DOROT S500 QR, is a, Diaphragm-actuated, Rigid Seal, Y-pattern, Quick Pressure Relief Valve, activated by the pressure of the pipeline. The valve opens instantly once pressure in the pipeline exceeds a safe preset level; relieving excess pressure in the system. When the pressure returns to normal, the valve closes slowly, at an adjustable pace.
IOM (PDF)
BIM Models
Size Unit
Size range
Pressure rating
Working temperature
End connection type
Threaded, Flanged, Grooved
Standard construction materials
Body and Cover
Ductile Iron
Internal Parts
Stainless Steel and Polymer
Seals + Diaphragm
EPDM
* Other optional materials available upon request
DOROT S500 QR
DOROT S500 QR
