V/SV-XXL

V/SV-XXL

Vacuum Relief Valve

Function and Description

The V/SV-XXL type PROTEGO® valve is a highly developed optimized vacuum relief valve with excellent flow performance. It is primarily used as a safety device for relieving vacuum in tanks, containers and process engineering equipment. When the set vacuum is reached, the valve starts to open and reaches full lift within a 100% vacuum increase. Up to the set vacuum, the tank vacuum is maintained with a seal that is far superior to the conventional standard due to the highly developed manufacturing technology. This feature is achieved by valve seats made of high quality stainless steel with precisely lapped valve pallets and a reinforced housing design. After the vacuum is relieved, the valve reseats and again provides a tight seal. The optimized fluid dynamic design of the valve body and valve pallet is a result of intensive research and development activities, which allow a stable operation of the valve pallet and optimized performance resulting in reduction of product losses.

Features and Advantages

  • excellent tightness and hence least possible product losses and reduced environmental pollution
  • very high optimized flow capacity
  • the valve pallet is guided within the housing to protect against harsh weather conditions
  • can be used in areas subject to explosion hazards
  • self draining
  • maintenance friendly design
  • best technology for API-tanks
  • designed for use on cryogenic tanks

Dimensions

DN 300 / 12"
a 946 / 37.24
b 649 / 25.55
DN 300 / 12"
a 946 / 37.24
b 649 / 25.55

Dimensions in mm / inches Dimensions of pressure and vacuum relief valves with heating jacket upon request

V/SV-XXL

Material selection for housing

Design ABC
Housing Aluminium Steel Stainless Steel
Heating jacket (V/SV-XXL-H-...) Steel Stainless Steel
Valve seat Stainless Steel Stainless Steel Stainless Steel
Sealing PTFE PTFE PTFE
CoverAluminiumSteel Stainless Steel
Design ABC
Housing Aluminium Steel Stainless Steel
Heating jacket (V/SV-XXL-H-...) Steel Stainless Steel
Valve seat Stainless Steel Stainless Steel Stainless Steel
Sealing PTFE PTFE PTFE
CoverAluminiumSteel Stainless Steel

Option: Housing ECTFE-coatedSpecial materials upon request

Material selection for vacuum valve pallet

Design AB
Pressure range [mbar]

[inch W.C.]
-2.0 up to -9.0

-0.8 up to -3.6
<-9.0 up to -16

<-3.6 up to -6.4
Valve pallet Aluminium Stainless Steel
Sealing Metal to Metal Metal to Metal
Design AB
Pressure range [mbar]

[inch W.C.]
-2.0 up to -9.0

-0.8 up to -3.6
<-9.0 up to -16

<-3.6 up to -6.4
Valve pallet Aluminium Stainless Steel
Sealing Metal to Metal Metal to Metal

Special material as well as higher vacuum upon request

V/SV-XXL

Flange connection type

EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF
EN 1092-1; Form B1
ASME B16.5; 150 lbs RFSF

other types upon request

Design Types and Specifications

The valve pallets are weight-loaded. Higher vacuum can be achieved upon request with a special spring-loaded design. There are two different designs:
Pressure/vacuum valve in basic design

V/SV-XXL - –

Pressure/vacuum relief valve with heating jacket

V/SV-XXL - H

Pressure/vacuum valve in basic design

V/SV-XXL - –

Pressure/vacuum relief valve with heating jacket

V/SV-XXL - H

Additional special devices available upon request.

Settings

Vacuum:

-2.0 mbar -16 mbar
-0.8 inch W.C.
Higher vacuum settings upon request.
V/SV-XXL

Flow Capacity Chart

The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). Conversion to other densities and temperatures refer to Vol. 1: “Technical Fundamentals”.

V/SV-XXL
V/SV-XXL