Size: 1/8''-6''(DN6-DN150)
Standard: EN10242 / ANSI / ASME B16.3 / DIN2950 / IS0 49 / NBR6943 / IS1879 / BS EN10242
Threaded Standard: EN10226 / ASME B.1.20.1 / DIN2999 / ISO7-1 / ISO228 / IS554 / BS EN10226
Work Pressures: PN25 / 2.5Mpa / 363PSI /CLASS 150 / 27Bar
UL Listed /FM Approved /CE /ABNT /TSE /SNI /ISI
Product Description
Maximum Pressure: 25 BAR (363PSI) (2.5MPA) CLASS 150
Maximum Temperature: 200°C (392°F)
Tensile Strength: 350MPA
Hardness: HB150 (Brinell)
Elongation Rate: 12%
Suitable Applications: Water, Oil, Gas, Petro-Chemical
Material: Malleable Iron
Easy installation and disassembly for pipeline maintenance
Taper seat design ensures tight sealing performance
Durable galvanized malleable iron construction
Compatible with BSP threaded pipe systems
Suitable for water, gas, and industrial applications
A BSP pipe fittings union taper seat is a type of threaded pipe fitting designed to connect two pipes while allowing easy disassembly and maintenance. It is mainly composed of a nut, cloud head, and flat joint. It features a tapered sealing surface that ensures a tight and leak-resistant connection without the need for additional sealing materials in some applications.
Union fittings are widely used in piping systems where frequent maintenance or replacement is required.

Manufactured from durable malleable iron, providing excellent strength and long service life.
Hot-dip galvanizing protects against rust, making the fittings suitable for harsh environments.
BSP threads are accurately machined to ensure easy installation and secure connection.
The taper seat design improves sealing performance and reduces leakage risk.
We specialize in medium to large-volume orders, with a typical MOQ of around 5 tons. Pricing is optimized based on product specifications and order combinations.
These fittings are widely used in:
Water supply systems
Gas distribution pipelines
Fire protection systems
Industrial piping systems
They are ideal for systems requiring frequent maintenance or easy pipe disconnection.
| Type | Sealing Method | Advantage | Application |
|---|---|---|---|
| Taper Seat | Metal-to-metal | Strong sealing | High-pressure systems |
| Flat Seat | Gasket sealing | Easy replacement | Low-pressure systems |
Taper seat unions are preferred for more demanding environments due to their durability and sealing performance.
Ensure compatibility with BSP, NPT, or other standards
Taper seat → better sealing
Flat seat → easier maintenance
Choose galvanized fittings for corrosion resistance
Consider pressure, temperature, and medium
Product Dimensions

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Looking for a reliable supplier of BSP pipe fittings?
We provide high-quality union fittings for global distributors and project contractors.
Our typical MOQ is around 5 tons (approximately USD 15,000), with flexible pricing based on product specifications.
Trial orders and mixed product inquiries are also welcome depending on project needs.
Contact us today to get:
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ABOUT JIANZHI
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Contact Us
E-mail: sales1@jianzhi-fitting.com
Tel: +86 15822792427
Office In Tianjin:
Heping District, Tianjin, China.
Production Base 1:
Chifeng, Inner Mongolia, China.
Production Base 2:
Tangshan City, Hebei Province, China.
Production Base 3:
Schelei Street,Baicoi City,Prahova County,Romania