In 1991 I transferred to Lawrenceville (USA) and since 2006 I have been product manager for mechanical pressure and temperature instrumentation and accessories. The pressure experts at WIKA USA understand national and international measurement standards, pressure gauges, and which ones are best suited for your industrial processes.

Inch BSP - Outlet thread on 3/4 inch outside tap (we have a 7/8 inch BSP brass garden hose tap connector). Other options = Units with special voltages and/or 60 Hz possible, Higher operating pressures and greater volume flows on request, Water cooled condensers available (larger models only). Parallel (straight) threads, British Standard Pipe Parallel thread ( BSPP; originally also known as [1] British Standard Pipe Fitting thread/ BSPF and British Standard Pipe Mechanical thread/ BSPM), which have a constant diameter; denoted by the letter G. Once the connector bottoms out to make the seal, the positioning of the instrument cannot be changed.Tightening, though, has to be done with care: Too much compression can lead to galling, and over-tightening can damage the threads. One way to find out is to remove it from the installation and look at its threads, but this will result in downtime if the process is active.

The size number was originally based on the inner diameter (measured in inches) of a steel tube for which the thread was intended, but contemporary pipes tend to use thinner walls to save material, and thus have an inner diameter larger than this nominal size. I have a pressure sensor for use on air with a G1/4 female process connection and would like to convert it so it can accept 6mm OD tubing.It's also silicone-free, so you can use it in no-contamination manufacturing units like soldering, special packaging or coating facilities. If the pressure is not going to exceed 16 bar we would suggest a John Guest PM010612E 6MM x 1/4″ straight threaded to tube adapter fitting. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. Often the 2nd P is left off because BSPT tapered threads are less common and BSP is assumed to be parallel unless otherwise specified.