Malleable iron Union Fig 340 A197 NPT(taper seat) ASTM

Malleable iron Union Fig 340 A197 NPT(taper seat) ASTM

Product Overview

This malleable iron taper seat Union Fig 340 A197 NPT is manufactured in accordance with ASTM standards. It adopts a tapered sealing structure that achieves tight sealing without gaskets, allowing easy assembly and disassembly for pipeline inspection and maintenance. 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 for firm connection, it is available in black, electro-galvanized or hot-dip galvanized finish. Corrosion-resistant and easy to install, it is widely used in water, gas, steam, fire protection and various industrial low-pressure fluid piping systems.

Product details

Malleable iron union(taper seat) ASTM A197 NPT Drawing

Product Features (Specifications – Plain English List)

  • Standard: ASTM A197
  • Type: Taper Seat Union Fig 340 A197 NPT
  • Material: Black Heart Malleable Iron
  • Pressure Class: 150LB / 300LB
  • Temperature Range: -20℃ ~ 230℃
  • Thread Standard: NPT / BSP
  • Seal Type: Taper Seat
  • 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) PCS/CTN.
1/4” DN8 42 200
3/8” DN10 45 200
1/2” DN15 47 180
3/4” DN20 51.5 120
1” DN25 57 88
1 1/4” DN32 65 56
1 1/2” DN40 71 36
2” DN50 79 28
2 1/2” DN65 85.5 12
3” DN80 94.5 10
4” DN100 110.5 6

 Product Applications

  • Fire Protection Systems: Connection for maintenance sections of sprinkler pipelines
  • Water Supply & Drainage: Easy disassembly and assembly connections for building pipelines
  • HVAC & Heating: Union Fig 340 A197 NPTconnection for boiler and radiator systems
  • Industrial Pipelines: Maintenance connections for compressed air and low-pressure steam pipelines
  • Gas Engineering: Safe detachable connections for gas pipelines
  • Marine & Mining: General low-pressure fluid pipeline Union Fig 340 A197 NPTsystems

Installation and Maintenance

Installation

  1. Inspect all parts of the Union Fig 340 A197 NPTbefore installation to ensure no sand holes, cracks, deformation and intact threads
  2. Clean impurities and burrs at pipe ends to ensure clean connecting surfaces
  3. Tighten both ends of the Union Fig 340 A197 NPTto corresponding pipelines and align the tapered sealing surfaces
  4. Tighten the Union Fig 340 A197 NPTnut evenly to achieve tight sealing between tapered faces
  5. Conduct pressure test after installation and use only after confirming no leakage and looseness

Maintenance

  1. Regularly check joints for leakage, nut looseness and surface corrosion
  2. Paint anti-rust paint regularly for outdoor or humid environments to extend service life
  3. Replace the whole Union Fig 340 A197 NPTimmediately in case of sealing failure, cracks or serious corrosion

Related Products

  • Malleable iron Union Fig 340 A197 NPT(flat seat)
  • Malleable iron hex nipple
  • Malleable iron bushing
  • Malleable iron round cap
  • Malleable iron plain plug
  • Full range of ASTM malleable iron pipe fittings

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]

Related products

Malleable iron union(taper seat) ASTM A197 NPT Galvanized
Malleable Iron Union Fig 330 A197 NPT (Flat seat) ASTM
Malleable iron M&F bend ASTM A197 NPT Black finish
Malleable iron M&F Bend Fig 1 A197 NPT ASTM
Malleable iron reducing socket M&F ASTM A197 NPT Galvanized
Malleable iron reducing Socket Fig 246 A197 NPT M&F ASTM
Malleable iron solid plug ASTM A197 NPT Black finish
Malleable iron solid Plug A197 NPT ASTM

FLUID TECH PIPING SYSTEMS (TIANJIN) CO.,LTD

Address: