Pneumatic Diaphragm Valves DIASTAR

1/2" to 2" sizes PVC, CPVC, polypropylene, PVDF - EPDM or PTFE diaphragms

FC -fail closed - FO - fail open - DA - double acting

Socket unions connections or ANSI Flanged 

The newly designed  DIASTAR pneumatic Diaphragm Valves from George Fischer  represent a revolution in terms of design, safety, efficiency and simplicity.

Metal through bolts that may be subject to corrosion have been replaced by a central union nut. This connection is non-corrosive, temperature stable and high pressure rating up to 240PSI.

Larger passageways for liquid have doubled the Cv values vs. the classic design of diaphragm valves.  This frictional energy saving allows for higher flows in smaller size piping.  As you would expect, the flow characteristic is very linear and still ideally suited for control applications.

The air connections can be rotated in relation to the flow connections and pre-tensioned spring-kits facilitate installation and maintenance enormously. The accessory interface allows simple integration into facility automation.

Recommended for these industries

• Chemical Process Industry
• Metal Finishing and plating
• Life Science
• Microelectronics
• Water Treatment
• Food and Beverage
• Applications with high viscosity and solid content

Advantages:

• corrosion resistant and high pressure rating
• high efficiency due to doubled Cv values and linear valve characteristics
• linear control characteristic
• PVC CPVC, polypro and PVDF materials to allow  for best chemical resistance
• safe and easy maintenance
• easy integration of a wide range of accessories
• suitable for slurries and abrasive media

Options:

• self adjusting electrical feedback
• stroke limiter / manual override
• pilot valves
• AS-Interface
• positioner
• valve cluster with bus-communication
• Standard 150PSI or High pressure springs for 250 PSI service

Products:

• DIASTAR 16: This type series has the highest closing forces, it is implemented wherever high line pressure, up to 240PSI, needs to be controlled. The DIASTAR Sixteen with integrated accessory interface is also your valve of choice if you place a great deal of importance on easy system integration.
• DIASTAR 10 is ideal for all standard applications up to 150PSI that require integrating accessories. This version has an interface for accessories that allows you to link the actuator effortlessly to your system control. It also features an outstanding price-performance ratio and compact dimensions.

Standards:

• ISO, BS, ANSI, ASTM, JIS

Download data sheet

See Type 514 manual diaphragm valve for additional details

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