StoneL Quartz 4-Switch Maxx-Guard Valve Monitor QN4GC02NRA QN4GC03NRA QN4GD05NRA QN4GD06NRA

StoneL QN4GC02NRA is a Quartz 4-Switch Maxx-Guard Valve Monitor for industrial valve position feedback. This product listing covers four ordering references: QN4GC02NRA, QN4GC03NRA, QN4GD05NRA and QN4GD06NRA. The QN4G configuration incorporates four SPDT Maxx-Guard low-current switches, providing multiple discrete switching points for compatible automated valve assemblies.

The StoneL Quartz platform is designed for industrial valve monitoring applications where electrical position feedback and local indication are important. Different enclosure and conduit configurations allow customers to select an appropriate ordering reference for their existing equipment or new project. However, the complete model number should always be verified before ordering.

StoneL QN4GC02NRA Quartz 4-Switch Maxx-Guard Valve Monitor

Automated valves are used throughout industrial processing facilities to control and isolate the movement of fluids. Their operating position is often communicated to a distributed control system, programmable logic controller or other compatible monitoring equipment. A valve monitor helps provide this information through discrete switching signals.

The QN4G configuration belongs to the StoneL Quartz proximity-switch product family. Unlike QN2G models, which contain two SPDT Maxx-Guard switches, QN4G models contain four. The additional switching elements provide more individual switch points, although their actual assignments depend on the installation and actuator arrangement.

Maxx-Guard G-type switches are designed for compatible low-current electrical applications. The manufacturer identifies these switches as hermetically sealed SPDT devices with rhodium contacts. Their electrical characteristics should be matched carefully to the control system input requirements.

For replacement projects, the full StoneL model number is essential. Two devices may share the same switching function while having different conduit entries or mechanical configurations. Therefore, customers should not assume that visually similar products are direct substitutes.

Available StoneL Quartz QN4G Models

This WooCommerce variable product includes four complete StoneL ordering references. Each model should be configured as an individual variation with its own SKU. The main differences identified in the ordering guide relate to enclosure and conduit arrangements.

Ordering Notice: C02 and C03 represent different NPT conduit configurations, while D05 and D06 represent different metric conduit configurations. Before ordering, verify the exact model against the original equipment nameplate and manufacturer documentation.

Technical Specifications

Technical Note: These are manufacturer-published family and switch characteristics. Confirm the complete device configuration, environmental ratings and approval requirements before installation. Electrical loads must remain within the applicable switch specifications.

Key Features and Benefits

Four Independent SPDT Switches

The QN4G configuration provides four SPDT Maxx-Guard switching elements. Compared with a two-switch monitor, this arrangement offers additional discrete switch points for compatible control and indication requirements. The actual switching positions and signal assignments depend on actuator setup.

Low-Current Switching Technology

Maxx-Guard G switches use hermetically sealed contacts intended for compatible low-current circuits. Their rhodium contact construction and manufacturer-specified electrical ratings should be considered when selecting equipment for PLC or DCS input applications.

Multiple Conduit Configurations

StoneL offers the QN4G family with NPT and metric conduit options. This is particularly useful for projects involving different regional installation practices. Nevertheless, the conduit arrangement must match the intended cable connection requirements.

Quartz Industrial Enclosure Platform

The Quartz family includes industrial valve monitoring solutions with enclosure and visual indication options. The platform is associated with demanding process automation environments. Specific environmental protection and hazardous-area approvals must be verified for the complete ordered device.

Industrial Applications

StoneL Quartz QN4G valve monitors may be used on compatible automated valve assemblies in a variety of industries. Common application environments include oil and gas, petrochemical processing, chemical plants, power generation, water treatment, pulp and paper, and industrial utilities.

These devices are relevant where multiple discrete valve position signals are required. Depending on the actuator and control system design, additional switching points may be useful for process indication, operating sequence monitoring or maintenance inspection.

However, selecting a four-switch model does not automatically make it suitable for every actuator. The mounting interface, mechanical travel, switch adjustment and electrical system requirements should be checked by the responsible engineering team.

StoneL QN4G Model Selection Guide

Step 1: Confirm the switch quantity. Determine whether the application requires four SPDT switching elements. If only two are required, a different Quartz function may be more appropriate.

Step 2: Verify the electrical requirements. Review the control system input characteristics and compare them with the published Maxx-Guard G switch ratings.

Step 3: Choose the correct conduit arrangement. Select QN4GC02NRA or QN4GC03NRA for the appropriate NPT configuration. Select QN4GD05NRA or QN4GD06NRA when the installation requires the corresponding M20 arrangement.

Step 4: Check the original equipment. For replacements, record the full StoneL model number and photograph the existing nameplate. Avoid substituting another configuration based only on product appearance.

Step 5: Review mounting and site conditions. Confirm actuator compatibility, mounting hardware, available clearance and applicable environmental or approval requirements.

Step 6: Request a commercial quotation. Provide the exact model, required quantity, delivery destination and purchasing schedule so that the supplier can review the inquiry.

Why Choose Wuhan Yuli Automation?

Wuhan Yuli Automation Technology Co., Ltd. supplies industrial automation components for customers worldwide. Our portfolio includes StoneL valve monitors, intelligent valve positioners, industrial controllers, communication modules, power supplies and other process automation products.

We focus on supplying new and original products with at least a one-year warranty under our standard sales commitment. Our team also assists with model identification, sourcing inquiries, commercial quotations and international order coordination.

Browse our industrial automation products and industrial automation brands for related equipment.

For official manufacturer information, visit the Valmet StoneL Quartz product page and review the official Quartz technical brochure.

Frequently Asked Questions

What is StoneL QN4GC02NRA?

StoneL QN4GC02NRA is a Quartz valve monitor configuration with four SPDT Maxx-Guard low-current switches and a C02 conduit arrangement.

What is the difference between QN4G and QN2G?

QN4G contains four SPDT Maxx-Guard low-current switches, while QN2G contains two. The correct quantity depends on the application’s monitoring requirements.

What is the difference between QN4GC02NRA and QN4GC03NRA?

Both use the same four-switch function, but they have different NPT conduit entry arrangements. The correct version should match the installation requirements.

Are QN4GD05NRA and QN4GD06NRA interchangeable?

Not automatically. They use different numbers of M20 conduit entries. The full mechanical and electrical requirements must be verified before substitution.

Can QN4GC02NRA be used with a PLC?

It may be suitable for compatible PLC input circuits when the switch ratings, wiring arrangement and installation requirements are correctly matched. Engineering verification is required.

How can I request a quotation?

Send Wuhan Yuli Automation the complete model number, required quantity and shipping destination. A photograph of the existing product nameplate can help confirm replacement requirements.