This is a triple-eccentric hard-seal stainless steel butterfly valve, large-diameter and high-pressure type. The main body is made of stainless steel, paired with blue drive control components. The overall structure is robust and suitable for fluid control in harsh conditions such as high pressure and high temperature. This triple-eccentric stainless steel butterfly valve belongs to the high-performance industrial valve category.

Parameters

Valve body material	CF8M
Applicable media	Oil,Gas,Water
Connection	Flange
Power	Electric/Pneumatic
Applicable temperature	High temperature
Warranty period	12 months
Support customization	OEM,OBM,ODM

Features

Triple eccentric structure

The valve stem axis is simultaneously offset from the center of the butterfly plate, the center of the valve body, and the valve seat sealing surface, achieving "frictionless disengagement" between the butterfly plate and the valve seat during opening and closing.

Metal hard seal

The valve seat and butterfly plate use a metal-to-metal seal (not rubber), which is temperature-resistant, pressure-resistant, and wear-resistant.

Large size parameters

DN600 (600mm diameter), Class 300 (nominal pressure rating), belonging to medium and large industrial valves.

Integrated drive assembly

The blue device is a pneumatic/electric drive mechanism (including control unit), supporting automated remote control.

Advantages

01.

Extreme operating condition adaptability

Metal seals can withstand high temperatures (typically ≥400℃), low temperatures, and corrosive media, offering a wider range of applications than rubber seals.

02.

Long seal life

Triple eccentricity + hard seal design reduces wear on the sealing surface, maintaining a reliable seal (high leakage level) even after long-term use.

03.

Strong high pressure resistance

Class 300 pressure rating, suitable for high-pressure pipeline systems, providing enhanced safety.

04.

Automation compatibility

Supports pneumatic/electric control, allowing integration with industrial control systems for unattended operation.

Application Scenarios

Primarily used in high-temperature, high-pressure, and highly corrosive industrial fluid systems, typical applications include:
1.Process media pipelines in the petrochemical industry (e.g., crude oil and chemical raw material transportation);
2.Steam and high-temperature water pipelines in the power industry (e.g., auxiliary systems of thermal power plants and nuclear power plants);
3.High-temperature gas and solution pipelines in the metallurgical industry;
4.High-pressure transmission networks for coal chemical and natural gas industries.

Certifications

ISO certification is not only a "qualification threshold" for our company, but also a comprehensive reflection of our company's quality, compliance and competitiveness, driving our company's transformation from "low-end manufacturing" to "high-end standardization".

Production Process

The production process of this triple-eccentric stainless steel butterfly valve belongs to the precision industrial valve manufacturing process. The core steps are as follows:

1. Raw Material Preparation

Purchase raw materials of the corresponding material according to the valve specifications and conduct material testing (spectral analysis, composition analysis) to ensure compliance with standards.

2. Component Machining

Valve Body/Butterfly Plate Machining: Machin the valve body and butterfly plate shape and sealing surface using forging and CNC lathes/milling machines to ensure dimensional accuracy.
Sealing Component Machining: The metal valve seat uses precision grinding to ensure the flatness of the sealing surface (accuracy down to the micron level).
Drive Component Machining: Machining transmission components such as the valve stem and bearings to ensure transmission accuracy.

3. Assembly and Debugging

Component Assembly: Assemble the valve seat, butterfly plate, valve stem, and bearings sequentially, then connect the pneumatic/hydraulic actuator.

Sealing Debugging: Verify the sealing performance through pressure tests (such as airtightness and water pressure tests) and adjust the linkage accuracy between the actuator and the butterfly plate.

4. Quality Inspection

Full-size inspection, pressure testing (pressure resistance at rated pressure), and leakage level testing (compliant with industry standards such as API), with a quality inspection report issued.

5. Surface Treatment and Packaging

Rust-proofing treatment (e.g., passivation, spraying) is applied to metal parts, followed by packaging according to industrial packaging standards (foam protection + wooden crate sealing) for shipment.
This process ensures the valve's accuracy, sealing performance, and durability, making it suitable for harsh high-pressure/high-temperature operating conditions.

Equipment List

Facilities	Supervisor	NO.of Operators	NO.of In-line QC/QA
Drilling	5	5	5
Polishing	5	5	5
Spraying	2	2	2
Assembly	8	10	8
Pack	6	6	6

Company Profile

SND is a leading valve manufacturer specializing in high-performance hydraulic control valves and innovative flow solutions. Leveraging international patents and technological collaborations, we strictly adhere to the ISO 9001 quality management system, ensuring zero defects in our products and earning recognition as an industry benchmark.

Our advanced automated manufacturing processes and integrated network management ensure product reliability and have been approved by China's construction authorities. With a nationwide sales and service network, we are committed to continuous innovation, developing next-generation valve technologies and providing globally leading, reliable, and efficient flow control solutions.