Malleable Iron Union(Brass Seat) is a detachable fitting with both female threaded connections. It consists of a tail or male part, a head or female part, and a union nut, with brass seat.
The Model Union Fig 342 BSPT is a BS EN 10242 standard malleable iron Union Fig 342 BSPT with brass seat design (taper/flat seat optional), used for detachable sealed connection in European standard piping systems, especially suitable for transporting corrosive media such as water, oil and gas or pipeline nodes requiring long-term stable sealing.
Are you looking for a reliable, corrosion-resistant, long-lasting sealing pipe Union Fig 342 BSPT that meets European standards?
This brass seat Union Fig 342 BSPT is made by precision casting with brass sealing seat (Cu-Zn alloy) featuring excellent corrosion resistance, thermal conductivity and sealing performance, perfectly combined with malleable iron body, ensuring firm connection, strong sealing and easy assembly in light and ordinary hazard piping systems with significantly extended service life.
Offered in a full range of nominal sizes, it is widely used in EU commercial buildings, factories, residential areas, hotels and BS EN standard fire systems, especially suitable for media transmission pipelines with high requirements for sealing performance and corrosion resistance.
| SIZE | A (MM) | PCS/CTN. | |
| 1/4” | DN8 | 42 | 200 |
| 3/8” | DN10 | 45 | 200 |
| 1/2” | DN15 | 47 | 180 |
| 3/4” | DN20 | 51 | 120 |
| 1” | DN25 | 56.5 | 88 |
| 1 1/4” | DN32 | 64 | 56 |
| 1 1/2” | DN40 | 70 | 36 |
| 2” | DN50 | 78.5 | 28 |
| 2 1/2” | DN65 | 84.5 | 12 |
| 3” | DN80 | 94 | 10 |
| 4” | DN100 | 110 | 6 |
① Inspection Schedule: Visual inspection quarterly; monthly in corrosive environments, checking brass seat sealing surface, thread condition and surface coating.
② Cleaning Method: Wipe the surface and brass sealing area with clean soft cloth; do not use sharp tools or strong acid/alkali solvents to damage brass seat and threads.
③ Replacement Cycle: Replace after 20–25 years of normal use (5–10 years longer than ordinary iron seats), or immediately if thread slipping, brass seat deformation or sealing failure occurs.
④ Disassembly Tips: Loosen the nut symmetrically during disassembly to avoid thread damage caused by brass seat adhesion; check brass seat integrity during reinstallation and replace if necessary.
Recommendation: Matching with EN series BS EN standard malleable iron fittings to build a fast-maintenance, stable and corrosion-resistant European standard piping system. The brass seat Union Fig 342 BSPT is especially suitable for transporting corrosive media or pipeline nodes with high sealing performance requirements.
OEM is available. We can customize the product according to your specific requirements, including logo printing and packaging design.
The MOQ is 500 pieces. For customized products with special sizes or surface treatments, the MOQ may vary.
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.
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.
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.
Sales Inquiry:
Provide contact information for sales inquiries.
Email: [email protected]
Phone: +86 13012223295
If you have any questions regarding product installation, commissioning, operation or maintenance, please contact our technical support team for professional assistance:
Email: [email protected]
