Series 5100 : Pop Action Type
VCIRCO POSVs Series 5100 with quick opening
are used for applications where the certified discharge capacity needs to be reached quickly
are used for gas applications only
have an adjustable blowdown of 3 – 7% of set pressure
pressure conforming to ASME VIII which can be adjusted beyond API standard up to 15%
Series 5200 & 5400: Modulating Action Type
are used to minimize medium loss
are used if medium must not discharge to atmosphere
open in proportion to the overpressure to ensure that only as much mass flow is discharged from the safety valve as is necessary to prevent further pressure increase
are used for both liquid and gas applications
Different options and accessories are available for this series acc. to customer's request.
Backflow preventer
Manual blowdown
Field test connection
Exhaust pilot vent to the body outlet
Pilot supply filter
Compliant with NACE MR-0175 and MR-0103 for sour applications
High pressure design for orifices Q, R and T