Description
Stainless Steel Reducing Bush – 316 Grade
Our 316 Stainless Steel Reducing Bushes are designed to reduce the size of a female threaded connection, allowing a smaller male threaded fitting or pipe to be installed. Manufactured from high-quality 316 grade stainless steel, these fittings provide excellent corrosion resistance, strength and durability for industrial, agricultural and commercial pipework applications.
Featuring a male BSPT (British Standard Pipe Taper) external thread and a female BSPP (British Standard Pipe Parallel) internal thread, these reducing bushes provide a compact and reliable solution for adapting between different nominal BSP thread sizes.
Key Features
- Material: 316 Grade Stainless Steel
- Connection: Male BSPT x Female BSPP
- External Thread: BSPT (Tapered)
- Internal Thread: BSPP (Parallel)
- Pressure Class: 150 lbs (Class 150)
- Design: Male x Female Reducing Bush
- Corrosion Resistance: Excellent resistance to corrosion in demanding environments
- Construction: Durable stainless steel fitting for long-term performance
Typical Applications
- Industrial pipework and fluid transfer systems
- Water distribution and pumping installations
- Agricultural and irrigation systems
- Chemical processing applications, subject to compatibility
- Marine and coastal environments
- General engineering and mechanical installations
- Reducing female threaded connections to smaller BSP sizes
Technical Specifications
| Specification | Details |
|---|---|
| Product | Stainless Steel Reducing Bush |
| Material | 316 Stainless Steel |
| External Thread | Male BSPT (Tapered) |
| Internal Thread | Female BSPP (Parallel) |
| Pressure Class | Class 150 (150 lbs) |
| Configuration | Reducing Male x Female |
BSP Thread Dimension Guide
BSP thread sizes are nominal and do not represent the actual physical diameter of the thread. The table below provides standard BSP thread major diameters in millimetres to assist with identifying the correct fitting size.
| BSP Thread Size | Major Diameter (mm) |
|---|---|
| 1/8" | 9.7 |
| 1/4" | 13.2 |
| 3/8" | 16.7 |
| 1/2" | 21.0 |
| 3/4" | 26.4 |
| 1" | 33.2 |
| 1 1/4" | 41.9 |
| 1 1/2" | 47.8 |
| 2" | 59.6 |
| 2 1/2" | 75.2 |
| 3" | 87.9 |
| 4" | 113.0 |
Important: The dimensions shown are standard BSP thread reference diameters. BSPT male threads are tapered, meaning the measured diameter varies along the thread. For female BSPP threads, the dimensions correspond to the major diameter of the matching male thread rather than the internal bore of the fitting.
Installation Information
The male BSPT external thread is tapered and should be installed using a suitable thread sealant or PTFE tape. The female BSPP internal thread is parallel and requires a compatible male connection with an appropriate sealing arrangement.
Ensure all threads are clean, correctly aligned and compatible before installation. Avoid overtightening, which may damage the threads or connected fittings.
Please Note: Class 150 is a fitting pressure classification and does not mean a fixed maximum working pressure of 150 PSI. Actual working pressure depends on the fitting specification, operating temperature and application. Always confirm the manufacturer's pressure rating before installation.
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