This coaxial heat exchangers have tube-in-tube and twisted inner tube design. water-source heat pump coils operate very effectiv

Specifications:

water-source heat pump coils operate very effectively as either refrigerant condensers or refrigerant evaporators when transferring heat with water. This makes them an ideal choice for both water-source heat pump and water-cooled condenser applications

Standard sizes are available in space saving shapes for nominal 1/2 through 30 ton systems. Standard models are available with either copper or 90-10 cupronickel inner tubes surrounded by steel outer tubes (shells). Copper inner tubes are recommended for fresh and cooling tower water applications while cupronickel is recommended for ground and sea water applications.

1) Water side pressure: 400PSI
2) Refrigerant pressure: 500PSI
3) Inner tube: coaxial corrugated copper tube or cupronickel 90/10
4) Outer tube: seamless steel tube
5) Connections: pointed tube end can fit various connection diameters
6) Installation: supports structure can fit your position and screw hole
diameter, the roll diameter can put various compressors 
7 Specialized for heat pump

Advantages:
1) Increases heat transferring rate
2) Prohibits solid formation of fluid
3) Helpful to evaporator oil collection
4) Suitable for various connections
5) Specialized for heat pump
6) Saves space
7) More durable
8) Easy installation
9) Easy clean

Outer packing:
Wooden case