Sapag - Industrial Valves


Industrial Valves

 

JMA Wafer Butterfly Valves

 

 


General description

 

Type : Rubber lined butterfly valve with elastomer seat

End connection: Wafer

  • Same design as JMC series

  • Face to face standard: ISO 5752 - 20

  • Size: DN 50 mm (2”) to 300 mm (12”)

  • Working pressure: PN 10, 16

  • Working temperature: -15°C to +130 °C

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Features

 

Design features: Body

  • Top flange in acc. With ISO 5211
    to adapt any type of actuators

  • Locating holes
    for perfect alignment (semi-Lugged) between flanges.

  • Body materials:
    Ductile Iron (Standard material)

Design features: Disc

  • Spherical shape for perfect Disc/seat tightness and continuous contact.

  • Made in One piece without attachments or pins.

  • Disc materials:
    Ductile Iron (Epoxy coated)
    Al.Br, SS 316 also available

Design features: Shaft

  • Disc/shaft connection via Spline shaft

  • “Dry shaft” design: Shaft completely isolated from the media

  • Shaft materials:
    Stainless steel AISI 420 (standard)

  • Square shaft for standard JMA. Round with cross pin for UL/FL approved version

  • Chevron seal to prevent external contaminations

  • Multiple bearings made in PTFE on metallic support (DU type) for maximum radial support and shaft rigidity.

  • Protecting plug

Design features: Anchored Seat

  • Extra seat support (anchored in the body)

    • Ensures accurate positioning of the seat and better tightness

  • Seat bossings

    • Increase tightness between disc/seat and Seat/shaft

  • Lips and groove construction

    • For better tightness between flanges

  • Materials:

    • EPDM, Nitrile, Viton, Hypalon, Therban...



Design features: Anchored Seat

  • Extra seat support (anchored in the body)

    • Avoids excessive stresses whilst opening & closing

    • Provides better angular tightness (+/- 5°)

    • Provides bubble tight shut-off up to 25 bars (differential pressure)

  • Seat bossings

    • Spherical shape in contact with the disc for better and continuous tightness

    • Shaft fully isolated from the media

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Actuators

 

Manual operators:

  • Lockable lever made in Ductile Iron

  • Notched lever made in Aluminium

  • Worm gears for DN50 to DN300 with adjustable mechanical stops

  • Worm gear MF type with or
    without Monitor switches

  • UL/FM/VDS/APSAD approved for fire protection applications

Actuators:

  • Pneumatic actuators:

    • Single or double acting type.

    • For ON/OFF or modulating service

  • Electric actuators:

    • For ON/OFF or modulating service

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Approvals

 

Approvals and certificates:

  • UL 175 psi (USA)

  • FM 175 psi (USA)

  • VDS (GER)

  • APSAD (FR)

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Applications

 

  • FIRE PROTECTION SYSTEMS

  • HVAC (motorized butterfly valves)

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