How to Use PEX Go / No-Go Gauge

To use a PEX Go/No-Go Gauge, follow these steps:

Inspect the PEX pipe: Ensure the PEX pipe is clean, free from debris, and properly cut to the required length.
Identify the gauge size: Determine the appropriate gauge size for your PEX pipe. The gauge size corresponds to the nominal diameter of the pipe, such as 1/2″, 3/4″, or 1″.
Go gauge: Insert the Go gauge end into the PEX pipe. The Go gauge should fit smoothly and completely into the pipe without any resistance.
No-Go gauge: Insert the No-Go gauge end into the PEX pipe. The No-Go gauge should not fit into the pipe or should encounter resistance when attempting to insert.
Interpret the results: If the Go gauge fits properly and the No-Go gauge does not fit or encounters resistance, the PEX pipe meets the required specifications. However, if the Go gauge encounters resistance or the No-Go gauge fits, the pipe fails the inspection and should not be used.

Remember to follow the manufacturer’s instructions and guidelines for the specific PEX Go/No-Go Gauge you are using.

Overview of PEX Go/No-Go Gauge

The PEX Go/No-Go Gauge is a tool used to ensure the proper installation and alignment of PEX (cross-linked polyethylene) plumbing systems. It consists of two parts: the “Go” gauge and the “No-Go” gauge.

The “Go” gauge is used to check if the PEX fittings are correctly crimped or pressed. If the fitting passes through the designated hole on the “Go” gauge, it indicates a proper connection.
The “No-Go” gauge is used to check if the fittings are over or under crimped. If the fitting does not pass through the designated hole on the “No-Go” gauge, it indicates an incorrect connection.

These gauges are essential for ensuring the reliability and performance of PEX plumbing installations. By using the PEX Go/No-Go Gauge, professionals can quickly identify and rectify any faulty connections, minimizing the risk of leaks or system failures.

Understanding the Purpose of Go/No-Go Gauges

Go/No-Go gauges are precision tools used in manufacturing and quality control processes to verify the dimensional accuracy of a component or product. These gauges consist of two ends: the Go end and the No-Go end.

The purpose of Go/No-Go gauges is to determine if a part or feature meets the specified tolerances. When the part is correctly manufactured, the Go end should fit into the designated area, while the No-Go end should not fit.

Key reasons for using Go/No-Go gauges include:

Efficiency: These gauges provide a quick and reliable method to check multiple parts rapidly, ensuring that they meet required specifications.
Consistency: Go/No-Go gauges help maintain consistent quality by ensuring that each part conforms to the desired dimensions.
Cost-effectiveness: By identifying non-conforming parts early, these gauges prevent the use of faulty components, reducing waste and potential rework.
Reliability: Go/No-Go gauges provide a standardized and objective means of measurement, minimizing subjective judgments and human error.

In summary, Go/No-Go gauges play a crucial role in maintaining quality standards by swiftly determining whether a component meets the specified tolerances, ensuring consistent and accurate manufacturing processes.

The Importance of Using Proper Gauging Techniques

Using proper gauging techniques is essential for accurate measurements and reliable data in various industries. Incorrect gauging can lead to costly errors, production delays, and compromised product quality. Here’s why it is important:

Precision: Proper gauging techniques ensure precise measurements, allowing for tight tolerances and adherence to specifications.
Consistency: Consistent gauging techniques help maintain uniformity in measurements across multiple samples or batches, ensuring reliable data comparison.
Quality control: Accurate gauging is crucial for quality control, enabling the identification of defects, non-conformities, or deviations from standards.
Process optimization: Proper gauging techniques provide insights into process variations and help identify areas for improvement and optimization.
Regulatory compliance: Many industries have stringent regulatory requirements that mandate the use of proper gauging techniques to ensure compliance.
Customer satisfaction: Reliable gauging techniques contribute to consistent product quality, meeting customer expectations, and enhancing satisfaction.

In summary, using proper gauging techniques is vital for precision, consistency, quality control, process optimization, regulatory compliance, and customer satisfaction. It is a fundamental aspect of ensuring accuracy and reliability in measurements and should be prioritized in various industrial applications.

Different Types of PEX Go/No-Go Gauges

PEX (cross-linked polyethylene) go/no-go gauges are used to ensure the proper sizing and integrity of PEX pipes and fittings. These gauges are essential tools for plumbers and professionals working with PEX systems. There are several types of PEX go/no-go gauges available, each designed for specific applications:

PEX Tubing Gauges: These gauges are used to verify the correct diameter and ovality of PEX tubing. They ensure that the tubing meets the required specifications and can be properly connected to fittings.
PEX Fitting Gauges: These gauges are used to check the dimensions and shape of PEX fittings, such as crimp or expansion fittings. They help ensure that the fittings are within the acceptable tolerance range for proper installation.
PEX Insert Gauges: These gauges are specifically designed to verify the correct insertion depth of PEX fittings into the PEX tubing. They ensure that the fittings are fully inserted for a secure and leak-free connection.

Using the appropriate PEX go/no-go gauges is crucial to ensure the reliability and performance of PEX plumbing systems. Properly sized and fitted PEX pipes and fittings are essential for maintaining the integrity and functionality of the overall plumbing installation.

Selecting the Right Gauge for Your Application

When choosing the appropriate gauge for your application, several factors need to be considered:

Accuracy: Determine the level of precision required for your measurements. Higher accuracy gauges may be necessary for critical applications.
Measurement range: Consider the range of values you need to measure. Ensure that the selected gauge can handle the expected range without compromising accuracy.
Environmental conditions: Evaluate the operating environment, including temperature, pressure, and any potential corrosive substances. Select a gauge that can withstand these conditions.
Compatibility: Ensure compatibility with existing systems or equipment. Consider the required connections and fittings.
Cost: Evaluate the budget constraints and balance them with the required accuracy and durability.
Application type: Different gauges are suitable for different applications, such as pressure gauges for fluid systems or strain gauges for structural analysis.

By carefully considering these factors, you can choose the ideal gauge that meets your application requirements, providing accurate and reliable measurements.

Familiarizing Yourself with the Gauge Components

Familiarizing Yourself with the Gauge Components

When familiarizing yourself with gauge components, it is essential to understand their functionality and characteristics. Here are some key points to consider:

Dial or Display: Gauges typically feature a dial or digital display that indicates the measurement value.
Scale: The scale on the gauge helps interpret the measurement. It may be marked in units such as PSI (pounds per square inch) or degrees Celsius.
Needle or Pointer: The needle or pointer moves to indicate the measured value on the scale. It is crucial to observe the position accurately.
Calibration: Gauges require proper calibration for accurate readings. Check if the gauge is calibrated and within its specified accuracy range.
Units of Measurement: Understand the units used by the gauge and ensure they align with the intended measurement.
Zero Point: Some gauges have an adjustable zero point to account for any initial offset. Make sure to set the zero point correctly before measurements.
Operating Range: Familiarize yourself with the gauge’s operating range, ensuring that measurements fall within the specified limits.
Warning Indicators: Some gauges may have warning indicators like red zones or blinking lights to alert you when measurements reach critical levels.

Remember to refer to the manufacturer’s instructions and guidelines for specific details about the gauge components you are working with.

Inspecting the Gauge for Any Damage or Wear

Inspecting the gauge is crucial to identify any damage or wear that may affect its functionality. Here are the key steps to follow:

Visual Examination: Carefully examine the gauge for any signs of cracks, dents, or other visible damage.
Dial Inspection: Check if the dial is intact and free from scratches or fading. Ensure that it rotates smoothly without any resistance.
Needle Alignment: Verify if the needle is aligned with the zero mark when the gauge is at rest. Misalignment could indicate internal issues.
Glass Inspection: Inspect the glass or transparent cover for any cracks, chips, or fogging that might impair visibility.
Connections: Check the connections between the gauge and the instrument panel for looseness or corrosion. Ensure the gauge is securely mounted.
Function Test: If possible, perform a functional test to confirm the gauge’s accuracy and responsiveness.

If any damage or wear is detected, it is recommended to replace or repair the gauge to maintain accurate readings and ensure proper operation.

Preparing the PEX Pipe for Measurement

To prepare the PEX pipe for measurement, follow these steps:

Clean the pipe: Use a clean cloth or rag to wipe off any dirt, debris, or moisture from the surface of the PEX pipe. This will ensure accurate measurements and prevent any interference.
Cut the pipe: Measure the desired length of the PEX pipe using a tape measure or ruler. Mark the measurement on the pipe using a permanent marker. Then, use a pipe cutter or a suitable cutting tool to make a clean and precise cut along the marked line.
Deburr the edges: After cutting the pipe, use a deburring tool or a utility knife to remove any burrs or rough edges from the cut ends. Smooth the edges carefully to avoid damaging the pipe or affecting the measurement accuracy.
Inspect for damage: Examine the PEX pipe for any signs of damage, such as cracks, splits, or deformities. If you notice any issues, consider replacing the pipe to ensure accurate measurements and prevent leaks or failures.
Prepare for installation: Once the pipe is clean, cut, deburred, and inspected, it is ready for installation. Follow the appropriate installation guidelines and procedures for your specific application, ensuring proper fittings, connections, and support as necessary.

Remember to take precise measurements and exercise caution when handling the PEX pipe to ensure successful installation and reliable performance.

Positioning the Gauge on the PEX Pipe

To position the gauge on the PEX pipe, follow these steps:

Choose the location: Select a suitable spot on the PEX pipe where you want to install the gauge. It should be easily accessible and visible for monitoring purposes.
Prepare the pipe: Clean the area of the PEX pipe where the gauge will be placed. Remove any dirt, debris, or moisture that may interfere with the gauge’s adhesive or accuracy.
Apply adhesive: Apply a suitable adhesive or glue to the backside of the gauge. Ensure you use an adhesive that is compatible with PEX and can withstand the temperature and pressure conditions.
Position the gauge: Carefully place the gauge on the desired location of the PEX pipe, ensuring it aligns properly. Apply firm pressure to ensure a strong bond between the gauge and the pipe.
Allow drying/curing time: Follow the manufacturer’s instructions regarding drying or curing time for the adhesive. Avoid disturbing or applying pressure to the gauge until it is fully secured.
Test and verify: Once the adhesive has fully cured, test the gauge to ensure it is accurately measuring the pressure in the PEX pipe.

Remember to refer to the manufacturer’s guidelines and instructions for the specific gauge and adhesive you are using to ensure proper installation.

Understanding the Go and No-Go Measurements

Go and No-Go Measurements refer to a set of criteria or standards used to determine whether a particular condition or situation meets the required specifications to proceed (Go) or fails to meet them (No-Go). These measurements are commonly used in various fields, including engineering, manufacturing, and quality control, to ensure that processes, products, or projects meet the desired standards.

Understanding Go and No-Go Measurements is essential for decision-making and quality assurance. They help in assessing whether a system or process is operating within acceptable limits, ensuring safety, efficiency, and reliability. Key points to consider when interpreting Go and No-Go Measurements include:

Criteria: Clearly defined criteria must be established beforehand to define what constitutes a successful outcome (Go) and what indicates a failure (No-Go).
Thresholds: Threshold values or ranges are set to determine whether the measurements fall within acceptable limits.
Consistency: Go and No-Go Measurements should be consistent, replicable, and aligned with the desired outcomes.
Decision-making: Based on the results, appropriate actions are taken, such as approving a product for release or initiating corrective measures to address any identified issues.

Overall, understanding and applying Go and No-Go Measurements effectively enable organizations to maintain quality, control processes, and ensure compliance with desired standards.

Interpreting the Results of the Gauge Measurement

Interpreting the Results of the Gauge Measurement

When interpreting the results of a gauge measurement, there are several key points to consider:

Accuracy: Evaluate the accuracy of the gauge measurement by comparing it to a known standard or reference value. This will help determine the level of precision in the measurement.
Tolerance: Take into account the tolerance specifications for the gauge. If the measured value falls within the acceptable range of tolerance, it can be considered as meeting the required standards.
Variability: Assess the variability in the measured values. If the measurements exhibit consistent and repeatable results, it indicates a higher level of reliability.
Context: Consider the context in which the gauge measurement was conducted. Understand the purpose of the measurement and how it relates to the overall objective.
Environmental Factors: Account for any environmental factors that could influence the measurement, such as temperature, pressure, or humidity. Ensure that the measurements are adjusted or compensated accordingly if necessary.
Documentation: Maintain detailed documentation of the measurement process, including any relevant calibration records, procedures followed, and any deviations or anomalies encountered.

By considering these factors, one can accurately interpret the results of the gauge measurement and make informed decisions based on the obtained data.

Identifying Acceptable Measurements with the Go Gauge

To identify acceptable measurements with the Go Gauge, follow these steps:

Inspect the Go Gauge: Ensure that the Go Gauge is in good condition, free from damage or wear that could affect its accuracy.
Measure the part: Use the Go Gauge to measure the dimensions of the part being inspected. Align the gauge with the corresponding features on the part.
Check for fit: If the part fits smoothly and completely within the Go Gauge, it is within acceptable measurements. Ensure there is no excessive play or tightness.
Record the measurements: Note down the measurements obtained with the Go Gauge for future reference and documentation.
Compare with specifications: Compare the recorded measurements against the specified tolerances provided by the engineering drawings or standards. If the measurements fall within the specified range, the part is considered acceptable.

Determining Unacceptable Measurements with the No-Go Gauge

The no-go gauge is used to determine whether a measurement falls within acceptable limits or not. It helps identify unacceptable measurements that are outside the specified tolerance range. Here’s how it works:

Select the appropriate no-go gauge for the specific measurement being checked.
Attempt to fit the no-go gauge into the part or feature being measured.
If the no-go gauge does not fit into the part, it indicates that the measurement is unacceptable and falls outside the specified tolerance range.
In contrast, if the no-go gauge fits into the part, it means that the measurement is within the acceptable limits.

By using the no-go gauge, manufacturers and inspectors can quickly and easily identify out-of-spec measurements that may require further adjustment or investigation.

Measuring PEX Pipe Diameter with the Go Gauge

The Go Gauge is an essential tool for measuring the diameter of PEX pipes accurately. Here are the steps to measure PEX pipe diameter using the Go Gauge:

Choose the appropriate Go Gauge that matches the intended pipe size. It should have a snug fit without forcing it into the pipe.
Insert the Go Gauge into the PEX pipe and ensure it sits flush against the pipe walls.
Inspect the fit: If the Go Gauge slides in easily or has excessive play, it indicates an undersized pipe diameter. If the Go Gauge cannot fit or requires excessive force, it suggests an oversized pipe diameter.
Record the findings: Note whether the pipe diameter matches the designated size or if it falls outside the acceptable tolerance range.
Repeat the process at various points along the PEX pipe length to ensure consistency.

By using the Go Gauge correctly, you can determine the diameter of PEX pipes accurately, ensuring proper fittings and optimal performance in plumbing applications.

Measuring PEX Pipe Diameter with the No-Go Gauge

PEX (cross-linked polyethylene) pipes are commonly used for plumbing applications due to their flexibility and durability. To ensure the proper fit of PEX fittings, it is important to measure the pipe diameter accurately. One way to accomplish this is by using a No-Go gauge. Here’s how it works:

Select a No-Go gauge specifically designed for the desired PEX pipe size.
Insert the gauge into the end of the PEX pipe.
If the gauge does not fit smoothly or goes beyond a certain point, it indicates that the pipe diameter is too large.
However, if the gauge fits snugly without excessive force, it confirms that the PEX pipe has the correct diameter.
It’s essential to use the appropriate No-Go gauge size for accurate measurements, as different PEX pipe sizes require different gauges.

By employing the No-Go gauge method, plumbers can ensure that the PEX pipe diameter meets the necessary specifications for reliable and leak-free plumbing installations.

Checking PEX Pipe Ovality with the Go Gauge

To check the ovality of a PEX pipe using a Go Gauge, follow these steps:

Inspect the PEX pipe: Ensure that the pipe is clean and free from any debris or damage before measuring its ovality.
Select the appropriate Go Gauge: Choose a Go Gauge that matches the size and specifications of the PEX pipe you are testing. It should have the correct diameter and shape to accurately assess the pipe’s ovality.
Insert the Go Gauge: Gently insert the Go Gauge into the PEX pipe, making sure it fits snugly. The Go Gauge should not experience any resistance or difficulty in sliding through the pipe.
Assess the results: Once the Go Gauge is fully inserted, carefully inspect the pipe. If the pipe retains its circular shape and the Go Gauge fits properly without any gaps or misalignment, the pipe is within the acceptable ovality tolerance.
Repeat the process: If necessary, repeat the procedure at various points along the length of the PEX pipe to ensure consistency and identify any irregularities or deviations.

Remember, using the Go Gauge is a reliable method for checking PEX pipe ovality, ensuring the pipe meets the required standards and specifications.

Checking PEX Pipe Ovality with the No-Go Gauge

Checking PEX Pipe Ovality with the No-Go Gauge

The No-Go Gauge is a valuable tool for checking the ovality of PEX pipes, ensuring their quality and reliability. Here’s how it works:

Select the appropriate No-Go Gauge for the specific PEX pipe size you are working with. Each gauge is designed to match a particular diameter range.
Insert the No-Go Gauge into the PEX pipe. The gauge has a specific shape that corresponds to the circular cross-section of the pipe.
Rotate the gauge inside the pipe while applying gentle pressure. If the pipe is within the acceptable ovality range, the gauge should move smoothly without any obstruction.
Observe any resistance or binding while rotating the gauge. If the gauge encounters difficulty or does not fit properly, it indicates that the pipe has excessive ovality.
Compare the results to the manufacturer’s specifications or industry standards. If the pipe fails the ovality test, it may need to be replaced or corrected before installation.

Regularly checking PEX pipe ovality with the No-Go Gauge helps ensure proper pipe quality and reduces the risk of future problems.

Inspecting PEX Pipe for Surface Defects with the Go Gauge

The Go gauge is an essential tool for inspecting PEX pipes for surface defects. It helps ensure that the pipes meet the required standards and are free from imperfections. To inspect the pipes, follow these steps:

Select a Go gauge that matches the intended size of the PEX pipe.
Insert the gauge into the pipe end and ensure a proper fit.
Check for any resistance or tightness when inserting the gauge. It should slide in smoothly if the pipe is defect-free.
Inspect the surface of the pipe along the gauge’s length. Look for any irregularities, such as bumps, roughness, or deformations.
Note any defects found during the inspection. These may indicate manufacturing or handling issues that need to be addressed.
Repeat the process for each section of the PEX pipe to ensure comprehensive inspection.

By performing this inspection with the Go gauge, you can identify and address any surface defects in the PEX pipe, ensuring its quality and reliability.

Inspecting PEX Pipe for Surface Defects with the No-Go Gauge

Inspecting PEX Pipe for Surface Defects with the No-Go Gauge

When inspecting PEX pipes for surface defects, the No-Go Gauge is a crucial tool to ensure quality. Here’s a simple step-by-step process:

Begin by selecting the appropriate No-Go Gauge for the PEX pipe size.
Inspect the pipe’s surface visually, looking for any visible defects such as cuts, scratches, or irregularities.
Align the No-Go Gauge with the PEX pipe and attempt to insert it into any potential defect areas.
If the No-Go Gauge does not fit smoothly into the defect-free portion of the pipe, it indicates a surface defect.
Repeat the process along the entire length of the pipe, checking for any inconsistencies.
Document and address any detected surface defects promptly to maintain the quality and integrity of the PEX pipe.

Remember, the No-Go Gauge is an essential tool to ensure that PEX pipes meet the required standards, providing reliable and safe plumbing systems.

Performing a Full Inspection of the PEX Pipe

To perform a full inspection of the PEX pipe, follow these steps:

Visual examination: Inspect the entire length of the PEX pipe, looking for any visible signs of damage, such as cracks, dents, or bulges.
Check fittings: Inspect the connections and fittings for any signs of leaks, corrosion, or loose connections. Ensure that the fittings are securely attached to the pipe.
Check for discoloration: Look for any discoloration on the surface of the PEX pipe, as it may indicate damage or chemical reactions. Pay special attention to areas near heat sources or chemicals.
Check for leaks: Run water through the PEX pipe and carefully observe for any leaks or dripping. Check both the exposed sections and areas hidden behind walls or in crawl spaces.
Inspect support brackets: Ensure that the PEX pipe is properly supported with appropriate brackets or clips along its length. Check for any loose or damaged support components.
Review documentation: Examine any available documentation, such as manufacturer’s guidelines or installation records, to ensure that the PEX pipe meets the required standards and specifications.
Consider professional inspection: If you’re unsure about the condition of the PEX pipe or if you suspect a problem, it’s recommended to seek professional assistance from a licensed plumber or inspector.

Remember, regular inspections are crucial to maintaining the integrity and functionality of the PEX pipe system.

Maintaining and Cleaning the PEX Go/No-Go Gauge

To maintain and clean the PEX Go/No-Go Gauge, follow these steps:

Inspect the gauge: Before use, visually inspect the gauge for any signs of damage or wear. Ensure that all components are intact and functioning properly.
Clean the gauge: Wipe the gauge with a clean, lint-free cloth to remove any dust or debris. If there are stubborn stains or residue, use a mild detergent or cleaning solution recommended by the manufacturer. Avoid using harsh chemicals or abrasive materials that could damage the gauge.
Check the calibration: Regularly verify the calibration of the gauge to ensure accurate measurements. If the gauge is out of calibration, contact the manufacturer for recalibration or replacement.
Store the gauge properly: When not in use, store the gauge in a clean and dry environment to prevent moisture buildup or damage. Use the protective case or packaging provided by the manufacturer to protect the gauge from impact or accidental damage.
Handle with care: Always handle the gauge with care to avoid dropping or mishandling, as this can affect its accuracy and longevity.

Remember to consult the manufacturer’s guidelines and recommendations for specific maintenance instructions related to your PEX Go/No-Go Gauge.

Conclusion

In conclusion, PEX Go/No-Go gauge is a valuable tool for ensuring the proper installation and functionality of PEX tubing connections. By following these simple steps, you can use the gauge effectively:

Inspect the gauge: Before use, check the gauge for any damage or defects that may affect its accuracy.
Prepare the PEX connection: Ensure that the PEX tubing is properly cut, deburred, and free from any debris or obstructions.
Insert the gauge: Gently insert the “Go” end of the gauge into the PEX fitting. It should slide in smoothly without any resistance.
Check the fit: If the “Go” end fits properly, proceed to test the connection with the “No-Go” end. It should not fit into the fitting, indicating a correctly sized connection.
Evaluate the results: If both ends of the gauge provide the expected fit, the PEX connection meets the required standards. If not, adjustments or corrections may be necessary.

By using the PEX Go/No-Go gauge correctly, you can ensure the reliability and safety of your PEX plumbing installations.

Frequently Asked Questions

Q: What is a PEX Go/No-Go Gauge?

A: A PEX Go/No-Go Gauge is a precision measuring tool used to ensure the correct installation of PEX (cross-linked polyethylene) fittings. It helps determine whether the installed fittings meet the specified dimensional requirements or not.

Q: How does a PEX Go/No-Go Gauge work?

A: The PEX Go/No-Go Gauge consists of two ends: the ‘Go’ end and the ‘No-Go’ end. The ‘Go’ end has the precise dimensions that the fittings should meet, while the ‘No-Go’ end has slightly larger dimensions. When the gauge is inserted into a PEX fitting, if the ‘Go’ end fits properly and the ‘No-Go’ end does not fit, it indicates that the fitting is within tolerance. If both ends fit or the ‘Go’ end does not fit, it means the fitting is out of tolerance.

Q: Why should I use a PEX Go/No-Go Gauge?

A: Using a PEX Go/No-Go Gauge is crucial to ensure the proper installation of PEX fittings. It helps maintain the integrity of the plumbing system by verifying that the fittings are within the specified dimensions. Properly installed fittings ensure a reliable connection and minimize the risk of leaks or other plumbing issues.

Q: When should I use a PEX Go/No-Go Gauge?

A: You should use a PEX Go/No-Go Gauge whenever you are installing PEX fittings. It is recommended to check the fittings after each installation to ensure they meet the dimensional requirements. Additionally, you can use the gauge during routine maintenance or when troubleshooting potential issues with your PEX plumbing system.

Q: How do I use a PEX Go/No-Go Gauge?

A: To use a PEX Go/No-Go Gauge, simply insert the gauge into the PEX fitting. Start by inserting the ‘Go’ end of the gauge. If it fits properly, try inserting the ‘No-Go’ end. If the ‘No-Go’ end does not fit, it means the fitting is within tolerance. If both ends fit or the ‘Go’ end does not fit, it indicates that the fitting is out of tolerance and may need to be replaced.

Ralph D. Moniz

Greetings! I’m Ralph D. Moniz, your reliable PEX plumbing service provider. Stay updated on all things plumbing by exploring my PEX System blog. Just search “PEX System” on popular search engines like Google or Yahoo. Need assistance? Contact me at https://pexsystem.com/contact/.