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Hardness Transition between HRC, HB and HV

This table is only a general reference for the hardness calculation between HRC, HB, and HV. Bosseal Valve is a professional valve manufacturer. For any technical or commercial support, please consider our teams at [email protected].

Chemical and Mechanical Requirements for Stainless Steel - ASTM A351 CF8M

For stainless steel (CRA) valves, ASTM A351 CF8M (Austenitic Stainless Steel) is mostly commonly used for casting of body&bonnet and other base materials of pressure-containing parts. Notes: All requirements are for standard material, for special requirements like NACE please refer to the relevant standard. Chemical Requirements Element % (max, except where a range is given) Material Grade C Mn Si P S Cr NiC Mo Co V N Cu CF8M J92900 0.08 1.50 1.50 0.040 0.040 18.0~21.0 9.0~12.0 2.0~3.0...

Chemical and Mechanical Requirements for Carbon Steel - ASTM A216 WCB

For carbon steel valves, ASTM A216 WCB is mostly commonly used for the casting of body & bonnet and other base materials of pressure-containing parts. Chemical Requirements Element % Material Grade C Mn P SB Si NiC CrC MoC CuC VC WCB D J03002 0.30 1.00 0.035 0.035 0.60 0.50 0.50 0.20 0.30 0.03 1. All values are maximums. 2. For lower maximum sulfur content, see Supplementary Requirement S52 3. Specified Residual Elements- Except when Supplementary Requirement S50 is specified,...

TAT Qualification Range for valves - MESC SPE 77-300 (2022)

The MESC SPE covers the requirements and methods for evaluating the performance of industrial valves when they are exposed to the limits of their design conditions. The performance requirements establish limits on the acceptability of a valve, regardless of size or pressure rating. The MESC SPE 77-300 specifies type acceptance testing requirements and a type acceptance test method for confirming the seat sealing, fugitive emission, and operating torque capability of a valve under pressure, during...

API 607 Fire Safe Qualification Range for Valves

API 607 is a standard to defined fire test procedure for Quarter-turn valves and valves equipped with nonmetallic Seats. (For metal seated valves refer to API 6FA.) This standard covers the requirements and method for evaluating the performance of valves when they are exposed to defined fire conditions. In production facilities, valves are typically of a higher rating and the pressure source is not easily reduced when a fire is detected. Therefore, for all other valves, the test pressure during...

The Unrivaled Simplicity and Convenience of Three-Piece Ball Valves

The three-piece ball valve, a common structural configuration in the realm of ball valves, stands out for its straightforward design and practicality. Comprising a main valve body sandwiched between two subsidiary valve bodies, this valve structure facilitates easy installation and disassembly. Widely adopted in both floating and fixed ball valve systems, the three-piece design provides flexibility and efficiency. 1.Structural Diversity The connection methods of the three-piece ball...

Floating Ball Valves: Structure, Features and Safety Design

Floating ball valves stand out as a widely utilized type of ball valves across diverse industries, distinguished by their innovative design incorporating a floating ball. This article delves into an in-depth exploration of the structure, distinctive characteristics, industrial applications, and safety design features inherent to this kind of ball valve. Basic Principles of Floating Ball Valves The ball in a floating ball valve is designed to float, enabling it to generate displacement...

Pneumatic Ball Valve Features and Pipeline Applications

A pneumatic ball valve is a sophisticated system composed of a ball valve and a pneumatic actuator, with the actuator classified into double-acting and single-acting types. The opening and closing actions of the ball valves are controlled through an electromagnetic valve. This valve system enables intelligent control, allowing rapid opening or closing of pipelines, effectively managing and controlling the pipeline network. Characteristics of Pneumatic Ball Valves Pneumatic ball valves...

Exploring the Versatility of Slab Gate Valves

Slab gate valve, renowned for their parallel gate design, has become an indispensable gate valve in various industries, offering a unique blend of efficiency and adaptability. This article delves into the features, applications, and selection principles of these gate valves, shedding light on their widespread use and the nuanced considerations that guide their deployment. Key Features of Slab Gate Valves Slab gate valves, known for their innovative design and efficient functionality,...

A Basic Understanding of Piston Check Valves

The Piston Check Valve stands out as a significant advancement in fluid control solutions, presenting a refined alternative to conventional lift check valve operations. In this exploration, we'll delve into the distinctive features, characteristics, and suggested applications that position Piston Check Valves as the preferred choice for individuals seeking precision and reliability in fluid control. Introduction to Piston Check Valves Piston Check Valves, similar to lift check...

Choosing Between Double and Triple Offset Butterfly Valves

Butterfly valves play a crucial role in various industrial applications, and the choice between different types of butterfly valve depends on specific process requirements, fluid characteristics, and environmental conditions. In this discussion, we explore the features and advantages of Double Offset Butterfly Valves and Triple Offset Butterfly Valves to help in making informed decisions. Double Offset Butterfly Valve: Advancements in Resilient Hard Sealing The double offset butterfly...

Trunnion Mounted Ball Valve: A Breakthrough in High-Performance Valve Technology

Trunnion mounted ball valve, a subtype of ball valves, stands out as robust counterparts to high-pressure ball valves, recognized as the next generation of high-performance valves. This valve is meticulously designed for application in long-distance pipelines and general industrial pipelines, with a particular focus on strength and resilience in harsh environments. Trunnion mounted ball valves excel in handling various corrosive and non-corrosive media. Trunnion Mounted Ball Valve Structure...

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About Us

Founded in 2013, Bosseal is a professional industrial valve manufacturer based in Suzhou, China. We specialize in the design and production of Ball Valves, Gate Valves, Globe Valves, Check Valves, Butterfly Valves, Plug Valves, and Piping Strainers. All our products are manufactured in strict compliance with international standards, including API, ASME, ISO, DIN, BS, and EN. With a strong focus on quality control and engineering capability, we are committed to providing reliable and high-performance valve solutions for global industrial applications.