Product Description

Product Overview & Video Demonstration

The Z45X Large Diameter Ductile Iron Non-Rising Stem Resilient Seated Gate Valve is engineered for reliable fluid control in demanding applications, including municipal water supply networks, sewage treatment facilities, and industrial piping systems. Designed to overcome common sealing failures found in traditional valves, this resilient seated gate valve offers a secure shut-off, minimal maintenance requirements, and an extended operational lifespan. Its robust construction and advanced sealing technology make it a dependable choice for large-scale infrastructure projects aiming to reduce long-term operational risks and maintenance costs. 

6 Core Features & Advantages

1. Flat-bottom Valve Seat

Traditional gate valves often suffer from poor sealing due to foreign objects—such as stones, welding rod ends, welding slag, and cement—getting trapped in the bottom grooves after pipeline installation and flushing. The Z45X resilient seated gate valve adopts a flat-bottom design that is entirely consistent with the pipeline bore. This innovative structure prevents debris accumulation, ensures smoother fluid flow with minimal resistance, and significantly extends the service life of the valve by preventing damage to the sealing surface.

2. Full Rubber Coating on Gate Plate (Wedge)

The internal ductile iron gate plate is fully encapsulated with high-quality rubber, covering both its internal and external surfaces. Utilizing advanced domestic rubber vulcanization technology, the manufacturing process ensures precise geometric dimensions of the wedge after vulcanization. This results in a firm, reliable bond between the ductile iron core and the rubber coating that resists peeling or detaching during operation, while providing excellent elasticity for a bubble-tight seal.

3. Superior Corrosion Resistance

To combat harsh environmental conditions and aggressive media, the entire ductile iron valve body is thoroughly coated with electrostatically applied epoxy resin powder. This thick, uniform coating effectively prevents internal and external corrosion and rusting. The non-toxic coating meets national hygienic standards for drinking water systems, while its chemical resistance also makes it highly suitable for demanding sewage and wastewater treatment applications.

4. Multi-channel O-ring Stem Seal Design

The non-rising stem is equipped with a multi-channel O-ring sealing system. This specialized design minimizes friction resistance during the opening and closing cycles, ensuring smooth operation while significantly reducing the risk of water leakage around the stem. Depending on specific project requirements, this system can be upgraded to an online maintenance configuration (self-sealing type), allowing operators to safely replace the sealing rings and packing while the pipeline remains fully pressurized.

5. Precision Cast Valve Body

The main valve body is manufactured using an advanced precision casting process. This method guarantees highly accurate geometric dimensions and a flawless internal surface finish. Because of this precision, the valve achieves outstanding sealing performance directly from the casting mold, eliminating the need for secondary internal machining and ensuring structural integrity.

6. Lightweight and High Strength

Thanks to the integral precision casting of high-grade ductile iron, the valve body offers an exceptional strength-to-weight ratio. It is significantly lighter than traditional cast iron valves without compromising on pressure-bearing capacity or durability. This lightweight characteristic simplifies transportation, reduces installation labor, and eases ongoing maintenance procedures for large-diameter piping networks.

Technical Parameters & Dimensions

1. Execution Standards: Flange connection strictly complies with the standards of GB/T 17241.1-2024 and GB/T 9124.1-2019.

2. Testing Standards: Strength and sealing tests are conducted in full compliance with the standard of GB/T 13927-2022 to guarantee reliable field performance.

3. Data Reference: Please refer to Table 1 for relevant technical parameters, Table 2 for main component materials, and Table 3 for overall dimensions required for pipeline integration.

Product Collection

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