Polyurethane Round Knife Gate Valve KPZ73PU

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

KPZ73PU

Keyword: Polyurethane Round Knife Gate Valve KPZ73PU

Category:

Wear-resistant series

Polyurethane knife gate valve

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Details

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.

Polyurethane Knife Gate Valve

kPZ73PU

■ Product Overview

Polyurethane ( PU ) It primarily features oil resistance, wear resistance, low-temperature resistance, aging resistance, high hardness, excellent elasticity, and good anti-toxicity performance, and is commonly... Suitable for pipelines conveying high-hardness particles as well as media containing gases and liquids, it features excellent sealing performance and high strength with outstanding wear resistance. Polyurethane. It is renowned as "wear-resistant rubber," and its oil resistance is no less than that of nitrile rubber, being comparable to polysulfide rubber. It is ideally suited for various media pipelines that demand both high sealing performance and resistance to high-intensity abrasive particle erosion.

Polyurethane knife gate valve

kPZ73PU

■ Product Overview

Polyurethane (PU) is primarily characterized by its resistance to oil, wear resistance, low-temperature performance, aging resistance, high hardness, excellent elasticity, and good anti-toxicity. It is often used in high-hardness components and medium-sized pipelines that convey both gases and liquids. PU boasts superior sealing performance and outstanding wear resistance. Polyurethane is widely known as "wear-resistant rubber," and its oil resistance is comparable to that of nitrile-butadiene rubber, being equivalent to polysulfide rubber. It is particularly well-suited for various types of medium-sized pipelines that demand high sealing performance and resistance to particle erosion under high-strength conditions.

Molding process	Content of main chemical components of polyurethane
High-pressure injection molding	Isocyanate Polycarbonate
Polyurethane Performance Parameters
Volumetric density g/cm3	Tensile strength N/mm	Shao's A Hardness	Fixed-extension mold N/mm2	Elongation at break %
1.21 + 0.02	Min 45	95 plus 5	Min 15	Min 300
Matching valve parameters
Main material	QT450, WCB, CF8, CF3M, 2205
Nominal diameter	DN50-DN1000
Applicable temperature	-29~+80℃
Operation method	Manual, electric, gear-driven, pneumatic, manual-pneumatic, hydraulic, electro-hydraulic, sprocket, lever
Applicable medium	Pulp, sewage, coal slurry, ash, granules, dust, and slag-water mixtures

The 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 uses matching components: long external hex bolts. *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.