The CQJ charging kit is a specialized tool for charging, replenishing, correcting, and checking the charging pressure of accumulators in hydraulic systems.
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The 5/8 UNF Charging kit is a high-pressure tool specifically designed for charging or filling hydraulic systems (such as accumulators) with nitrogen or gas. "UNF" refers to the thread specification of its connector.

The following is a detailed description of the UNF charging tool:
1. Core Definition
UNF is an abbreviation for "Unified Fine" (American Standard Fine Thread). This type of charging tool is primarily used to connect hydraulic accumulators or other equipment with American Standard threaded interfaces. The tool itself is typically a multi-functional kit containing a charging valve body, pressure gauge, hose, and interchangeable connectors.
2. Main Purpose
The core function of the UNF charging tool is to charge hydraulic accumulators with nitrogen (or gas cylinders). In hydraulic systems, accumulators require high-pressure nitrogen to store energy, and the UNF charging tool is essential equipment for this process.
3. Specifications and Features
Multi-functional Interface: In addition to UNF connectors (such as 7/8-14UNF, 5/8-18UNF, etc.), these tools are usually equipped with other international standard connectors such as M14, M28, and G1/4 to adapt to different brands and models of accumulators.
High Pressure Performance: The tools are equipped with high-pressure resistant pressure gauges and hoses, with common pressure ratings including 10MPa, 25MPa, 31.5MPa, or 40MPa.
Structure Composition: Generally consists of a carrying case, an impact-resistant pressure gauge, a miniature high-pressure hose (e.g., 2 meters), and an inflation valve body.
4. Application Scope
UNF inflation tools are mainly used for the maintenance and testing of hydraulic machinery, construction machinery (such as excavators and loaders), and industrial equipment.
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