P/ELR

Válvula de alívio de pressão

Function and Description

Highly Developed Pressure Relief Valve

The P/ELR type PROTEGO® valve is a highly developed pressure relief valve Pressure-relief valve Valve designed to open and relieve excess pressure and to reclose and prevent the further flow of fluid after normal conditions have been restored. with excellent flow performance. It is primarily used as a device Device A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow. for relieving pressure Relieving pressure The relieving pressure is the vacuum or overpressure at which the valve reaches the lift required for the mass flow to be discharged. in tanks, containers, and process engineering equipment Equipment Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion. . The valve offers reliable protection against overpressure Overpressure Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. and prevents excessive 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 in and a commitment to 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. With this “full lift type” technology, valve can be set at just 10% below the maximum allowable working pressure of the tank and still safely vent the required mass flow.

Advanced Manufacturing Technology

Due to our highly developed manufacturing technology, the tank pressure Tank pressure Tank pressure is the pressure within a tank. 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 Seal A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements. (2) in conjunction with high quality FEP diaphragm Diaphragm A diaphragm is a thin layer of material, which has a large surface area. . The valve pallets are also available with a PTFE seal to prevent the valve pallets from sticking when sticky products are used and to enable the use of corrosive substance. After the overpressure is released, the valve re-seats and provides a tight seal.

Optimized Valve Design for Maximum Performance

The optimized fluid dynamic design of the valve body and valve pallet is a result of many years of research, resulting in a stable operation of the valve pallet, optimized performance, and reduced product losses.
Product Data and Features

Tabela de dimensões

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

DN 80 / 3" 80 / 3" 100 / 4" 100 / 4"
Set pressure≤ +80 mbar> +80 mbar≤ +80 mbar> +80 mbar
Set pressure≤ +32.1 inch W.C.> +32.1 inch W.C.≤ +32.1 inch W.C.> +32.1 inch W.C.
a353 / 13.90353 / 13.90353 / 13.90353 / 13.90
b350 / 13.78510 / 20.08350 / 13.78510 / 20.08

Dimensões em mm

Dimensões para a válvula de alívio de pressão com camisa de aquecimento sob solicitação

Seleção do material do corpo

Execução BC
Corpo Aço Aço inoxidável
Camisa de aquecimento (P / ELR-H-...) Aço Aço inoxidável
Sedes de válvulas Aço inoxidável Aço inoxidável
Tampa Aço Aço inoxidável
Tela de proteção Aço inoxidável Aço inoxidável

Materiais especiais sob solicitação

Seleção do material do disco da válvula de pressão

Execução ABCD
Faixa de pressão [mbar]
+3,5 até +5,0>+5,0 até +14>+14 até +210>+14 até +210
Obturador da válvula Alumínio Aço inoxidável Aço inoxidável Aço inoxidável
VedaçãoFEPFEP metálicaPTFE

Materiais especiais (alumínio revestido, titânio, Hastelloy) e ajustes de pressão mais altos sob solicitação

Tipo de conexão flangeada

EN 1092-1; Form B1
ASME B16.5 CL 150 R.F.

Outras conexões sob solicitação

Versão e especificação

O obturador da válvula é calibrado por peso. Com pressões de ajuste >80 mbar se utiliza um modelo extendido.
Estão disponíveis duas versões:
Válvula de alívio de pressão na versão básicaP/ELR - –
Válvula de alívio de pressão com camisa de aquecimentoP/ELR - H

Outros dispositivos especiais sob solicitação

Ajustes de pressão

Pressão:+3.5 mbar+210 mbar
+1.4 inch W.C.+84 inch W.C.

Ajustes de pressão mais altos sob solicitação.

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.

Detalhe X

Detalhe X

Applications