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Diaphragm valve / pneumatically-operated / sampling / regulating
AV-8 series Adamant Valves


  • Type:


  • Operation:


  • Function:

    sampling, regulating

  • Body:

    stainless steel

  • Applications:

    for tanks, sanitary

  • Other characteristics:


  • Temperature:

    121 °C (249.8 °F), 130 °C (266 °F)

  • Pressure:

    6 bar (87.02 psi)

  • DN:

    Min.: 1 in

    Max.: 2 in


AV-8 series constant pressure valve can ensure a stable pressure at both outlet and inlet. It is widely used in separators, heat exchangers, tank systems and other equipments. It also can be used as a relief valve.

Working Principle
Constant pressure valve is remotely operated by compressed air. The operation does not need any sensors; it only requires an air pressure regulator and a pressure gauge on pipeline for monitoring. A unique plunger design can make a rapid response to any pressure changes during the medium flow and changes stem position relatively to maintain the pre-set pressure. When the pressure increases, the valve opens; when the pressure decrease, the valve closes.

Design Standard

- AV-8 series constant pressure valve complies with DIN, 3A and ISO standards.
- The valve includes a valve body with seat, valve bonnet, a stem with a diaphragm and a clamp.
- Constant pressure regulating valve's inlet is 90° angle to the valve bottom, so as to minimize residue and facilitate cleaning. The plunger design allows less liquid flow and higher CIP flow.


Other Adamant Valves products

Sanitary Butterfly Valves