Parallel Flow (Co-current Flow): Both fluids flow in the same direction. Temperature difference is highest at the inlet and decreases along the length. Counter Flow (Counter-current Flow): Fluids flow in opposite directions. Maintains a more uniform temperature difference, leading to higher efficiency. Cross Flow: Fluids flow perpendicular to each other. Commonly used in air-cooled heat exchangers. Shell and Tube Heat Exchanger: Consists of a series of tubes enclosed in a shell. One fluid flows through the tubes, and the other flows outside the tubes within the shell. Suitable for high-pressure and high-temperature applications. Uses thin, corrugated plates stacked together to create channels for fluid flow. Compact design with high heat transfer efficiency. Ideal for low to medium-pressure applications. Plate and Frame Heat Exchanger: A type of plate heat exchanger with a frame to hold the plates together. Allows for easy cleaning and maintenance. Plate-Fin Heat Exchanger: Uses fins sandwiched between plates to increase surface area for heat transfer. Common in aerospace and cryogenic applications. Spiral Heat Exchanger: Consists of two spiral channels wound around a central core. Compact and efficient for handling viscous fluids or slurries. Double Pipe (or Hairpin) Heat Exchanger: Simplest design with one pipe inside another. Suitable for small-scale applications or high-pressure scenarios. Direct Contact Heat Exchanger: Fluids come into direct contact with each other. Example: Cooling towers. Indirect Contact Heat Exchanger: Fluids are separated by a solid barrier (e.g., tubes or plates). Example: Shell and tube, plate heat exchangers. Regenerative Heat Exchanger: Uses a heat storage medium to transfer heat between fluids. Example: Rotary regenerators or fixed-matrix regenerators. Air Cooled Heat Exchanger: Uses air as the cooling medium. Common in power plants and refineries. Liquid Cooled Heat Exchanger: Uses liquid (e.g., water or oil) as the cooling medium. Condensers: Converts vapor into liquid by removing heat. Evaporators: Converts liquid into vapor by adding heat. Boilers: Generates steam by heating water. Single-Phase Heat Exchanger: Both fluids remain in the same phase (liquid or gas) throughout the process. Two-Phase Heat Exchanger: Involves a phase change (e.g., condensation or evaporation) in one or both fluids. Heat Exchange Unit,Heat Exchange Units,Heat Transfer Btu,Heat Exchange Units Home Siping Juyuan Hanyang Plate Heat Exchanger Co., Ltd , https://www.tj-heatexchange.com1. Based on Flow Arrangement
2. Based on Construction and Design
3. Based on Heat Transfer Mechanism
4. Based on Application
5. Based on Phase Change
3 PCS Bronze  Ball Valve with Lockable Handle
**Product Title:**
3 PCS Brass Ball Valve with Lockable Handle, 3-Piece Solder End Ball Valve, CW617N Brass Ball Valve – China Supplier
**Product Description:**
This is a high-quality 3-piece brass ball valve designed for various industrial and household applications. It features a lockable handle, making it ideal for water meter systems, plumbing, and flow control. The valve is constructed from forged brass (CW617N, CW614, CW602N, ASTM C37700), ensuring durability and reliability. The surface is either natural brass or chrome-plated, offering a sleek and corrosion-resistant finish.
**Key Features:**
- **Material:** Forged Brass (CW617N, CW614, CW602N, ASTM C37700)
- **Surface Finish:** Natural brass or chrome-plated
- **Size Range:** 1/4" to 4"
- **Connection Type:** Female thread x Female thread, FXM, MXM
- **Working Medium:** Water, oil, gas
- **Pressure Rating:** 3.0 MPa (Nominal), 2.0 MPa (Tested)
- **Temperature Range:** -20°C to 120°C
- **Thread Standard:** ISO228, ISO7/1, DIN2999
- **Seal Material:** PTFE (Teflon)
- **Handle Options:** Brass, zinc alloy, or aluminum handles available
- **Warranty:** 3 years
- **OEM/ODM Support:** Available
**Technical Specifications:**
Each valve undergoes rigorous testing with air pressure ranging from 0.6MPa to 0.8MPa. The valves are fully functional with full port design, ensuring minimal flow resistance. They are suitable for use in residential, commercial, and industrial settings, including water supply lines, pipelines, and metering systems.
**Packaging:**
Each valve is individually packed in a polybag, then placed in an inner box. The entire order is shipped on wooden pallets for safe delivery.
**Applications:**
Ideal for water meter installations, household plumbing, industrial piping, and flow control systems. The lockable handle helps prevent unauthorized access, making it perfect for anti-theft solutions.
**Why Choose Us?**
We prioritize quality and customer satisfaction. Our materials are sourced from trusted suppliers in Japan, Taiwan, and China, ensuring the highest standards. We use advanced machinery such as CNC lathes and Techmaflex crimping machines imported from France to ensure precision and consistency in production.
**Pre-Sale Service:**
- Fast delivery with full stock availability
- Accept OEM and ODM orders with custom logos and designs
- Competitive pricing, fast response, and reliable service
- Professional manufacturing team and experienced export staff
**After-Sale Service:**
- We welcome all feedback and suggestions
- Free support via email or phone
- Tracking information provided after shipment
- Assistance with tracking until delivery
**Contact Us:**
For more details or to place an order, visit our websites:
[www.junyuan-group.com](http://www.junyuan-group.com) | [www.xbvalve.net](http://www.xbvalve.net)
Whether you're looking for a standard product or a custom solution, we are here to provide you with the best options and support. Let us help you find the right valve for your needs!
Heat exchange units, also known as heat exchangers, are devices designed to transfer heat between two or more fluids without mixing them. They are widely used in various industries, including HVAC, power generation, chemical processing, and refrigeration. Below is a classification of heat exchange units based on their design and operation: