In cold storage and commercial refrigeration systems, mismatched pipe diameter and solenoid valve size is a common cause of system inefficiency. Typical issues include:

• Unstable refrigerant flow control
• Increased pressure drop
• Frequent compressor cycling
• Reduced heat exchange efficiency

This is especially common in retrofits or multi-capacity systems where selection is based only on connection size.

The EVR / EVRA series offers connection sizes from 1/4'' to 2-1/8'', covering a wide range of refrigeration applications.

Best practice:

• Match valve size directly with pipe diameter
• Verify connection type (ODF, SAE flare, threaded, flanged)

Refrigeration systems often operate under fluctuating pressure conditions.

• Max working pressure: 35 bar

Why it matters:

• Ensures reliable shut-off under high pressure
• Prevents leakage and sealing failure

The valve must be compatible with system refrigerants.

• Supports CFC / HCFC / HFC

Recommendation:

• Verify compatibility with refrigerant type
• Ensure sealing materials are suitable

Even with correct pipe size, insufficient valve capacity can restrict flow.

Practical tips:

• Match valve capacity with compressor output
• Avoid undersized valves in large systems
• Consider flow distribution in multi-evaporator setups

• Use valves matching main liquid line size
• For larger pipes (≥1-1/8''), flanged connections are recommended

• Space constraints favor solder or flare connections

• Multi-voltage options (12V–220V AC/DC) improve global compatibility

• Selecting based only on connection size
• Ignoring pressure ratings
• Overlooking refrigerant compatibility

Proper solenoid valve sizing is essential for stable refrigeration system performance. By considering pipe diameter, pressure rating (up to 35 bar), refrigerant compatibility, and flow capacity, engineers can ensure reliable operation and avoid common system issues.