Product Overview
The MASONEILAN 78-80S is a precision pneumatic air filter regulator engineered for conditioning instrument air and process gas supply in demanding industrial control loops. Combining filtration and pressure regulation in a single compact housing, the 78-80S removes airborne particulates, moisture, and oil aerosols while delivering a stable, repeatable downstream pressure to pneumatic valve actuators, positioners, transducers, and other air-operated instrumentation. As a general process and pneumatic valve accessory within the Masoneilan control valve ecosystem, it ensures that actuator response remains accurate and consistent regardless of upstream supply fluctuations, making it a critical reliability component in automated process control architectures.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Air Filter Regulator (Process & Pneumatic Valve Accessory) |
| Model Designation | 78-80S |
| Manufacturer | Masoneilan |
| Operating Pressure | Standard Industrial Grade (instrument air supply, up to rated bar) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (threaded process ports) |
| Function | Dual-stage filtration and pressure regulation of instrument air |
| Regulation Principle | Spring-loaded diaphragm with adjustable setpoint |
| Filtration Media | Replaceable filter element for particulate and condensate removal |
Engineering Features & Advantages
- Precision Performance: The spring-loaded diaphragm regulation mechanism maintains a stable downstream setpoint, compensating for upstream supply pressure variations to protect sensitive pneumatic actuators and positioners.
- Integrated Filtration: A replaceable filter element captures particulates, moisture, and oil carryover, safeguarding downstream valve instrumentation from contamination-induced drift or failure.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust housing and corrosion-resistant internal components suited to plant environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM Masoneilan standards, enabling drop-in service without modification to existing air supply piping.
- Adjustable Setpoint: Field-adjustable pressure setting allows commissioning and tuning to match specific actuator requirements across a range of control valve applications.
Typical Industrial Applications
The MASONEILAN 78-80S is deployed wherever clean, pressure-stable instrument air is essential to process control integrity. Typical installations include pneumatic control valve actuator supply on refinery and petrochemical process units, positioner and transducer air conditioning in power generation plants, instrument air regulation on natural gas and pipeline control skids, and general process automation loops in chemical, pharmaceutical, and water treatment facilities where reliable valve actuation directly affects product quality and plant safety.
PRODUCT IMAGES
MASONEILAN 78-80S Pneumatic Air Filter Regulator
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
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