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% | |
