Product Overview
The COAX PCD-1 15 NC is a pneumatically actuated coaxial valve engineered by COAX (a brand of Müller Coax AG) for precise control of neutral and slightly aggressive gaseous and liquid media in industrial process systems. Unlike conventional angle-seat or globe valves, the PCD-1 series utilizes a coaxial (in-line) design in which the actuator, valve seat, and flow path share a single axis. This construction delivers a straight-through flow pattern with minimal pressure loss, high flow coefficients (Kv), and exceptional resistance to contamination and wear. The “15” designates the nominal line size (DN15 / 1/2″), while “NC” indicates a normally closed fail-safe configuration — the valve remains shut when the pilot air supply is interrupted, ensuring process safety. The PCD-1 is a direct-acting, pressure-balanced poppet valve suitable for demanding industrial service where leak-tight shutoff, fast response, and long cycle life are critical.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Coaxial Valve (Pneumatically Actuated Process Valve) |
| Model Designation | COAX PCD-1 15 NC |
| Nominal Size | DN15 (1/2″ nominal line connection) |
| Actuation Type | Pneumatic (external pilot air), spring-return |
| Function / Configuration | Normally Closed (NC) — closed on loss of pilot pressure |
| Operating Pressure | Standard industrial grade (up to rated bar per media and seal selection) |
| Pilot Pressure | Typical 3–10 bar instrument air (per manufacturer data) |
| Mounting & Connection | Standard ISO / threaded or flanged interface per model variant |
| Body & Seal Materials | Corrosion-resistant body with elastomeric seat seals (media-dependent) |
Engineering Features & Advantages
- Precision Performance: The coaxial, pressure-balanced poppet design provides a straight-through flow path with high Kv, low pressure drop, and fast, repeatable actuation — ideal for accurate on/off control of process media.
- Leak-Tight Shutoff: Soft-seated poppet geometry delivers bubble-tight sealing in the closed position, protecting downstream equipment and preventing media loss.
- Contamination Tolerance: The self-cleaning seat and in-line construction resist fouling from particles and viscous media, reducing maintenance downtime compared to conventional seat valves.
- Fail-Safe NC Operation: Spring-return normally closed action ensures the valve closes automatically on pilot air failure, supporting safe process shutdown.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original COAX OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
The PCD-1 is a direct-acting, pressure-balanced poppet valve suitable for demanding industrial service where leak-tight shutoff, fast response, and long cycle life are critical.
PRODUCT IMAGES
COAX PCD-1 15 NC Coaxial Valve
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Shop the genuine COAX PCD-1 15 NC direct-acting poppet valve. This Germany-made hydraulic component features a normally closed design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.