Thread reducers and adaptors are essential components in plumbing and piping systems as they allow for seamless transitions between different pipe thread sizes or types.

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General purpose fittings with parallel male threads will generally have flanges to accommodate a sealing washer that can be compressed the effect a seal when the fitting is screwed fully home. An example of this is the 3/8" Female x Male BSP x NPT Connector Thread Adaptor UK Thread to American, which provides a seamless transition between these two thread types.

Tightening the joint firmly causes the taper to slightly expand the parallel female thread to conform with the male thread, and when jointing compound is used, this produces an efficient seal. Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item. Please contact your local branch prior to purchase, so that we can ensure the product is available to you. For those who require adaptors that can bridge the gap between British Standard Pipe (BSP) and National Pipe Thread (NPT) connections, we also offer BSP to NPT thread adaptors.

I now need to do a final assembly but have read conflicting advice on the best practice for sealing the mating surfaces. The size of push fit waste fittings is based on the nominal inside bore of the pipe they are used with.

The table below shows the minimum quantities required to benefit from this discount offer, and how much they'll cost.

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They help us to identify popular products and understand your browsing habits so we can display relevant adverts to you. With a smear of compound applied to the inside of the female thread and a smear applied to the end of the male thread , you can be sure that compound will be present over the entire surfaces of the mated threads of the two parts. We aim to dispatch all carrier delivered items within 48hrs, and all items delivered on our own transport within 5 days, Monday to Friday.This particular product is perfect for situations where you need to downsize your pipe connection without compromising on quality or durability. For any deliveries to the Scottish Highlands or other off shore locations please contact us for a full quotation. It doesn't specify the thread but looking at it now it looks parallel but as its half eleven I am not going to get a fitting to screw into it tonight. Once I started using these products I have never gone back to PTFE tape as I find the liquid sealants to be very reliable and effective.