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2025-08-05

Classification, characteristics, maintenance and repair of hydraulic control valves

Classification, Characteristics, Maintenance and Repair Guidelines of Hydraulic Control Valves I. Classification System Hydraulic control valves are classified into various types through the combination of structure and function. The core classification logic is as follows: 1. By function classification Water level control valve: Applied in scenarios such as water tanks and water towers, it activates the valve to open or close through a float ball or pressure sensor to maintain

2025-08-05

The difference between the eccentric half-ball valve and the fixed ball valve

The eccentric half-ball valve and the fixed ball valve have significant differences in terms of structural design, sealing performance, application scenarios, and operational characteristics. The following is a detailed comparative analysis of the two: I. Structural Design 1. Eccentric Hemisphere Valve:

2025-08-05

How can one ensure that the direction of the butterfly plate is correct when installing a pneumatic butterfly valve?

When installing the pneumatic butterfly valve, ensuring that the butterfly plate is oriented correctly is crucial for maintaining the valve's sealing performance, ensuring smooth flow of the fluid, and ensuring the safe operation of the equipment. The following are the specific steps and precautions: I. Pre-installation Preparation 1. Confirm the flow direction of the medium Review the pipeline design drawings or proce

2024-09-30

Maintenance and servicing methods for check valves

Maintenance and servicing methods for check valves I. Maintenance Method 1. Leakage fault handling Seal inspection and replacement: If the seals (such as O-rings, gaskets) are aging, cracked or damaged, they should be replaced with components of the same original specification as soon as possible. Valve disc and valve seat repair: Inspect the mating surface of the valve disc and valve seat. If there is wear, scratches or corrosion, the surface smoothness should be restored using grinding tools, or the damaged parts should be replaced directly. Spring adjustment: For spring-loaded check valves, if t

2024-09-30

What are the types and classifications of ball valves?

The ball valve is a commonly used type of valve. It controls the flow of the medium by the rotation of the ball. It has the advantages of simple structure, convenient operation and good sealing performance. According to different classification criteria, ball valves can be divided into the following various types: I. Classification by Structural Form 1. Floating ball valve Feature: Under the pressure of the medium, the sphere will move towards the valve seat at the outlet end, achieving a single-sided forced sealing.

2024-09-30

What are the differences between fire valves and ordinary valves?

Fire valves and ordinary valves differ significantly in terms of design, materials, functions, application scenarios and safety levels. The detailed analysis is as follows: I. Design Standards and Certifications: Fire protection valves must pass strict certifications, while there are no special requirements for ordinary valves Fire valve: It must comply with national or in