Stainless Steel 304 Full Socket Pipe Coupler — BSP Threaded Fitting (1/4" to 4")

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Stainless Steel 304 Full Socket Pipe Coupler — BSP Threaded Fitting (1/4" to 4")

Name: Stainless Steel 304 Full Socket Pipe Coupler — BSP Threaded Fitting (1/4" to 4")
Brand: HomeDIYer
Price: 3.47 USD
Availability: InStock

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Sizes: BSP 1&4" (DN8)

Amount: 1 pcs

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$3.47 USD

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SS304 Full Socket BSP Pipe Coupler — Reliable In-Line Connection for Threaded Pipe Systems

When a threaded pipe joint leaks, corrodes, or simply won't seal, the fitting is usually the weak link. Plumbers, pipefitters, and facility maintenance teams working with BSP pipe systems need a full socket coupler that threads on cleanly, holds pressure, and doesn't rust out after a season of service. These stainless steel 304 full socket BSP pipe couplers are built for exactly that job.

Each coupler is machined from 304 stainless steel with female BSP threads on both ends, allowing two male-threaded pipes to be joined in-line. Available in 11 sizes from BSP 1/4" (DN8) to BSP 4" (DN100) — covering the full range of common pipe nominal bores used in plumbing, HVAC, and light industrial piping. Sold individually (1 pcs per order); bulk quantity options available via variant selection.

Typical applications include water supply line repairs, compressed air distribution networks, steam pipe connections, and industrial fluid transfer systems where BSP threaded pipe fittings are the standard. The full socket design is also widely used in fire suppression risers and chemical dosing lines where a secure, all-threaded joint is required.

🔗 Thread Compatibility: BSP (British Standard Pipe) threads — BSPP (parallel, G-series) or BSPT (tapered, R-series). Not interchangeable with NPT threads. Confirm your pipe thread standard before ordering.

✅ Key Features of These SS304 Full Socket BSP Pipe Couplers

🔩 Full-Length Female BSP Threads on Both Ends — The full socket design threads onto two male BSP pipe ends for a secure, in-line pipe-to-pipe connection without welding or compression sleeves.
🛡️ 304 Stainless Steel Construction — Resists rust, oxidation, and general corrosion in water, air, and mild chemical service — a significant durability advantage over carbon steel or brass fittings in wet environments.
📏 11 Sizes from DN8 to DN100 — Covers BSP 1/4" through BSP 4", matching the nominal bore range used across residential plumbing, commercial HVAC, and light industrial BSP threaded pipe systems.
⚙️ Machined Thread Accuracy — BSP threads are machined to standard tolerances for consistent engagement with compatible male-threaded pipe ends, reducing the risk of cross-threading or incomplete seating.
🌡️ Suitable for Water, Air, Steam & Mild Chemicals — 304 stainless steel full socket couplers are generally rated for a broad range of media including potable water, compressed air, low-pressure steam, and non-aggressive process fluids.
🚚 Ships from US Warehouse — In-stock inventory means faster delivery for maintenance, repair, and operations (MRO) buyers who can't wait weeks for overseas shipments.

📐 Technical Specifications — BSP Full Socket Pipe Coupler

Product Type	Full Socket Pipe Coupler (Full Coupling)
Material	Stainless Steel 304 (SS304)
Thread Standard	BSP (British Standard Pipe) — BSPP or BSPT; confirm variant
Available Sizes	BSP 1/4" (DN8), 3/8" (DN10), 1/2" (DN15), 3/4" (DN20), 1" (DN25), 1-1/4" (DN32), 1-1/2" (DN40), 2" (DN50), 2-1/2" (DN65), 3" (DN80), 4" (DN100)
Connection Type	Female BSP threaded both ends
Pressure Rating	See variant options — typically higher for smaller sizes; contact us to confirm
Temperature Range	Contact us to confirm for your specific media and size
Surface Finish	Natural stainless steel (mill/machined finish)
Quantity per Order	1 pcs (single piece)
Compatible Media	Water, air, steam, oils, mild chemicals (confirm for aggressive media)
Standards	BSP thread per ISO 228 (BSPP) / ISO 7 (BSPT)

⚠️ Sizing Note: BSP sizes refer to nominal pipe bore, not the actual thread or fitting outer diameter. Always verify the BSP size designation on your existing pipe or fitting before selecting a variant. When in doubt, measure the male thread OD and cross-reference a BSP thread chart.

❓ Frequently Asked Questions

How do I choose the right BSP coupler size for my pipe?

Match the coupler size to your pipe's nominal bore, not its outer diameter. BSP 1/4" (DN8) fits pipes with roughly 13.16 mm (≈0.52") male thread OD; BSP 1" (DN25) fits approximately 33.25 mm (≈1.31") OD. When in doubt, measure the male thread OD and compare to a BSP thread dimension table. Select your size from the variant dropdown above.

What pressure rating do these full socket couplers typically handle?

SS304 BSP full socket couplers generally handle working pressures in the range of 150–3000 PSI depending on size and wall thickness. Smaller sizes (1/4"–1/2") typically carry higher pressure ratings than larger sizes (2"–4"). Contact us to confirm the rated pressure for your specific size before use in high-pressure applications.

Are these couplers suitable for outdoor or corrosive environments?

Yes. 304 stainless steel provides good corrosion resistance in most outdoor, humid, and mildly corrosive environments. For highly chlorinated water, marine/saltwater, or aggressive chemical service, 316 stainless steel is generally recommended instead. Contact us if you need 316 SS options.

What thread standard do these fittings use — BSP or NPT?

These fittings use BSP (British Standard Pipe) threads, which are not directly interchangeable with NPT (National Pipe Taper) threads common in North American plumbing. BSP threads have a 55° thread angle vs. NPT's 60°, and the pitch and OD dimensions differ. Always confirm your existing pipe thread standard before ordering.

Do I need PTFE tape or thread sealant with these couplers?

For BSPT (tapered) threads, PTFE tape or a thread sealant compound is generally recommended to achieve a leak-free joint. For BSPP (parallel) threads, a face seal or bonded seal washer is typically used instead of tape. Check your fitting type and application requirements before assembly.

What is a full socket coupler and how does it differ from a half socket?

A full socket coupler (full coupling) has female BSP threads on both ends running the full length of the fitting, joining two male-threaded pipe ends in-line. A half socket has one threaded end and one plain/weld end. Full sockets are the standard choice when connecting two threaded pipes end-to-end without welding.

What fluids or media are these fittings compatible with?

SS304 full socket couplers are generally compatible with water, compressed air, low-pressure steam, oils, and many mild chemicals. They are not recommended for strong acids, high-concentration chlorides, or highly alkaline solutions. Always confirm media compatibility with your specific operating conditions before installation.

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

Stainless Steel 304 Full Socket Pipe Coupler — BSP Threaded Fitting (1/4" to 4")

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Description

SS304 Full Socket BSP Pipe Coupler — Reliable In-Line Connection for Threaded Pipe Systems

✅ Key Features of These SS304 Full Socket BSP Pipe Couplers

📐 Technical Specifications — BSP Full Socket Pipe Coupler

❓ Frequently Asked Questions

Stainless Steel 304 Full Socket Pipe Coupler — BSP Threaded Fitting (1/4" to 4")

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