The only difference between the two thread forms is that the A form has a slightly tighter thread tolerance than the B form. S. and Canada also use parallel threads like the NPSM (National Pipe Straight Mechanical) connector.

Not knowing the exact application and set-up it is almost impossible for us to diagnose the issue from a distance. Just to confuse things further, often the T in BSPT refers to Thread and doesn't indicate either Taper or Parallel. It is useful to know their differences – and also how to recognize which type is in use – without having to remove the entire assembly. Pressure connections which include the suffix EN 837 or DIN 16288 are sealed on the end of the thread with a small diameter O ring which is placed around the post protruding from the end of the thread.No need to use a hex key for installation, just tighten it to the external thread, and install it directly on the top of the isolation valve. The screw connection is ideal for use on spraying and irrigation systems in, for example, residential complexes or sports fields. 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. Inch BSP - Bathroom basin taps and kitchen sink taps, radiator connections, shower hoses, old outside tap outlets, toilet cistern fill / float valves. They are often referred to as metric connections because they are used in the metric system and the dimensions are based on metric measurements.

In the female mating part of the pressure connection there is a hole with sufficient diameter to locate the male end post without pinching the O ring. Taper threads, British Standard Pipe Taper thread ( BSPT), whose diameter increases or decreases along the length of the thread; denoted by the letter R.G Thread is Parallel (straight) threads (BSPP - British Standard Pipe Parallel), which have a constant diameter. To assist you with any product related question we created a request form which enables you to contact us in the most convenient way. Prefixing with G, is equivalent to adding BSP after the pipe size, although BSPP is more strictly correct to define the parallel version. To avoid the problem of awkward gauge positioning, use a “crush washer” and hand-tighten the connection. 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).

The pressure experts at WIKA USA understand national and international measurement standards, pressure gauges, and which ones are best suited for your industrial processes. The terminology for the use of G and R originated from Germany ( G for gas, as it was originally designed for use on gas pipes; R for rohr, meaning pipe. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Male (external) NPT connections are somewhat conical, with the diameter of the threads decreasing slightly from socket to tip. Compared with other same products in the market, this shower hose joint has thicker interface, explosion-proof and pressure-resistant, more durable, suitable for Grohe tap, ballfix valve, the adapter can be applied for 13mm EU taps and 15mm UK faucet, and with the rubber washer make more sealed and leak-proof.If accuracy is critical, base your final decisions on the data provided in the root document: ISO 228; which is a copyrighted document. Once the connector bottoms out to make the seal, the positioning of the instrument cannot be changed. Jointing threads These are pipe threads where pressure-tightness is made through the mating of two threads together. BSP Male DIN16288 and G1/4 Male EN837 are a couple of examples of how this style of connection is described.