V/SV

V/SV

Vacuum Relief Valve

Função e descrição

The V/SV type PROTEGO® valve is a highly developed 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. The valve offers reliable protection against vacuum, and prevents inbreathing of air close to the set pressure.

The device will start to open as soon as the set pressure is reached and only requires 10% overpressure to full lift. Continuous investments into research and development have allowed PROTEGO® to develop a low pressure valve which has the same opening characteristic as a high pressure safety relief valve. This “full lift type” technology allows the valve to be set just 10% below the maximum allowable working pressure of the tank and still safely vent the required mass flow.

Due to our highly developed manufacturing technology the tank pressure is maintained up to set pressure, with a tightness that is far superior to the conventional standard. This feature is achieved by valve seats made of high quality stainless steel and with precisely lapped valve pallets (1) or with an air cushion seal (2) in conjunction with high quality FEP diaphragm. The valve pallets are also available with a PTFE seal to prevent the valve pallets from sticking when sticky products are used, and they enable the use of corrosive media. After the vacuum is relieved, the valve reseats and provides a tight seal again.

The optimized fluid dynamic design of the valve body and valve pallet is a result of many years of research work, which allow a stable operation of the valve pallet and optimized performance resulting in reduction of product losses.

Características especiais e vantagens

  • “full lift type” technology valve utilizes only 10% overpressure to reach full lift
  • extreme tightness and hence least possible product losses and reduced environmental pollution
  • the set pressure is close to the opening pressure which results in best possible pressure management of the system
  • very high 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

Tabela de dimensões

Para escolher o diâmetro nominal (DN), veja o diagrama de vazão da página seguinte

DN40 / 1½"50 / 2"80 / 3"100 / 4"150 / 6"200 / 8"250 / 10"300 / 12"
a249* / 9.8*249312358443520588588
b325* / 12.79*337400514713808925925
DN40 / 1½"50 / 2"80 / 3"100 / 4"150 / 6"200 / 8"250 / 10"300 / 12"
a249* / 9.8*249312358443520588588
b325* / 12.79*337400514713808925925

Dimensões em mm Dimensões para a válvula de vácuo com camisa de aquecimento sob solicitação

V/SV
Detail X
Detail X

Seleção do material do corpo

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

Os corpos também podem ser fornecidos com revestimento de ECTFEMateriais especiais sob solicitação

Seleção do material do disco da válvula de vácuo

Design ABCDEF
Pressure range [mbar]

[inch W.C.]
-2,0 up to -3,5

-0.8 up to -1.4
<-3,5 up to -14

<-1.4 up to -5.6
<-14 up to -35

<-5.6 up to -14
<-14 up to -35

<-5.6up to -14
<-35 up to -60

<-14 up to -24
<-35 up to -60

<-14 up to -24
Valve palletAluminiumStainless SteelStainless SteelStainless SteelStainless SteelStainless Steel
SealingFEPFEPMetal to MetalPTFEMetal to MetalPTFE
Design ABCDEF
Pressure range [mbar]

[inch W.C.]
-2,0 up to -3,5

-0.8 up to -1.4
<-3,5 up to -14

<-1.4 up to -5.6
<-14 up to -35

<-5.6 up to -14
<-14 up to -35

<-5.6up to -14
<-35 up to -60

<-14 up to -24
<-35 up to -60

<-14 up to -24
Valve palletAluminiumStainless SteelStainless SteelStainless SteelStainless SteelStainless Steel
SealingFEPFEPMetal to MetalPTFEMetal to MetalPTFE

Special material as well as higher vacuum upon request

V/SV
Detail X
Detail X

Tipo de conexão flangeada

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

Outras conexões sob solicitação

Versão e especificação

There are two different designs:
Vacuum valve in basic design

V/SV - –

Vacuum valve with heating jacket

V/SV - H

Vacuum valve in basic design

V/SV - –

Vacuum valve with heating jacket

V/SV - H

Additional special devices available upon request

Ajustes de pressão

Vácuo:

-2.0 mbar -60 mbar
-0.8 inch W.C. -24 inch W.C.
Ajustes de vácuo mais altos sob solicitação.
V/SV
Detail X
Detail X

Diagrama de vazão

Este diagrama de vazão foi determinado em uma bancada de medição de vazão calibrada e certificada pela TÜV. A vazão V em m³/h se refere ao estado técnico padrão de ar, conforme ISO 6358 (20°C, 1bar). Para conversão em outras densidades e temperaturas, veja o cap. 1: Bases técnicas.

V/SV
Detail X
Detail X
V/SV
Detail X
Detail X