Diaphragm Valves - A class of their own

GF Piping Systems offers a wide range of diaphragm valves to cover the individual demands of our customers. No matter which pressure level, media temperature, dimension or actuator – we provide every kind of diaphragm valves to meet your expectations perfectly.

A solution for every situation

System overview

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Due to the modularity of the GF diaphragm valves, there are many different options to choose from. You can easily adjust your valve to your process conditions to get the most out of it.

Manual diaphragm valves

Manual 2-way diaphragm valve

Type 514, 515, 517

Manual 2-way diaphragm valve
  • Full plastic valve with optimized body design for improved flow profile
  • Lockable handwheel
  • Optical position indicator

Dimension range: d20/DN15 to d65/DN50

Pressure range: 0 to 16 bar

more information in our product catalog

3-way zero-static

Type 519

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  • Full plastic valve with optimized body design for improved flow profile
  • No dead space
  • Different outlet sizes available

Dimension range: d16/DN15 bis d110/DN50

Pressure range: 0 to 16 bar

more information in our product catalog

Big dimensions

Type 317

Diaphragm valves big dimensions
  • Proven screw design for big dimension
  • Optical position indicator

Dimension range: d75/DN65 to d160/DN150

Pressure range: 0 to 10 bar

more information in our product catalog

Pneumatic diaphragm valves

Type 604/605

Type 604/605
  • Full plastic valve with optimized body design for improved flow profile
  • Control mode: FC, FO, DA
  • Optical position indicator

Dimension: d20/DN15

Pressure range: 0 to 6 bar

more information in our product catalog

DIASTAR range

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  • Full plastic valve with optimized body design for improved flow profile
  • Control mode: FC, FO, DA
  • Wide selection of accessories

Dimension range: d20/DN15 to d65/DN50

Pressure range: 0 to 16 bar

more information in our product catalog

Big dimensions

Type 025

Diaphragm valve type 025 big dimensions
  • Proven screw design for big dimensions
  • Optical position indicator

Dimension range: d75/DN65 to d110/DN100

Pressure range: 0 to 10 bar

more information in our product catalog


Full plastic solution brings safety

Diaphragm valves 5-series

The full plastic design of GF diaphragm valves is a revolution and has a lot of advantages against the metal versions. The benefits of the design simplify your daily business and optimize your plant to make the best of your applications.

Optimized valve body, higher flow rate, straightforward installation and a central housing, the strength of this full plastic diaphragm valve is located in every detail. Have a closer look and find out many other features.

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No corrosion & maintenance
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Instead of four metal screws the full plastic diaphragm valve has only one central housing nut. The result is a homogeneous expansion during temperature changes. This results in zero maintenance and no leakages during temperature cycles.

100% more flow
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The development aimed to increase the flow and provide a valve for a stable process. Through the optimization of the patented valve body you benefit from:

  • Double flow rate
  • Linear flow characteristics
  • Minimized dead space for maximal hygiene
Absolute reliability
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All diaphragm valves are 100% leak-tested. Even by exceeding ISO 9393-2, after passing this test the QR code and quality check sticker is put on the valve.


Packs a punch for dosing applications

Diaphragm valve type 604/605

The full-plastic diaphragm valve 604 / 605 with integrated pneumatic actuator from GF Piping Systems ensures best flow performance in compact design. With this corrosion free valve we offer an additional product with the most economic price-performance ratio which is suitable for many applications.

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Easy installation and operation
  • The compact design enables installation in limited spaces
  • No re-torqueing needed due to full plastic design without metal parts and screws
  • Radially dismountable due to true unions
  • Maintenance free
  • Same installation length as all GF diaphragm valves and market standard valves
  • Integrated optical position feedback
  • QR code on valve leads to online available product documents
High safety
  • Uniform temperature expansion of plastic/plastic connection prevents leakages
  • High chemical resistance due to large material range
  • Best quality and reliability for high number of cycles
High Flexibility
  • Operation options: FC, FO, DA
  • Diaphragms available in PTFE, FPM, EPDM for neutral and aggressive media
  • Various connection options with true union or spigot version
  • Available Standards: Metric, ASTM, BS, JIS
  • Best quality and reliability for high number of cycles
  • Long lifetime
Best flow performance
  • Linear flow characteristic for simple valve control
  • Optimized flow geometry with soft transitions and radii doubles the flow rate
  • Suitable for media with low number of particles/solids

Perfect teamwork

The DIASTAR system

Same advantages and features, different technology. The perfect interaction of the pneumatic actuator and the high-tech body makes GF diaphragm valves a leading technology in this field.

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Different pressure levels require different handling. Therefore, GF Piping Systems off ers the optimal actuator configuration for your individual needs.

DIASTAR Six
For low pressure applications

DIASTAR Ten
All-rounder for standard applications

DIASTAR TenPlus
Use only when pressure is applied from both sides

DIASTAR Sixteen
For water applications with high pressure


Downloads

Product Catalog

Product Catalog: Diaphragm Valves
Diaphragm Valves

Chemical Resistance of your materials in use

Chemische Beständigkeit

Catch up on important information regarding the chemical resistance of different materials.

Consult our online-tool to check the chemical resistance

Georg Fischer Rohrleitungssysteme GmbH
Sandgasse 16
3130 Herzogenburg
Austria

austria dot ps #at# georgfischer dot com