FISHER™ 1078
Specifications:
Model: 1078 (Spring-Return), 1078D (Double-Acting)
Type: Piston Actuator, Scotch-Yoke design
Action: Spring-Return (1078) / Double-Acting (1078D)
Standard Travel: 90° and 180° rotation (other angles available)
Air Supply Pressure Range: 3.0 to 8.6 bar (40 to 125 psig) for spring-return models. Up to 10.3 bar (150 psig) for double-acting.
Ambient Temperature Range: -20° to 85°C (-4° to 185°F) with standard lubricant. Optional lubricants available for lower temperatures.
Mounting Position: Any position. Mounting base can be rotated in 5° increments.
Torque & Spring Output:
Torque Output: Available in multiple spring ranges to provide specific breakaway and running torque values. Output is a function of air supply pressure and spring size.
Example: A typical 1078 size 90 actuator can produce a spring-end torque of over 4,000 Nm (3,000 lb-ft).
Spring Ranges: Multiple spring packs are available to match the specific torque requirements of the valve.
Physical Data (Typical for a Size 90):
Body Material: Anodized Aluminum
Piston Rod & Yoke: Hardened Steel
Weight: Varies significantly with size and spring configuration. Can range from approx. 70 kg (150 lbs) to over 450 kg (1,000 lbs) for the largest units.
Accessories & Options:
Positioners: Fisher FIELDVUE™ DVC or other types can be mounted for modulating control.
Limit Switches: Proximity or mechanical switches to indicate valve position.
Solenoid Valves: Used for direct electrical control of the air supply, essential for ESD applications.
Air Filter Regulators: To clean and regulate the air supply.
Manual Override: Handwheel or lever for manual operation in case of air failure.
Weather & Explosion Proofing: NEMA 4, NEMA 7 (explosion-proof) enclosures for accessories.
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