Adapters are available at hydraulic stores, McMaster Carr and anyplace that sells flat panel radiators. The threaded part(s) of plumbing fittings are usually made to a British Standard Pipe Thread size (BSP).

Hygienic or Sanitary Tri-Clamp fittings are used by industries that manufacture products which must be protected from contamination such as food, beverage, pharmaceuticals or biotechnology. The sealing technique for both types is fundamentally different, NPT relies on the gradual compression of the flanks of the internal and external thread to directly form a seal on the thread, whereas a G1/4 provides the mechanism for compressing a seal typically between two flat surfaces at one end of the male thread. Adapt G1/4 (1/4BSP) female to accept 6mm OD tubing International Standards Organization Specification 228/1, straight threads, reference specification: BSPP, DIN 259, JIS B0202. Inch BSP - Central heating oil line connectors, some European toilet cistern fill valves (not common in UK).

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I've only noticed BSPT to NPT in hydraulic catalogs. It is used in the UK for general plumbing work, too. The size was originally based on the inside diameter, measured in inches, of a steel pipe for which the thread was intended. This is the source of the confusion, as people incorrectly think the size refers to the outside diameter of the male thread.

BSP is a technical standard called "British Standard Pipe". It covers two distinctly different threads: BSPP is the standard for hydronic radiators in the UK, Europe & Asia. Most of the flat panel ones & towel warmers sold in BSPP (G) kinda-sorta fits 1/2" NPT, but eventually they'll leak. The pitch is too loose of a fit. The diameters are A 1/4 BSP (G1/4) thread has a 13.157mm outside diameter and a 1/2 BSP (G1/2) thread has a 20.955mm outside diameter. 0.25-18 NPT thread explanationDIN3852-A is used with a bonded seal (also known as a Dowty seal) which is a steel washer that has an elastomer ring bonded to the inside diameter of the washer. Some pressure connections also include a tapered shank which assists in the correct alignment of the bonded seal. If there is no tapering it is advisable to use self-centering bonded seals to avoid a poor alignment of the seal which may compromise pressure tightness. Where can we source a pressure DP transmitter flanged with a flush diaphragm for liquid level measurement with an output over 0-200 inH2O? At least 41 thread sizes have been defined, ranging from 1⁄ 16 to 18, although of these only 15 are included in ISO 7 and 24 in ISO 228. [3] [4] [5] [6] 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. In the modern standard metric version, it is simply a size number, where listed diameter size is the major outer diameter of the external thread. For a taper thread, it is the diameter at the "gauge length" (plus/minus one thread pitch) from the small end of the thread. The taper is 1:16, meaning that for each 16 units of measurement increase in the distance from the end, the diameter increases by 1 unit of measurement.

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. Would you have some kind of adapter that could do this? I know this thread is very old, but I'm adding just in case someone stumbles upon it looking for information. Hopefully it will clear up a little confusion & helps someone someday: Inch BSP - Outlet thread on 3/4 inch outside tap (we have a 7/8 inch BSP brass garden hose connector). external) & 3B (internal): for applications where closeness of fit and/or accuracy of thread elements are important.I would like to know if a 1/2 inch NPT instrument connection would fit into a 1/2 inch BSP sample port or could we use a G 1/2 B connection instead? Parallel (straight) threads, British Standard Pipe Parallel thread (BSPP). These are sometimes denoted by the letter G, for example G 1/2" means a parallel 1/2 inch BSP thread. What is the difference between the numerous G 1/4″ threads? And are they compatible among one another? One of my colleagues also often has troubles and gets confused because of all the various G 1/4″ threads which the market has to offer, or which are requested by the customer. There are no criteria to judge which Thread Process Connections mentioned above is better. Actually, each of them appears at a proper time with a proper reason. When it comes to choose a process connection, what really matters is the pipe fitting your pressure transducer is to be used. It is true that different country has its own standards and it is also a fact that any thread standard is available worldwide. 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.

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. The threads are rounded equally at crests and roots by circular arcs ending tangentially with the flanks where r ≈ 0.1373 P There are two distinct styles of seal typically used for pressure instrumentation with a BSP thread fitting. Taper threads, British Standard Pipe Taper thread (BSPT). These are sometimes denoted by the letter R, for example R 1/2" means a taper 1/2 inch BSP thread. But how about when the pressure gauge is already inserted into the process? Is there an easy way to tell which connector type an instrument has without removing it? Yes. Because a G connection bottoms out, no threads are visible. In an NPT connection, a few threads or exposed PTFE tape can be seen.There are subtle variations in DIN3852 pressure fittings available, but the following are the most common examples: The different sizes of Triclamp fittings are defined by two separate parameters, one is the sealing face flange diameter and the other is the diameter of pipe that the flange is intended to be used with: Tri-Clamp Size The specified values for the maximum pressure are rounded values and are assigned to the nearest standard scale range. The ISO metric screw threads are the world-wide most commonly used type of general-purpose screw thread. They were one of the first international standards agreed when the International Organization for Standardization was set up in 1947.