D/SVL

D/SVL

Pressure Relief Valve

Функция и описание

The D/SVL type PROTEGO® valve is a high performance pressure relief valve. It is primarily used as a safety device for relieving pressure in tanks, containers, and process engineering equipment. The valve offers reliable protection against overpressure and prevents the unacceptable loss of product vapors 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 the highly developed manufacturing technology, the tank pressure is maintained up to the 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 pallet from sticking when sticky products are used, and they enable the use of corrosive media. After the excess pressure is discharged, 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.

Особые признаки и преимущества

  • “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
  • extremely high fl ow capacity
  • the valve pallet is guided within the housing to protect against harsh weather conditions
  • can be used in areas subject to an explosion hazard

Таблица параметров

To select the nominal size (DN), use the flow capacity chart on the following page

DN50 / 2" 80 / 3"100 / 4"150 / 6"200 / 8" 250 / 10"300 / 12
a336 / 13.23412 / 16.22444 / 17.48564 / 22.20664 / 26.20687 / 27.05687 / 27.05
b200 / 7.87295 / 11.61295 / 11.61465 / 18.31550 / 21.65650 / 25.59650 / 25.59
DN50 / 2" 80 / 3"100 / 4"150 / 6"200 / 8" 250 / 10"300 / 12
a336 / 13.23412 / 16.22444 / 17.48564 / 22.20664 / 26.20687 / 27.05687 / 27.05
b200 / 7.87295 / 11.61295 / 11.61465 / 18.31550 / 21.65650 / 25.59650 / 25.59

размер в мм

D/SVL

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Выбор материала корпуса

Design AB
HousingSteelStainless Steel
Valve seatStainless SteelStainless Steel
SealingPTFEPTFE
Weather hoodStainless SteelStainless Steel
Design AB
HousingSteelStainless Steel
Valve seatStainless SteelStainless Steel
SealingPTFEPTFE
Weather hoodStainless SteelStainless Steel

Special materials upon request

Material selection for pressure valve pallet

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
>+35 up to +60
>+14 up to +24
>+14 up to +35
>+5.6 up to +14
>+35 up to +60
>+14 up to +24
Valve palletAluminiumStainless SteelStainless SteelStainless SteelStainless SteelStainless Steel
SealingFEPFEPMetal to MetalMetal to MetalPTFEPTFE
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
>+35 up to +60
>+14 up to +24
>+14 up to +35
>+5.6 up to +14
>+35 up to +60
>+14 up to +24
Valve palletAluminiumStainless SteelStainless SteelStainless SteelStainless SteelStainless Steel
SealingFEPFEPMetal to MetalMetal to MetalPTFEPTFE

Special materials and devices with higher set pressure or vacuum are available upon request

D/SVL

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Вид фланцевого соединения

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

Модели и спецификация

The valve pallet is weight-loaded. Higher pressures can be achieved upon request with a special spring-loaded design.

Pressure valve in basic design

D/SVL -

Pressure valve in basic design

D/SVL -

Additional special devices available upon request.

Settings

Pressure:

+2.0 mbar

+60 mbar

+2.0 inch W.C.

+24 inch W.C.

Higher pressure settings upon request.

D/SVL

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Диаграммы пропускной способности

Диаграммы пропускной способности были определены с помощью калибрированной и сертифицированной объединением технического надзора (TÜV) проточной измерительной установки. Пропускная способность V. в м³/час определена воздухом при нормальных атмосферных условиях в соответствии с ISO 6358 (20°C, 1 бар). Преобразование для различных плотностей и температур см. главу 1: Технические основы

D/SVL

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D/SVL

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