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Help CenterCB/T3191 Standard Bronze Ball Valve DN50 PN2.5MPa With Mill Test Report
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As a leading manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T3191 Standard Bronze Ball Valve in DN50 size, rated for PN2.5MPa. Engineered for reliability in demanding industrial and marine applications, this valve combines robust bronze construction with precision engineering to ensure long-lasting, leak-free performance. We understand that our global clients in markets from North America to Southeast Asia require components that deliver uncompromising safety and durability, which is why each valve is backed by a comprehensive Mill Test Report, providing full traceability and peace of mind.
This valve is designed to offer superior flow control with a simple quarter-turn operation. Its full-port design minimizes pressure drop, making it highly efficient for a wide range of services.
- Durable Bronze Body: Manufactured from high-grade bronze alloy (typically C95800), offering excellent corrosion resistance against seawater, fresh water, and many industrial fluids, ensuring a long service life even in harsh environments.
- Precision Machining: All components are machined to tight tolerances in accordance with the CB/T3191 standard, guaranteeing perfect fit, smooth operation, and reliable sealing.
- Advanced Seat Design: Features PTFE or reinforced PTFE seats, providing a bubble-tight seal, low operating torque, and excellent chemical resistance for consistent performance.
- Robust Stem Design: The blow-out proof stem is securely integrated into the valve body, enhancing safety and preventing stem ejection under high pressure.
- Versatile End Connections: Standard flanged ends (as per relevant standards like GB, ANSI, or JIS) ensure easy installation and compatibility with existing piping systems. Other connection types are available upon request.
- Operational Flexibility: Standard lever handle for quick manual operation. For larger sizes or higher pressure applications, a gear operator can be supplied as an optional accessory for easier actuation.
The technical specifications of the CB/T3191 Bronze Ball Valve DN50 PN2.5MPa are detailed below:
| Parameter | Specification |
|---|---|
| Design & Manufacturing Standard | CB/T3191 |
| Nominal Diameter (DN) | 50 (2") |
| Pressure Rating (PN) | 2.5 MPa (Class 150) |
| Body Material | Bronze (C95800 / UNS C95800) |
| Ball & Stem Material | Bronze / Stainless Steel (Optional) |
| Seat & Seal Material | PTFE / Reinforced PTFE |
| Operation Temperature | -20°C to 180°C (depending on seat material) |
| Operation | Lever Handle (Standard), Gear Operator (Optional) |
| End Connection | Flanged (Standard), Threaded/Socket Weld (Customizable) |
| Test & Inspection | Shell Test, Seat Test, Mill Test Report Provided |
Choosing our bronze ball valve brings significant advantages to your operations. Its corrosion-resistant construction reduces maintenance frequency and replacement costs. The full-port design ensures minimal flow restriction, improving system efficiency. Furthermore, the provision of a Mill Test Report with each unit offers complete material traceability and quality verification, which is crucial for project documentation and compliance audits in industries like shipbuilding, chemical processing, and power generation.
With an annual export value ranging between US$1 Million and US$1.5 Million, Shanghai Zhibang Valve has established a strong reputation for quality and reliability across diverse markets including North America, Eastern Europe, Southeast Asia, and Africa. Our ISO9001 certification underpins every stage of production, from raw material sourcing to final testing. We offer flexible shipping from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing to ensure timely delivery worldwide. For a valve that combines proven standards, documented quality, and robust performance, contact us today to discuss your requirements or request a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: What is the CB/T3191 standard, and is it internationally recognized?
A1: CB/T3191 is a Chinese national standard specifically for marine bronze ball valves. It is widely recognized and accepted in international marine and industrial projects, especially in markets across Asia and among global shipbuilders who specify materials and standards for corrosion resistance and reliability.
Q2: Does the Mill Test Report (MTR) cover all valve components?
A2: The primary Mill Test Report provided typically details the chemical composition and mechanical properties of the main body material (bronze casting). For critical components like the ball and stem, material certificates can be supplied upon request to ensure full compliance with your project specifications.
Q3: Can this DN50 PN2.5MPa valve be used for steam service?
A3: While bronze has good general properties, the standard PTFE seats have a temperature limit. For low-pressure steam applications, it may be suitable, but it is crucial to confirm the exact temperature and pressure conditions. Alternative seat materials with higher temperature ratings can be explored as a customization option.
Q4: Are the flanges compatible with ANSI or DIN standards?
A4: The standard offering is typically with flanges per GB (Chinese National Standard) dimensions, which are often compatible with certain ANSI or JIS pressure classes. For guaranteed compatibility with specific ANSI B16.5 or DIN standards, please specify your requirement at the time of inquiry, as this is a customizable feature.
Q5: What is the lead time for an order of these valves?
A5: For standard DN50 PN2.5MPa valves, we generally maintain stock or can produce them with a relatively short lead time. The exact lead time depends on the order quantity and any specific customizations (like gear operators or special flange standards). We provide accurate lead time estimates with every quotation.
Q6: Do you offer actuated versions of this ball valve?
A6: Yes, we can provide this bronze ball valve equipped with pneumatic or electric actuators. This is a common customization to enable remote or automated flow control. Please provide your actuation requirements (air supply pressure, voltage, signal type) for a tailored solution.
Q7: What kind of packaging is used for export shipment?
A7: Each valve is individually packaged in a sturdy cardboard box or wooden crate, with protective caps on the flanges to prevent damage during transit. For sea freight, palletization and container loading are arranged to ensure safe arrival at destinations worldwide from our shipment ports.
Q8: Is the PN2.5MPa rating suitable for both liquid and gas services?
A8: Yes, the pressure rating of PN2.5MPa (approximately 363 psi) applies to the valve's pressure-containing capability for both liquid and gas media, within the specified temperature limits of the seat and seal materials. Always verify media compatibility with the valve materials for your specific application.
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