17mm spanner
Screw a proper size end cap from your local hardware store onto the pipe and use thread sealer. Go to your local hardware store and purchase a cap that fits that size line. Use a sealant on the threads.
Pipe bore is the actual minimum inside diameter of a pipe, which is not necessarily the nominal pipe size.
Stepping down the size of a pipe on irrigation can certainly bring up the pressure. Generally, the larger the pipe, the lower the pressure. It is best to use at least a 3/4" pipe in size in terms of irrigation.
Nominal bore which is designation for pipe size.
17mm spanner
any kind of standard size compression or clamp
How to calculate spanner size regarding bolts and nuts
The "SW" on spanners, or wrenches, stands for "Socket Width" or "Spanner Width," indicating the size of the opening that fits over a nut or bolt. It is often used in reference to the width across the flats of the fastener it is designed to engage. This measurement is crucial for ensuring that the spanner fits properly and can apply the necessary torque without slipping.
The effective diameter of the bolt defines the size of the bolt head. Hence the size of the spanner or wrench that fits the bolt. There are certain exceptions but these are usually specialist applications.
Its a 13mm spanner that you require.
A spanner is another word for box-end wrench. So, a 14 spanner would be a metric size 14 box-end wrench.
The appropriate tool size needed for tightening a bolt with a 17mm spanner is a 17mm wrench or socket.
1.5d+ 1 or 2, where d is the bolt size
what size spanner
its 8mm square
compression ratio=uncompressed image size/compressed size