Do I need thread tape or sealant to install this fitting?

BSP parallel (BSPP) threads typically require PTFE thread tape or a compatible thread sealant to achieve a leak-free seal, as the thread form itself is not self-sealing. Apply 2–3 wraps of PTFE tape in the direction of the thread before assembly. BSP tapered (BSPT) threads can seal on the thread taper but still benefit from tape or sealant.

What applications is this union connector suitable for?

This fitting is generally suitable for water supply lines, compressed air systems, hydraulic circuits, gas lines (verify local code compliance), industrial fluid transfer, and irrigation systems. The union design allows the line to be disconnected without rotating the pipes, making it ideal for maintenance-heavy installations.

304 Stainless Steel BSP Female Male Union Connector Pipe Fitting — DN8 to DN50

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304 Stainless Steel BSP Female Male Union Connector Pipe Fitting — DN8 to DN50

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Product material: 304 stainless steel

Size：: DN8（1&4"）

Amount:: 1pcs

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304 Stainless Steel BSP Female Male Union Connector — Reliable Pipe Fitting for Plumbing & Industrial Use

Leaking joints and hard-to-service pipe runs are a constant headache for plumbers, maintenance technicians, and serious DIYers. Whether you're building a new water supply line, maintaining a compressed air system, or replacing a corroded fitting in a tight space, you need a connector that threads on cleanly, holds pressure, and can be taken apart again without cutting the pipe. This 304 stainless steel BSP female male union connector is built for exactly that job.

Each unit is a three-piece union-style pipe fitting adaptor machined from 304 stainless steel, combining a female BSP threaded end, a male BSP threaded end, and a union nut that draws the two halves together against an internal seat for a leak-resistant seal. Available in eight DN sizes from DN8 (1/4") through DN50 (2"), covering the most common nominal bore sizes used in residential and light industrial plumbing. Sold individually (1 pc per order); select your required size from the variant options above.

Typical use cases include connecting stainless steel or galvanized water supply lines where future serviceability matters, joining sections of compressed air distribution pipe in workshops and garages, and adapting between male and female BSP threaded components in hydraulic or pneumatic circuits. The union design is particularly valued in boiler rooms, pump installations, and irrigation manifolds where periodic disassembly is expected.

🔗 Thread Compatibility: BSP (British Standard Pipe) threads — fits BSPP and BSPT systems. Not directly compatible with NPT threads. Verify your existing fittings before ordering.

✅ Key Features of These 304 Stainless Steel BSP Union Connector Pipe Fittings

🔩Union Three-Piece Design — The union nut allows the fitting to be assembled and disassembled without rotating the connected pipes, making it ideal for maintenance-accessible plumbing and compressed air line installations.
🛡️304 Stainless Steel Construction — Resists rust and oxidation in water supply, irrigation, and light industrial fluid transfer applications where carbon steel fittings would corrode over time.
📐Eight DN Sizes Available — Covers DN8 (1/4") through DN50 (2"), matching the most common BSP nominal bore sizes used in residential plumbing, workshop air lines, and hydraulic systems.
⚙️Female × Male BSP Thread Configuration — One end accepts a male BSP fitting; the other presents a male BSP thread, allowing this adaptor to bridge female-to-male connections in a single compact body.
💧Leak-Resistant Seat Interface — The union nut draws the two halves together against a machined seat, creating a secure seal when used with PTFE thread tape or appropriate thread sealant on the BSP threads.
🏭Broad Application Range — Suited for water lines, compressed air distribution, hydraulic circuits, gas lines (verify local code), and irrigation manifolds where a serviceable stainless steel pipe fitting adaptor is required.

📐 Technical Specifications — BSP Union Connector Pipe Fitting

Product Type	Female Male Union Connector Pipe Fitting Adaptor
Thread Standard	BSP (British Standard Pipe)
Material	304 Stainless Steel
Connection Style	Female × Male, Three-Piece Union
Available Sizes (DN)	DN8 (1/4") · DN10 (3/8") · DN15 (1/2") · DN20 (3/4") · DN25 (1") · DN32 (1-1/4") · DN40 (1-1/2") · DN50 (2")
Finish	Brushed / Mill finish stainless steel
Working Pressure	Typically up to 150 PSI (≈10 bar) — confirm for your application
Suitable Media	Water, compressed air, hydraulic fluid, gas (verify local code)
Quantity per Order	1 pc
Outer Dimensions	See variant options — varies by DN size
Compatible Standards	BSPP / BSPT — Contact us to confirm if mixing thread forms

⚠️ Before ordering: Confirm your existing fittings use BSP threads (not NPT). BSP and NPT threads have different thread angles and pitches and are not interchangeable without an adapter.

❓ Frequently Asked Questions

How do I choose the right DN size for my pipe?

DN (Diameter Nominal) refers to the nominal bore of the pipe, not the outer diameter. Match the DN size to your existing pipe's nominal bore:

DN8 = 1/4" BSP
DN10 = 3/8" BSP
DN15 = 1/2" BSP
DN20 = 3/4" BSP
DN25 = 1" BSP
DN32 = 1-1/4" BSP
DN40 = 1-1/2" BSP
DN50 = 2" BSP

When in doubt, measure the outer diameter of your pipe and cross-reference a BSP pipe sizing chart, or contact us with your measurements.

What thread standard does this fitting use — is it compatible with NPT?

This fitting uses BSP (British Standard Pipe) threads, also known as G-thread or Whitworth pipe thread. BSP is widely used in plumbing, hydraulics, and pneumatic systems across the US, UK, Australia, and Asia. It is not directly compatible with NPT (National Pipe Taper) threads — BSP and NPT have different thread angles (55° vs 60°) and pitches. A BSP-to-NPT adapter is required if your existing system uses NPT fittings.

Can this union connector be used outdoors or in wet environments?

Yes. 304 stainless steel offers good corrosion resistance in most outdoor and wet environments and is generally suitable for freshwater plumbing, garden irrigation, and light industrial use. For highly corrosive environments — such as saltwater exposure, chlorinated water systems, or chemical contact — 316 stainless steel is typically recommended for longer service life.

What is the pressure rating of this fitting?

304 stainless steel BSP union connectors of this type are generally rated for working pressures up to approximately 150 PSI (≈10 bar), depending on size and installation conditions. Larger DN sizes typically have lower pressure ratings. Always verify the pressure rating against your specific system requirements and consult a qualified engineer for critical or high-pressure applications.

Do I need thread tape or sealant to get a leak-free connection?

For the BSP threaded ends: BSPP (parallel) threads require PTFE thread tape or a compatible thread sealant to seal, as the thread form is not self-sealing. Apply 2–3 wraps of PTFE tape in the direction of the thread before assembly. BSPT (tapered) threads can seal on the taper but still benefit from tape or sealant for a reliable leak-free joint. The union interface seals at the internal machined seat — ensure it is clean and undamaged before assembly.

What applications is this BSP union connector suitable for?

This fitting is generally suitable for:

Residential and commercial water supply lines
Compressed air distribution in workshops and garages
Hydraulic circuits and fluid transfer systems
Gas lines — verify compliance with local codes before use
Irrigation manifolds and garden water systems
Boiler rooms and pump installations where periodic disassembly is needed

The union design is particularly valued wherever the line may need to be broken for maintenance without cutting or rotating the pipe.

Is this fitting compatible with copper or PVC pipes?

This is a threaded BSP fitting designed to connect to other BSP-threaded components. It can connect to copper, stainless steel, or galvanized steel pipes that have been fitted with BSP-threaded ends or adapters. Direct connection to plain PVC pipe requires a BSP-threaded PVC adapter. In most cases, a dissimilar-metal isolation fitting is recommended when connecting stainless steel to copper to prevent galvanic corrosion.

🛒 Select your material and size above, then add to cart — ships from our US warehouse.

304 Stainless Steel BSP Female Male Union Connector Pipe Fitting — DN8 to DN50

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Beschreibung

304 Stainless Steel BSP Female Male Union Connector — Reliable Pipe Fitting for Plumbing & Industrial Use

✅ Key Features of These 304 Stainless Steel BSP Union Connector Pipe Fittings

📐 Technical Specifications — BSP Union Connector Pipe Fitting

❓ Frequently Asked Questions

304 Stainless Steel BSP Female Male Union Connector Pipe Fitting — DN8 to DN50

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