Basic Functions and Applications
Connecting Function: As a tubular joint, it is typically used to connect the MPV end cover to other pipelines (such as control pipelines and pressure sensor pipelines), enabling gas flow or pressure signal transmission.
Adaptation Position: Installed on the end cover (COVER) of the minimum pressure valve, one end is connected to the threaded interface of the end cover, and the other end is connected to the control system, pressure gauge, or other auxiliary components via a flexible hose or rigid pipe.
Significance of the MPV System: The minimum pressure valve is a key component of the air compressor oil separation system, and this joint ensures the sealed connection between the MPV end cover and related control pipelines, ensuring accurate pressure signal transmission and stable system pressure.
Structure and Materials
Structural Form: Usually a metal short pipe with external threads (one or both ends with threads), some with a hexagonal nut head for easy installation and tightening, and the thread specification matches the interface of the MPV end cover (such as metric threads or imperial pipe threads).
Material Characteristics: Mostly made of brass or stainless steel, with good pressure resistance (able to withstand the pressure of the air compressor system, typically ≥ 16 bar), corrosion resistance (resistant to moisture and trace oil mist in compressed air), and sealing properties.
Common Problems and Replacement Precautions
Common Faults:
Wear or deformation of the threads causing loose connection and gas leakage.
Poor sealing at the connection between the joint and the end cover or pipeline, resulting in gas leakage (manifested as pressure drop, abnormal noise, or oil leakage).
Corrosion of the material (especially in humid environments) leading to a decrease in structural strength.
