The KOSO EPA804-C is a heavy-duty industrial electro-pneumatic valve positioner engineered for precise throttling and on/off control of pneumatic control valves in demanding process environments. It converts a 4-20 mA DC input signal into a proportional pneumatic output pressure, ensuring accurate valve stem positioning and reliable response under varying process loads.
KOSO EPA804-C Technical Specifications
| Input Signal | 4-20 mA DC (2-wire) |
| Output Pressure Range | 0.2 to 1.0 bar (3 to 15 psi) or 0.4 to 2.0 bar (6 to 30 psi) |
| Supply Pressure | 1.4 to 7.0 bar (20 to 100 psi) |
| Air Consumption | Low bleed design, typically < 0.6 Nl/min at steady state |
| Flow Capacity | Up to 10 Nl/min (supply), 12 Nl/min (exhaust) |
| Operating Temperature | -20°C to +80°C (-4°F to +176°F) |
| Enclosure | IP66 / NEMA 4X |
| Housing Material | Die-cast aluminum, epoxy-coated |
| Mounting | NAMUR / IEC 60534-6-1, linear or rotary actuators |
| Port Connections | 1/4″ NPT female |
| Weight | Approx. 2.5 kg (5.5 lbs) |
Key Engineering Features
- Force-balanced electro-pneumatic torque motor for stable, vibration-resistant operation
- Zero and span adjustments accessible without disassembly
- Low air consumption reduces operating costs
- Corrosion-resistant epoxy coating for harsh plant atmospheres
- Split-range capability for sequential valve control
- Compatible with single-acting and double-acting pneumatic actuators
Industrial Applications
- Chemical and petrochemical process control loops
- Oil and gas flow regulation
- Power plant steam and water management
- Pulp and paper stock consistency control
- Water and wastewater treatment valve positioning
For technical inquiries, dimensional drawings, or replacement support for KOSO EPA804-C, contact the Pro-Hydraulic engineering team.
PRODUCT IMAGES
KOSO EPA804-C Electro-Pneumatic Valve Positioner
⚡ 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.
Shop the KOSO EPA804-C Electro-Pneumatic Valve Positioner. This precision-engineered industrial component delivers reliable performance and tight fluid control for heavy-duty systems.