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Swing Check Valves: Structure, Operation and Maintenance Guide

Swing check valves, also referred to as one-way or non-return valves, play a pivotal role in preventing the reverse flow of media within pipelines. Operating on the principle of fluid dynamics and internal forces, these check valves automatically regulate the flow to prevent backflow, ensuring system integrity and safety. In this article, we will discuss the structural features, operating principles, as well as maintenance, installation, and usage guidelines for the swing check valve. Principle...

Comparing Soft Seal and Metal Seat Gate Valves

Soft seal gate valves and metal seat gate valves play pivotal roles in engineering applications, directly influencing the safety and efficiency of industrial production through their sealing performance. The structural disparities between the two types of gate valves highlight distinct advantages and considerations in various aspects. 1. Sealing Structure Soft seal gate valves feature a construction where one side comprises metal while the other side incorporates elastic non-metallic materials...

Essential Tips for Forged Steel Gate Valve Operation and Maintenance

Forged steel gate valves are indispensable key devices in pipeline systems, with their movement direction perpendicular to the fluid direction, allowing for full open and full close functions. In the conveyance of various media, the selection and maintenance of forged steel gate valves are crucial, as they not only affect the performance and stability of equipment but also directly impact the normal operation of industrial production. Here are some key considerations for operating and maintaining...

Gate Valve Leakage: Root Causes and Solutions

Gate valves, as one of the widely used industrial valves, play a crucial role in various engineering applications. However, due to their complex structure and unique operational environments, gate valve leakage issues are not uncommon, posing certain risks to industrial production. To gain a comprehensive understanding of gate valve leakage problems and effectively address them, it is necessary to delve into their root causes while exploring multiple handling solutions. Root Causes of Gate...

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 Carbon 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...

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About Us

Founded in 2013, Bosseal Valve is a professional valve manufacturing company in Suzhou, China. We mainly supply Industrial Ball Valves, Gate Valves, Globe Valves, Check Valves, Butterfly Valves, Plug VaIves, and Strainers designed and manufactured according to API, ASME, ISO, DIN, BS, EN standards.