Pressure relief valve
1/8 - 1/4", 400 psig | 500 series Circle Seal Controls

Features
Popoff or inline valves
Adjustable crack pressure
Zero leakage
Optional factory preset
Accurate set pressure
Wide range of cracking pressure
Tamper-proof adjustment
100% seat leakage tested
PED certifi cations and CE marking available for most models
Applications
• System overpressure protection
• Storage tanks
• Freon® recovery systems
• Medical equipment
• Refrigeration & heating equipment
• Measuring & dispensing pumps
• Communications equipment
• Process control instruments
• R & D pilot plants
• Vacuum pump safety