KHB Hydraulic High-Pressure Ball Valve YJZQ Internal/External Thread Welded Ball Valve, Stainless Steel Pneumatic Ball Valve On/Off

Product Overview

This product is a high-pressure ball valve specifically designed for harsh working conditions. Its core features include welded or internal/external threaded connections, and the valve body is usually made of stainless steel to ensure reliable and durable shut-off performance in high-pressure, high-impact hydraulic systems or other medium pipelines. The "pneumatic" option in the product name indicates that the valve can be equipped with a pneumatic actuator to realize remote automatic on-off control.

Analysis of Core Features

1. High-Pressure Bearing Capacity

This is the primary feature of the valve. Designed specifically for hydraulic systems, it means its rated working pressure is much higher than that of ordinary water or gas ball valves, usually reaching 21MPa, 31.5MPa or even higher. The valve body is thickened and reinforced to withstand high internal pressure.

2. Multiple Connection Methods, Sturdy and Reliable

• Welded Type: Both ends of the valve body are welded interfaces, achieving a permanent connection by directly welding with the pipeline. This connection method has the best sealing performance and highest strength, ensuring absolute no leakage, and is suitable for ultra-high pressure, flammable and explosive pipelines or critical pipelines with extremely high leakage requirements.
• Internal and External Threads: Usually metric fine threads or American NPT tapered pipe threads. Threaded connection is more convenient for installation and disassembly than welding, and can also ensure high connection strength and sealing performance, suitable for occasions requiring maintenance or replacement.

3. High-Quality Materials and Durability

• Valve Body Material: Stainless steel (usually 304 or 316) provides excellent corrosion resistance, which can cope with water, hydraulic oil, corrosive gases and various chemical media, and extend the service life of the valve in harsh environments.
• Valve Seat and Seal: The valve seat usually adopts high-performance engineering plastics such as polytetrafluoroethylene (PTFE), reinforced PTFE or nylon, which provide excellent sealing and self-lubrication, and can withstand frequent on-off operations.

4. Modular Design (Meaning of "Pneumatic" Option)

• The valve body is a manual ball valve, but its top is designed with a standard interface (such as ISO 5211 standard platform), which can be easily equipped with pneumatic, electric or hydraulic actuators.
• When equipped with a pneumatic actuator, the valve is upgraded to a pneumatic ball valve, which can be controlled by a solenoid valve to realize fast remote automatic on-off (two-position on-off control), meeting the needs of industrial automation.

Technical Parameters (Typical Values, Subject to Actual Product Page)

•Valve Body Material: 304 Stainless Steel, 316 Stainless Steel
•Connection Method: Welded, Internal Thread (e.g., NPT, G), External Thread
•Nominal Diameter: DN6, DN8, DN10, DN15, DN20, DN25, etc. (usually small diameter)
•Pressure Rating: PN25MPa, PN40MPa or higher (e.g., 3000psi, 6000psi)
•Applicable Temperature: -20℃ to +200℃ (limited by sealing material)
•Applicable Medium: Hydraulic oil, water, gas, steam, weakly corrosive chemical media, etc.
•Drive Method: Manual lever/handle (standard configuration), optional pneumatic actuator (optional)

Typical Application Scenarios

•Hydraulic machinery and equipment: High-pressure oil circuits of injection molding machines, die-casting machines, construction machinery (excavators, cranes), hydraulic stations, etc.
•Petrochemical industry: Chemical transportation and process pipelines.
•Power station equipment: High-pressure water and steam systems.
•Natural gas equipment: Gas transportation and control.
•Automated production lines: As a key executive component in the pneumatic control circuit.

Purchasing Key Points Tips

When browsing the webpage, please be sure to confirm the following key information:
1.Pressure Rating: Ensure that the nominal pressure of the valve is higher than the maximum working pressure of your system, with a safety margin.
2.Connection Method and Size: Clarify whether you need welded or threaded connection? If it is threaded, is it NPT, G or metric? The interface size (e.g., 1/4 inch, 3/8 inch) must match.
3.Medium Compatibility: Confirm whether the stainless steel material and sealing material (such as PTFE) are suitable for your medium (especially corrosive chemicals).
4.Need for Pneumatic Actuator: If automatic control is required, confirm whether to purchase the valve body alone or the complete set of "valve + actuator". And clarify the air source pressure of the actuator, switch type (double-acting/single-acting) and other parameters.
5.Brand and Certification: "KHB" and "YJZQ" may be brand or series codes. Check whether the product has relevant quality certifications.