Bidirectional Soft-Sealed Knife Gate Valve Z43X

Valves of this type should generally be installed horizontally in piping systems.

Keyword: Bidirectional Soft-Sealed Knife Gate Valve Z43X

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Ductile iron

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When a gate valve is closed, the sealing surfaces rely solely on the pressure of the medium to achieve a seal—specifically, the sealing surface of the gate is pressed against the valve seat on the opposite side by the medium’s pressure, thereby ensuring a tight seal. This type of sealing is known as self-sealing. By contrast, most gate valves employ forced sealing: when the valve is closed, an external force is used to press the gate against the valve seat, guaranteeing the sealing performance of the sealing surfaces. Such valves should be installed vertically in the pipeline.

Performance

1. The valve can be locally and remotely controlled according to user requirements, and can also provide remote and centralized display.

2. Lightweight: The valve body is made of carbon steel, making it approximately 20%–30% lighter than conventional gate valves, which facilitates installation and maintenance.

3. Using this type of valve can enhance the sealing performance of pipeline systems, minimizing leaks to the greatest extent possible, thereby playing a positive role in improving production efficiency and protecting the environment.

4. The sealing surface is designed with a highly wear-resistant and corrosion-resistant ceramic composite material, using an inlaid technology. This results in superior corrosion resistance and excellent wear resistance, significantly extending the service life of China’s valves and increasing their cost-effectiveness by a factor of 10 compared to conventional valves.

Double-acting soft-sealed knife gate valve

Z43X-16Q-DN50-1200

■ Product Overview

Integrated The double-acting soft-sealed knife gate valve is a high-performance product. Bidirectional pressure-bearing valve 。 Adopting a bidirectional sealing design, it can achieve reliable sealing when the medium flows in both directions. And pressure-bearing 。 The precision-cast monolithic structure can withstand high pressure differentials, negative pressure differentials, and more.

■ Structural feature Point

• Structure Design: The valve features a bidirectional sealing structure that ensures reliable sealing regardless of the direction of media flow.

• Sealed design : The bottom of the valve body cavity is equipped with... U-shaped sealing strip with steel wire lining inside, ensuring long-term stable operation under high-pressure differential conditions.

• Sealing principle: The U-shaped sealing strip between the gate and the valve seat provides a tight fit, achieving bidirectional sealing. The elastic design of the sealing strip compensates for minor deviations on the sealing surfaces, ensuring reliable sealing performance.

• Wear-resistant materials: The sealing surfaces typically use wear-resistant materials such as rubber or polyurethane, which offer excellent wear resistance and corrosion resistance.

Valve Basic Parameters
Main material: QT450、GGG40、GGG50	Nominal diameter: DN50-1200mm
Gate material: 201、304、316L、2205、2507	Nominal pressure: 1.0MPa-1.6 MPa 、150Lb
Valve seat material: EPDM 、 FKM 、 PU	Leakage rate: Soft sealing A Level (Zero Leakage) )
Drive configurations: hydraulic, electro-hydraulic, electric actuator, bevel gear, pneumatic, and others.	Operating Condition Recommendations: Mining, Metallurgy, Water Conservancy, Papermaking
Applicable temperature: -38 Celsius ~+200 Celsius The specific temperature range depends on the material of the sealing pair and the properties of the medium. For details on other parameters, please consult our company.

• Groove-free design: The valve body features no internal grooves, preventing media accumulation and reducing the risk of blockage.

• Full-bore flow path: The valve’s internal flow path is unobstructed, allowing smooth media flow and reducing pressure loss.

Valve installation is shown in the diagram.

Schematic diagram of required accompanying components:

For blind hole installation, use the matching component: short external hexagonal bolt. *n Hexagon nut *n Flat washer or spring washer *n
Through-hole installation using matching components: long external hexagonal bolt *n Hexagon nut *n Flat washer or spring washer *n
Metal-wound gasket or rubber gasket *2 Each valve per piece
Torque wrench *2

Note: n the number of = For the number of bolt holes and bolt lengths, please consult our technical staff.