The Parker FM-4 Series is a 3/4 inch PFA/PTFE Flowmeter that’s ideally suited for high purity applications where precise control and measurement of liquids is required. It utilizes a PTFE body, a high-purity PFA barrel, and precision-machined needle valve components. These features afford the flowmeter high cycle life, excellent leak integrity, and exceptional resistance to aggressive liquids.

Rather than a typical face-to-face seal, the FM-4 Series utilizes compression technology to seal the barrel to the body. This ensures reliable, leak-free operation and enables 360-degree port orientation for increased flexibility. The flowmeter’s unique PTFE float design allows for consistent read out and visibility in a wide range of chemicals.

The FM-4 Series is fitted with Parflare inlet and outlet connection types, which reduce assembly and installation time, while ensuring a leak-tight seal for performance in applications where cleanliness is critical.

Markets:
• Semiconductor
• Analytical Laboratory
• Pharmaceutical
• BioPharm
• Aerospace
• Industrial

Features and Benefits:
• PTFE and PFA wetted surfaces provide high flexural life and exceptional corrosion resistance
• Fully functional from 0 to 120 psig
• Standard features are an integral needle valve for flow control and panel nuts for mounting
• Compression barrel to body seal ensures zero leakage and allows 360-degree port orientation
• Flow range: 2 – 5 GPM depending on configuration
• Available with Parflare inlet/outlet connection fittings
• Ambient temperature range: 0°F to +212° F (-17°C to +100° C)
• Fluid temperature range: 0°F to +266° F (-17°C to +130° C)

Applications:
• Corrosive and/or specialty chemicals, acids, bases, and slurries
• Semiconductor Tools
• CMP/Slurry Systems
• Valve Manifold Boxes (VMBs)