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Hedland H771 Series Compressed Gases and Variable Area Flow Meter

Compressed Gases and Variable Area Flow Meter
H771 Series

• Direct reading
• Install in any position
• 360° rotatable guard/scale
• Easier-to-read linear scale
• No flow straighteners or special piping required
• Relatively insensitive to shock and vibration
• Temperature up to 240 °F
• Accuracy ±2% full scale
• Repeatability ±1%
• Special scales available
• Calibrated for 1.0 S.G.

MATERIALS
2024 - T351 Anodized aluminum body, piston and cone
C360 Brass body, piston and cone
T303 Stainless body, 2024 - T351 Anodized aluminum piston and cone
COMMON PARTS
Spider Plate T316 SS
Spring T302 SS
Fasteners T303 SS
Pressure Seals Viton®
Guard Polycarbonate
Retaining Ring T316 SS
Retaining Spring T316 SS
Indicator and Internal Magnet PPS / Ceramic
Guard Seal / Bumper Buna N
Scale Support 6063 - T6 Aluminum
End Caps Nylon ST
THREADS SAE J1926/1, NPTF ANSI B2.2, BSPP ISO1179
TEMPERATURE RANGE -20 to +240 °F (-29 to +116 °C) for higher temperatures, consult factory
PRESSURE RATING
Aluminum / Brass Operating 1,000 psi/69 bar max. (250 psi/17 bar max. for 3” series) with a 10:1 safety factor.
For High Cycle Applications please call
Stainless Steel Operating 1,500 psi/103 bar max. with a 10:1 safety factor.
For High Cycle Applications please call
PRESSURE DROP please call
ACCURACY ±2% of full scale
REPEATABILITY ±1%


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