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Pneumatic 2/2-way diaphragm valve made of plastic

GEMÜ R647

ConfigureTechnical data sheet
Pneumatic diaphragm valve made of plastic with screw connections – ideal for the chemical industry, water treatment, and process control.

Simple diaphragm valve for actuation with air or water

Product information

The GEMÜ R647 2/2-way diaphragm valve is a straight through valve and is pneumatically operated. The valve doesn't have a closing spring and is only closed by applying compressed air. A diaphragm is the sealing element. The control medium applies direct pressure to the shut-off diaphragm pressing it against the shut-off weir in the valve body. The high-flow valve body provides compact dimensions at high flow rates.

Key features

  • Suitable e. g. for dyeing plant, paper industry and automatic feeding installations
  • Operator solution without closing spring, ideal when space is limited
  • Compact, lightweight construction and high performance
  • Simple diaphragm replacement
  • Good flow characteristics due to flow optimised valve body
Pneumatic diaphragm valve made of plastic with screw connections – ideal for the chemical industry, water treatment, and process control.

Technical details

Parameters
Value
Media temperature
-20 to 80 °C
Ambient temperature
-10 to 50 °C
Operating pressure
0 to 6 bar
Nominal sizes
DN 15 to 50
Body configurations
Straight through body
Connection standards
ANSI
ASTM
BS
DIN
EN
ISO
JIS
Connection types
Flange
Spigot
Union end
Body materials
ABS
PP inliner / outliner
PVC-U
PVDF inliner
Diaphragm materials
EPDM
FKM
NBR
Conformities
ACS
EAC
FDA
System 1+

Downloads

16 Results
  • Information technique GEMÜ R629, R639, R647, R649, R677, R690

    pdf (680 KB) -
    FR

  • Product certificate RoHS - GEMÜ product collection

    pdf (450 KB) -
    DE/EN

  • Data sheet GEMÜ R647

    pdf (2 MB) -
    EN

  • Technische Information GEMÜ R629, R639, R647, R649, R677, R690

    pdf (680 KB) -
    DE

  • Herstellererklaerung-Verordnung-EU-2024-590-de-2026-02-25

    pdf (84 KB) -
    DE

  • Konformitätserklärung OFI water - GEMÜ diaphragm valve collection

    pdf (886 KB) -
    DE

  • Betriebsanleitung GEMÜ R647

    pdf (5 MB) -
    DE

  • Technical information GEMÜ R629, R639, R647, R649, R677, R690

    pdf (680 KB) -
    EN

  • Product certificate NSF - GEMÜ product collection

    pdf (31 KB) -
    EN

  • Fiche technique GEMÜ R647

    pdf (2 MB) -
    FR

  • Operating instructions GEMÜ R647

    pdf (5 MB) -
    EN

  • Operating instructions GEMÜ R647

    pdf (7 MB) -
    DE/EN

Suitable services

  • Expert knowledge
    for your applications

    Training

    Deepen your expertise in valve technology and plant control. Our training courses provide practical content to help you design processes that are safe, efficient, and compliant with standards.

  • Ensure longevity
    and reliability

    Maintenance

    Regular maintenance ensures consistently stable processes. Our service teams ensure the availability of your systems and reliably extend the service life of your components.

  • Fast, efficient and
    precise in operation

    Repair

    When it comes to repairs, every minute counts. Our experts analyze, repair, and test reliably - using original spare parts, technical precision, and a focus on minimizing downtime.

  • Intelligent networking with GEMÜ CONEXO

    Digital support

    CONEXO makes maintenance digital: RFID technology and mobile apps enable the unique identification of your components and document maintenance processes transparently.