Tec SVL28 safety valve water blaster pressure relief
(Replaces PA VS350 safety valve water blaster pressure relief)
Maximum pressure valve
3/8 inch BSP(F) inlet port
3/8 inch BSP(F) bypass port
25 lpm
90 degrees C max
280 bar (3625 psi) rated
390 bar (4060 psi) max
Important: pressure must be set by installer
Note: repair kit code 443.4079900012

Safety valve is a type of valve that automatically actuates when the pressure of inlet side of the valve increases to a predetermined pressure, to open the valve disc and discharge the fluid and when the pressure decreases to the prescribed value, to close the valve disc again. 
It is called a safety valve as a final safety device which control the pressure and discharges.