FS-67CFR-362 Fisher Filter Regulator(Instrument Air)

Product Description (Detailed Explanation)

The 67CFR-362 is a direct-operated regulator equipped with an internal filter and a relief valve. Its primary role is to take a high-pressure plant air supply and “step it down” to a lower, stable pressure required by sensitive instruments (like the Fisher DVC6200).

The module features a 5-micron cellulose filter that removes moisture, oil, and particulates from the air stream, which is critical for preventing clogs in small-orifice pneumatic components. The Internal Relief function (the “R” in CFR) allows the regulator to vent downstream overpressure, providing an extra layer of protection for the connected equipment.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Superior Filtration: The 5-micron element ensures that even microscopic debris cannot reach the sensitive nozzles and flappers of pneumatic positioners.

• Stable Output: Excellent regulation characteristics ensure that downstream pressure remains constant even when the upstream “header” pressure fluctuates.

• Compact and Lightweight: Small footprint allows it to be mounted directly on the actuator or positioner bracket without adding excessive weight.

• Corrosion Resistance: The epoxy powder-coated aluminum body is highly resistant to industrial atmospheres and salt spray.

• Simplified Maintenance: The filter drip well is easily accessible; by removing a single bolt, the bowl can be dropped to change the filter element without removing the regulator from the line.

Precautions (Important Notes)

• Installation Direction: Ensure the regulator is installed with the flow in the direction of the arrow cast on the body.

• Vent Obstruction: Do not block the vent hole on the spring case. If installed outdoors, ensure the vent points downward or is protected by a bug screen to prevent ice or debris buildup.

• Manual Draining: Periodically open the drain valve at the bottom of the filter bowl to remove accumulated moisture and oil.

• Oxygen Service: This standard model is NOT for use with pure oxygen. Special cleaning and materials are required for oxygen service to prevent combustion.

Product Applications (Typical Use Cases)

• Valve Positioners: Providing regulated supply air to digital valve controllers like the Fisher DVC6000/DVC6200.

• Pneumatic Actuators: Supplying constant pressure to spring-and-diaphragm or piston actuators for smooth valve modulation.

• I/P Transducers: Ensuring the air supply for current-to-pressure converters is clean and stable to maintain signal accuracy.

• Air Tools & Lab Equipment: Used in small-scale laboratory automation where precise, clean air is a requirement.

• Chemical & Refining: Standardized use across refineries for instrument air headers to protect the entire pneumatic control loop.