Malleable iron solid Plug A197 NPT ASTM

Product Overview

This malleable iron solid Plug A197 NPT is manufactured in accordance with ASTM standards. It is used for end sealing, blocking and reserved ports in piping systems with firm sealing and stable pressure resistance. Made of high-quality black heart malleable iron with high-temperature annealing, it features good toughness, high strength and impact resistance. With high-precision threads and reliable sealing, it is available in black, electro-galvanized or hot-dip galvanized finish, corrosion-resistant and easy to install, widely used in water, gas, steam, fire protection and various low-pressure industrial fluid piping systems.

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Product details

Malleable iron solid plug has male thread on one side. It is used to close the end of the pipe.

Product Features (Specifications – Plain English List)

Standard: ASTM A197
Type: Solid Plug 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)

SIZE		A (MM)
1/8″	DN6	15.5
1/4”	DN8	18.3
3/8”	DN10	20.1
1/2”	DN15	23.9
3/4”	DN20	27.2
1”	DN25	31.8
1 1/4”	DN32	34.5
1 1/2”	DN40	36.9
2”	DN50	39.7
2 1/2”	DN65	46
3”	DN80	49
4”	DN100	64.5

Product Applications

Fire Protection Systems: Sealing reserved ports in sprinkler networks
Water Supply & Drainage: End sealing of pipelines
HVAC & Heating: Port Plug A197 NPTging for boiler and radiator systems
Industrial Pipelines: Blanking for compressed air and steam pipelines
Gas Engineering: Sealing for gas pipeline ports
Marine & Mining: End Plug A197 NPTging for low-pressure fluid pipelines

Installation and Maintenance

Installation

Inspect the solid Plug A197 NPTbefore installation to ensure no cracks, deformation and intact threads
Clean impurities on internal threads of fittings to ensure clean connection
Wind PTFE tape clockwise or apply pipe thread sealant on male threads
Tighten the Plug A197 NPTevenly with a wrench to proper sealing, avoid overloading
Pressure test after installation; put into use only after confirming no leakage

Maintenance

Regularly check the Plug A197 NPTfor leakage, looseness and corrosion
Apply anti-rust treatment in outdoor or humid environments to extend service life
Replace in time if cracks, thread slipping or seal failure occurs

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]