Description
PVC Equal Socket – PVC-U BSP Threaded Fitting
Our PVC Equal Socket is a corrosion-resistant PVC-U threaded pipe fitting for water distribution, agricultural irrigation, swimming pools, water treatment and compatible industrial fluid systems. Connect two male BSP threaded components of the same nominal size.
Designed for straightforward assembly with compatible threaded components, this female BSPP equal socket offers a lightweight alternative to metal fittings. Confirm fluid compatibility and the specific fitting rating for your application.
Key Features & Benefits
- Material: Rigid PVC-U (unplasticised polyvinyl chloride)
- Connection: Female BSPP x Female BSPP, equal sizes
- Applications: Irrigation, water transfer, pool systems and suitable industrial pipework
- Benefits: Corrosion-resistant, lightweight and easy to maintain
- Installation: Compatible BSP threaded connections; do not overtighten plastic threads
Technical Specifications
| Specification | Details |
|---|---|
| Fitting | PVC Equal Socket |
| Material | PVC-U |
| Connection type | Female BSPP x Female BSPP, equal sizes |
| Sizing | Nominal BSP thread size (select variant) |
BSP Thread Sizes – Male Thread Outside Diameter
BSP sizes are nominal: a 1" BSP thread does not measure 25.4 mm across the outside. To identify the thread size, measure across the widest outside edges of the male thread using a vernier caliper, then compare your measurement with the table below. These dimensions are for identifying BSP threads, not the outside diameter of PVC pipe.
| Nominal BSP Size | Male Thread OD (Approx.) |
|---|---|
| 1/2" | 21.0 mm |
| 3/4" | 26.4 mm |
| 1" | 33.2 mm |
| 1 1/4" | 41.9 mm |
| 1 1/2" | 47.8 mm |
| 2" | 59.6 mm |
| 2 1/2" | 75.2 mm |
| 3" | 87.9 mm |
| 4" | 113.0 mm |
How to measure: (1) Measure the outside diameter across the male thread crests. (2) Find the nearest value in the table. (3) Check whether your fitting needs a male or female connection and whether the thread is parallel (BSPP) or tapered (BSPT). A female thread's internal measurement is different from the male OD shown here.
Applications & Installation Advice
Connect two male BSP threaded components of the same nominal size. Match both the nominal BSP size and the male/female thread configuration before ordering. Use a suitable sealing method for the actual thread form and mating components. Avoid excessive PTFE tape or force, which can split plastic fittings. Pressure capability reduces as temperature increases; verify the manufacturer's pressure-temperature rating before use. PVC-U systems should not be used above 60°C.
Not Sure What BSP Thread Size You Need?
Our T-mex Express Tech Hub explains how to measure threaded PVC fittings, identify nominal BSP sizes and choose the correct male or female connection.
Read Our PVC Thread Size Guide →© All text and product images are the intellectual property and copyright of T-mex Express



