Select branch and language

Select language

Internal sales

For all sales-related matters:

Tel: +34 93 622 70 39

Send an enquiry

Service helpline

For all after-sales matters:

Tel: +49 7940 123 450

Contact the helpline

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 features

Parameters
Value
Media temperature
-20 to 80 °C-4 to 176 °F
Ambient temperature
-10 to 50 °C14 to 122 °F
Operating pressure
0 to 6 bar0 to 90 psi
Nominal sizes
DN 15 to 501/2'' (DN 15) to 2'' (DN 50)
Body configurations
2/2-way body
Connection standards
ANSI
ASTM
BS
DIN
EN
ISO
JIS
Connection types
Flange
Spigot
Union end
Flange
Spigot
Union end
Body materials
ABS
PP inliner / outliner
PVC-U
PVDF inliner
Diaphragm materials
EPDM
FKM
NBR
Conformities
ACS
EAC
FDA
NSF
System 1+

Downloads

11 Results
  • ti_angle_de_rotation_inclinaison_plastique_fr

    pdf, 680 KB, FR

  • Techn_Gl_Kunststoff_fr_it

    pdf, 192 KB, FR/IT

  • Product certificate RoHS - GEMÜ product collection

    pdf, 450 KB, DE/EN

  • Data sheet GEMÜ R647

    pdf, 1.73 MB, EN

  • ti_drehwinkel_neigungswinkel_kunststoff_de

    pdf, 680 KB, DE

  • Konformitätserklärung OFI water - GEMÜ diaphragm valve collection

    pdf, 886 KB, DE

  • Betriebsanleitung GEMÜ R647

    pdf, 4.87 MB, DE

  • ti_rotation_angle_tilt_angle_plastic_gb

    pdf, 680 KB, EN

  • Fiche technique GEMÜ R647

    pdf, 1.71 MB, FR

  • Techn_Gl_Kunststoff_de_gb

    pdf, 127 KB, DE/EN

  • Datenblatt GEMÜ R647

    pdf, 1.70 MB, DE

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

    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.