Refrigeration Valves
The original PriWO refrigeration valve
for maximum efficiency and reliability.
The original based on the principle of Wolfgang Offenwanger
We supply the original PriWO refrigeration valve, featuring a unique operating principle that sets new benchmarks in refrigeration technology. Its servo-assisted design is engineered for the demanding conditions of refrigeration systems and heat pumps, ensuring exceptional performance, long service life, and precise control.
Technical features and advantages
To support your selection process, this section provides an overview of the key features of PriWO refrigeration valves.
Advantages of the PriWO principle
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Maximum efficiency: Servo-assisted precision enables accurate regulation and optimizes overall system performance.
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High pressure resistance: With pressure ratings up to 130 bar, the valves are ideally suited for modern refrigerants and high-pressure applications such as COâ‚‚.
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Robust quality: Manufactured from premium materials (standard: brass; optional: stainless steel), the valves undergo rigorous quality control to ensure long-term reliability.
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Exceptional Flexibility: A wide range of options for nominal size, actuation type, and connection configurations allows seamless integration into your system.
Typical areas of application
Air conditioning and refrigeration systems
Cold storage and integrated systems
Heat pumps
Industrial process cooling (e.g. in the food, chemical and pharmaceutical industries)
Structure and configuration
Design: Constructed as proven 2/2-way valves.
Mode of operation: Available as normally closed (NC) or normally open (NO).
Actuation: Servo-controlled for precise and reliable control
our cooling valves
For reliable performance and precise control
216 DN12-BU
Type 2/2-way
Actuation type servo-controlled
Nominal diameter 12.0 mm
Pressure range 0.1 - 30.0 bar
KV value 0.3 - 2.4 m³/h
Sealing material EPDM
Seat seal PTFE
Temperature medium -40 to +150°C
216 DN12-G
Design 2/2-way
Actuation type servo-controlled
Nominal diameter 12.0 mm
Pressure range 0.1 - 30.0 bar
KV value 0.3 - 2.8 m³/h
Housing material brass, stainless steel on request
Temperature medium -40 to +150°C
Connection G: Internal thread inch
216 DN12-LR
Design 2/2-way
Actuation type servo-controlled
Nominal diameter 12.0 mm
Pressure range 0.1 - 30.0 bar
KV value 0.3 - 2.8 m³/h
Housing material Brass
Temperature medium -40 to +150°C
Connection LR: soldering tube
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216 DN12-U
2/2-way design
Actuation type servo-controlled
nominal diameter 12.0 mm
pressure range 0.1 - 30.0 bar
KV value 0.3 - 2.8 m³/h
housing material brass
Temperature Medium -40 to +150°C
Connection U: external thread UNF
216 DN18-G
2/2-way design
Actuation type servo-controlled
nominal diameter 18.0 mm
pressure range 0.1 - 30.0 bar
KV value 4.5 - 6.5 m³/h
housing material brass
Temperature Medium -40 to +150°C
Connection G: Internal thread inch
216 DN18-LR
2/2-way design
Actuation type servo-controlled
nominal diameter 18.0 mm
pressure range 0.1 - 30.0 bar
KV value 4.5 - 6.5 m³/h
housing material brass
Temperature Medium -40 to +150°C
Connection LR: soldering pipe
216 DN25-G
2/2-way design
Actuation type servo-controlled
nominal diameter 25.0 mm
pressure range 0.5 - 30.0 bar
KV value 12.0 - 13.0 m³/h
housing material brass
Temperature Medium -40 to +150°C
Connection G: Internal thread inch
216 DN25-LR
2/2-way design
Actuation type servo-controlled
nominal diameter 25.0 mm
pressure range 0.2 - 30.0 bar
KV value 12.0 - 13.0 m³/h
housing material brass
Temperature Medium -40 to +150°C
Connection LR: soldering pipe
216 DN3-LRG
MikroCool
2/2-way design
Actuation type servo-controlled
nominal diameter 3.0 mm
pressure range 0.1 - 30.0 bar
KV value 0.2 m³/h
housing material brass
sealing material EPDM
seat seal special PTFE
Temperature Medium -40 to +150°C
Connection LRG: Solder pipe screwed on, LRG6, LRG1/4
216 DN5-G-HD
Powerful CO2 valve
2/2-way design
Actuation type servo-controlled
nominal diameter 5.0 mm
pressure range 0.1 - 130.0 bar
KV value 0.3 - 0.4 m³/h
Housing material stainless steel V2A
sealing material HNBR
seat seal special PTF
Temperature Medium -40 to +150°C
Connection G: Internal thread inch, G1/8, G1/4
216 DN5-LM-HD
Powerful CO2 valve
2/2-way design
Actuation type servo-controlled
nominal diameter 5.0 mm
Pressure range 0.1 - 130.0 bar
KV value 0.3 - 0.4 m³/h
Housing material stainless steel V2A
sealing material HNBR
seat seal special PTFE
Temperature Medium -40 to +150°C
Connection LM: solder sleeve, LM6, LM10, LM12, LM1/4, LM1/2
216 DN5-LR
2/2-way design
Actuation type servo-controlled
nominal diameter 5.0 mm
pressure range 0.1 - 30.0 bar
KV value 0.3 - 0.4 m³/h
housing material brass
Temperature Medium -40 to +150°C
Connection LR: soldering pipe
216 DN6-LRG
2/2-way design
Actuation type servo-controlled
nominal diameter 6.0 mm
pressure range 0.1 - 30.0 bar
KV value 0.3 - 0.5 m³/h
housing material brass
Temperature Medium -40 to +150°C
Connection LRG: Solder pipe screwed on
Frequently asked questions (FAQs) about refrigeration valves:
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Are the refrigeration valves designed for easy maintenance?
The refrigeration valves are designed for maintenance-friendly operation and long service life.​
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Do you offer customized solutions for special requirements?
We offer customized solutions for specific application requirements. Contact us to discuss your individual needs.
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What certifications do the refrigeration valves have?
The refrigeration valves comply with current industry standards and are certified according to ISO and CE, among others.​​​
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​Can the refrigeration valves be used in high-pressure applications?
The refrigeration valves are rated for pressures up to 130 bar, making them suitable for high-pressure applications. A newly developed valve for such requirements is now available.
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