valve-actuator combination for your system requirements.

 

Q: What after-sales services do you offer?

A: We provide installation guidance, maintenance training, spare parts supply, and emergency technical support via email/phone.

 

Q: How do you handle international shipments?

A: We arrange sea/air freight with proper export packaging (wooden crates for valves), handle all customs documentation, and provide door-to-door logistics solutions.