SFV25T218-220bar safety valve manufactured by Danfoss

SFV25T218-220bar safety valve manufactured by Danfoss Product introduction

SFV 20 - 25 are standard, back pressure  dependent safety relief valves in angle-way  execution, specially designed for protection of  vessels and other components against excessive  pressure. The valve is designed to meet the strict  quality demands and safety requirements for  refrigeration installations, specified by the  international classification societies. The valve is recommended as an external and  internal safety relief valve in refrigeration plants.  The spring housing is closed tightly to avoid  refrigerant leakage. The inlet flow diameters of the valves are: ? 18 mm (3/4 in.) for SFV 20, and ? 23 mm (1 in.) for SFV 25 The valves can be delivered with set pressures  between 10 and 25 bar g (145 and 363 psi g). Standard pressure setting valves having "TüV  Pressure Setting Certificate" with each valve, are  also available.

Technical data

? Refrigerants Applicable for the refrigerants HCFC, HFC, R717  (Ammonia), R744 (CO2) within a  temperature range of –30°C/+100°C  (–22°F/+212°F). Flammable hydrocarbons are not  recommended.  For further information please contact your  local Danfoss Sales Company. ? Pressure Pressure setting range: 10 - 25 bar g  (145 - 363 psi g). For further information please  contact your local Danfoss Sales Company. The valves are designed for: Strength test: 43 bar g (624 psi g) Leakage safety: Same as set pressure Important: The SFV safety relief valve is  dependent on the back pressure (if the back  pressure is higher than the atmospheric  pressure, the opening pressure will be higher  than stated set pressure). Special circumstances such as vibrations  (which should be avoided) and oscillating  pressure may require an increased difference  between the operational pressure and the  closing pressure. ? Pressure setting The operating pressure of the plant should be  at least 15% below the set pressure. This allows  a perfect re-seating of the safety relief valve  after having been activated. ? Temperature range –30/+100°C (–22/+212°F)