Prevost Conex Tube/Male Thread Flow Regulator (One Way)

Description

Prevost Conex Tube/Male Thread Flow Regulator (One Way)

In-Line to Port Precision: Inlet Tube / Outlet Male

The Prevost Conex Tube/Male Thread Flow Regulator is a high-precision unidirectional valve designed to control the speed of pneumatic actuators and the timing of air circuits. This specific configuration features a Push-in Tube Inlet and a Male Threaded Outlet, making it the ideal choice for mounting directly into a cylinder or manifold port while receiving air from a supply line.¹

By regulating the airflow in one direction while allowing free flow in the reverse, this regulator provides the exact “metering” required for smooth, professional pneumatic movement.

Key Features

• Unidirectional (One-Way) Logic: This regulator is designed to restrict air flowing from the Tube (Inlet) toward the Thread (Outlet). In the reverse direction (from the thread back to the tube), air passes through an internal bypass check valve at full flow.
• “Meter-In” Speed Control: When installed directly into a cylinder port, this configuration acts as a Meter-In controller. It regulates the speed of the actuator by limiting the volume of air entering the chamber—essential for single-acting cylinders and specialized timing applications.²
• 360° Swivel Elbow Design: The $90^\circ$ elbow body rotates fully around the nickel-plated brass base. This allows you to position the tubing inlet in any direction, ensuring clean cable management and easy access to the adjustment needle.
• Instantaneous “Grip” Technology: The inlet port features Prevost’s signature stainless steel gripping ring. Simply push the technical tubing (PU, PA, or PE) into the fitting for an immediate, vibration-proof, and airtight seal.
• Precision Adjustment: Available with either an ergonomic manual knob for “on-the-fly” tuning or a recessed slotted screw for low-profile, tamper-resistant settings.³

Technical Specifications

Feature	Specification
Flow Direction	Inlet (Tube) > Outlet (Male Thread)
Regulation Type	One-Way (Meter-In)
Technology	Needle Valve with Bypass Check Valve
Max Operating Pressure	145 PSI (10 bar)
Body Material	High-Impact Technical Polymer
Base Material	Nickel-Plated Brass
Temperature Range	32°F to 140°F (0°C to +60°C)

The Advantage of Meter-In Regulation

While “Meter-Out” is the industry standard for general cylinder speed, the Inlet Tube / Outlet Male regulator is critical for specific scenarios:

1. Single-Acting Cylinders: Effectively controls the extension speed of spring-return actuators where only one air port is utilized.
2. Small-Bore Cylinders: Prevents “stiction” or jerky movements in very small actuators by providing a steady, metered supply of air.
3. Air Logic Circuits: Used to create precise time delays by controlling how quickly a pilot signal reaches a control valve.

Ideal Applications

• Automated Clamping: Slowing the descent of a pneumatic clamp to avoid marring delicate workpieces.
• Packaging Machinery: Coordinating the timing of light-duty pushers and sorters.
• Electronic Assembly: Providing smooth, low-force movement for miniature “pick-and-place” components.
• Safety Gates: Controlling the opening or closing cycle of lightweight pneumatic guards.

Installation Tip

Verify the flow direction by checking the etched arrow on the polymer body. The arrow points toward the male thread, indicating the direction of regulated flow. To ensure a 100% seal at the inlet, use a dedicated tube cutter to make a square, burr-free cut on your tubing before insertion.