Malleable iron Flange Fig 321 A197 NPT ASTM

Product Features (Specifications – Plain English List)

• Standard: ASTM A197
• Type: Flange Fig 321 A197 NPT
• Material: Black Heart Malleable Iron
• Pressure Class: 150LB / 300LB
• Temperature Range: -20℃ ~ 230℃
• Thread Standard: NPT / BSP
• Surface Treatment: Black / Electro-galvanized / Hot-dip Galvanized
• Applicable Media: Water, hot water, oil, gas, compressed air, fire water, low-pressure steam

Specifications Table (Dimensions & Parameters)

Product Applications

• Fire Protection Systems: Flange Fig 321 A197 NPTconnection between sprinkler networks and valves or equipment
• Water Supply & Drainage: Flange Fig 321 A197 NPTfixing between building pipelines and water pumps or water meters
• HVAC & Heating: Flange Fig 321 A197 NPTconnection for boiler and radiator system pipelines
• Industrial Pipelines: Equipment connection for compressed air and low-pressure steam pipelines
• Gas Engineering: Connection between gas pipelines and valves or pressure regulating equipment
• Marine & Mining: Flange Fig 321 A197 NPTfixing systems for general low-pressure fluid pipelines

Installation and Maintenance

Installation

1. Inspect the Flange Fig 321 A197 NPTbefore installation to ensure no sand holes, cracks, deformation and intact threads and sealing surface
2. Clean impurities at pipe ends, Flange Fig 321 A197 NPTsealing surfaces and bolt holes to ensure clean connection
3. Wind PTFE tape clockwise or apply pipe thread sealant on male threads
4. Install the Flange Fig 321 A197 NPTon the pipeline, align the mating Flange Fig 321 A197 NPT and tighten bolts evenly
5. Pressure test after installation; put into use only after confirming no leakage and looseness

Maintenance

1. Regularly check Flange Fig 321 A197 NPTseals for leakage, loose bolts and surface corrosion
2. Paint anti-rust paint regularly in outdoor or humid environments to extend service life
3. Replace immediately in case of cracks, deformation, seal failure or serious corrosion

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FAQ

• Can you supply OEM?

OEM is available. We can customize the product according to your specific requirements, including logo printing and packaging design.

• What’s the MOQ?

The MOQ is 500 pieces. For customized products with special sizes or surface treatments, the MOQ may vary.

• How about the order processing and lead time?

After order confirmation and receipt of the advance payment, we will arrange production. Generally, the products can be ready for shipment within 15-20 working days. Once dispatched, we will notify you and provide all necessary documents for customs clearance.

• What quality will be ensured?

All products are 100% new and undergo strict quality inspections, including pressure testing and dimensional checks, before delivery. We use sturdy wooden crates or cartons to ensure the products are well-protected during transportation.

• Can you guide the installation?

Yes, we provide detailed installation instructions in English and other major languages. Our technical support team is also available for online consultation and guidance if needed.

Contact Information

Sales Inquiry:
Provide contact information for sales inquiries.

Email: [email protected]

Phone: +86 13012223295

Technical Support

If you have any questions regarding product installation, commissioning, operation or maintenance, please contact our technical support team for professional assistance:

Email: [email protected]