1. Introduction
This manual provides essential instructions for the safe and effective installation, operation, and maintenance of the Parker 201579 Bolt Flange Kit. Adherence to these guidelines is crucial for ensuring the proper function, longevity, and safety of the assembled system. Please read this manual thoroughly before proceeding with any installation or maintenance procedures.
The Parker 201579 Bolt Flange Kit is designed for specific industrial applications requiring secure flange connections. Proper installation is critical to prevent leaks and ensure structural integrity.
2. Package Contents
Upon opening the package, verify that all components of the Parker 201579 Bolt Flange Kit are present and undamaged. The kit typically includes the following items:
- Bolts (threaded fasteners)
- Nuts (mating fasteners for bolts)
- Washers (if applicable, for load distribution and vibration dampening)

Figure 2.1: The Parker 201579 Bolt Flange Kit as received in its sealed plastic bag, showing the Parker branding and model number label.

Figure 2.2: A closer view of the components within the Parker 201579 Bolt Flange Kit, clearly showing the bolts and nuts, which are typically made of galvanized or similarly coated steel for corrosion resistance.
3. Setup and Installation
Proper installation is paramount for the integrity of the flange connection. Always refer to the specific flange assembly instructions provided by the equipment manufacturer for torque specifications and bolt patterns.
- Preparation: Ensure that the flange surfaces are clean, free from debris, and undamaged. Inspect the bolts, nuts, and washers (if included) for any defects.
- Alignment: Carefully align the two flanges to be joined, ensuring that the bolt holes are concentric.
- Gasket Placement: If a gasket is required, place it correctly between the flange faces. Ensure it is properly seated and not pinched.
- Bolt Insertion: Insert the bolts through the flange holes. If washers are used, place them under the nut and/or bolt head as specified by the application.
- Nut Engagement: Hand-tighten the nuts onto the bolts. Ensure sufficient thread engagement.
- Torquing Sequence: Follow a star or cross-pattern sequence for tightening the bolts to ensure even compression of the gasket and uniform load distribution across the flange. Tighten in stages (e.g., 30%, 60%, 100% of final torque).
- Final Torque: Use a calibrated torque wrench to apply the manufacturer's specified torque to each bolt. Do not overtighten, as this can damage the bolts, nuts, or flange, leading to failure.
Safety Note: Always wear appropriate personal protective equipment (PPE) during installation, including gloves and eye protection. Consult relevant safety data sheets and local regulations.
4. Operating Considerations
Once installed, the bolt flange connection is typically static. However, certain operational considerations are important:
- System Pressure/Temperature: Ensure the installed flange connection is rated for the operating pressure and temperature of the system.
- Vibration: In high-vibration environments, periodic checks for bolt loosening may be necessary. Consider using locking washers or thread-locking compounds if specified by the application.
- Environmental Factors: Protect the connection from corrosive environments if the bolt material is not inherently resistant.
5. Maintenance
Regular inspection and maintenance are crucial for the long-term reliability of the flange connection.
- Visual Inspection: Periodically inspect the bolts, nuts, and flange for signs of corrosion, cracks, deformation, or loosening.
- Retorquing: After initial operation or significant temperature cycles, it may be necessary to retorque the bolts to the specified values. Consult equipment manufacturer guidelines.
- Cleaning: Keep the area around the flange connection clean to prevent accumulation of corrosive substances.
- Replacement: If any component (bolt, nut, washer) shows signs of significant wear, damage, or corrosion, replace the entire kit or individual components with identical specifications. Do not reuse damaged fasteners.
6. Troubleshooting
Common issues related to bolt flange connections and potential solutions:
- Leakage:
- Cause: Insufficient torque, improper gasket installation, damaged gasket, damaged flange face, uneven bolt tightening.
- Solution: Retorque bolts following the correct sequence and torque values. Inspect and replace gasket if necessary. Check flange faces for damage.
- Loose Bolts:
- Cause: Vibration, thermal cycling, improper initial torque.
- Solution: Retorque bolts. Consider using locking mechanisms (e.g., lock washers, thread-locking compound) if appropriate for the application.
- Corrosion:
- Cause: Exposure to harsh environments, incompatible materials.
- Solution: Clean and protect the connection. Replace corroded components. Consider using more corrosion-resistant materials or coatings for future applications if environmental conditions are severe.
7. Specifications
The Parker 201579 Bolt Flange Kit is manufactured to specific standards. Key details include:
- Model Number: 201579
- Brand: Parker
- Manufacturer: PARKER
- ASIN: B017TEABYY
- Date First Available: January 23, 2018
For detailed dimensions, material composition, and performance ratings, refer to the official Parker product data sheets or contact Parker technical support.
8. Warranty Information
Parker products are typically covered by a standard manufacturer's warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary. Please retain your proof of purchase. For detailed warranty information, including coverage, limitations, and how to make a claim, please refer to the official Parker warranty statement available on their corporate website or contact Parker customer service directly.
9. Support and Contact
For technical assistance, product inquiries, or support regarding the Parker 201579 Bolt Flange Kit, please contact Parker customer service or your authorized Parker distributor. When contacting support, please have the model number (201579) and any relevant purchase information readily available.
You can typically find contact information on the official Parker website: www.parker.com





