BSP Connection Fittings
Nipples, reducers, reverse connectors, elbows, sleeves, tees and plugs.
20 products · 179 variants
What are bsp connection fittings?
BSP (British Standard Pipe) is an inch-based pipe thread with a 55° thread angle and the most common connection on hydraulic and pneumatic equipment in Türkiye. It comes in parallel (BSPP / “G”) and tapered (BSPT / “R”) forms: parallel threads seal on a washer or cone face, tapered threads seal on the thread itself. The size name refers to the pipe bore, not the outside diameter.
BSP Pipe Nipple
Equal-size nipple joining two BSP pipe threads.
Details & Table → BSP Reducing Nipple
Reducing nipple connecting different BSP pipe thread sizes.
Details & Table →
BSP Bulkhead Nipple
BSP-thread bulkhead pass-through nipple.
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BSP Short Reducer
Short-body BSP reducer (large to small thread).
Details & Table → BSP Nozzle Reducer
BSP nozzle (long) type reducer.
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BSP Reverse Fitting
BSP pipe-thread reverse fitting.
Details & Table → BSP Reverse Elbow
90° BSP pipe-thread reverse (female) elbow.
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BSP Female Elbow
90° BSP pipe-thread female-female elbow.
Details & Table → NPT - BSP Male Elbow
90° NPT/BSP male-thread elbow.
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BSP Tee
Three-way BSP pipe-thread tee.
Details & Table → BSP Tail Elbow (NPT-BSP)
90° tail elbow with NPT male to BSP female transition.
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BSP Coupling (Socket)
Female-female coupling joining two BSP pipe threads.
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BSP Weld-on Coupling
Weld-on BSP female coupling.
Details & Table → BSP Male Weld-on Nipple
Weld-on BSP male-thread nipple.
Details & Table → BSP Male Tee
Three-way BSP pipe-thread male tee.
Details & Table → BSP Branch Tee
Side-branch BSP pipe-thread tee.
Details & Table → BSP Run Tee
Center-branch BSP pipe-thread tee.
Details & Table →
BSP Plug - Allen Head
Allen-head plug for closing unused BSP ports.
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BSP Plug - Hex Head
Hex-head plug for closing unused BSP ports.
Details & Table →
BSP Cap - Blind Nut
BSP female (nut) blind cap closing a line end.
Details & Table →What to look for
- Parallel or tapered
- BSPP (G) is assembled with a washer or O-ring, BSPT (R) with sealing tape or liquid sealant. Forcing a tapered thread into a parallel port can crack the port.
- The size trap
- A 1/2" BSP thread actually measures about 21 mm across. The inch figure comes from the pipe bore — measure with a caliper and use the guide table rather than reading the inch value directly.
- Body shape
- Nipple, reducer, reverse, elbow, sleeve, tee and plug bodies are available. When ordering a reducer, state both the inlet and outlet thread.
- Material
- Steel is used on hydraulic lines; brass on low-pressure pneumatic and water lines. Stainless is recommended in marine environments.
Frequently asked
Can BSP and NPT be connected?
They should not be. BSP is 55°, NPT is 60°, and the pitches differ. The first few turns may engage but the joint will not seal and can separate under pressure.
How do I tell BSPP from BSPT?
Measure the outside diameter along the thread with a caliper: if it stays constant the thread is parallel (BSPP/G); if it narrows towards the end it is tapered (BSPT/R).
How do I stop a BSP joint leaking?
On a parallel thread check whether the O-ring or bonded seal is crushed; on a tapered thread renew the sealing tape. If the thread is stripped the part must be replaced — tightening further will not fix it.