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• Die-cast aluminumcase

• Oil-impregnated, self-lubricating bushings

• Molded, convoluted diaphragms for smooth operation and long life

• Rigid, reinforced flag rods for positive alignment and sustained accuracy

• Graphite-filled phenolic valves to minimize wear

• Long-life, low friction, grommet seals

• Security seals that indicate tampering


•Temperature compensation available from -30°F to 140°F (-34°C to 60°C)

• 1400 SCFH (39.6 m3 /h) (0.60 specific gravity gas) at 1/2-inch W.C. differential

• AMR/AMI compatibility

• Meets ANSI B109.2 specifications