Kitchen Sink Stainless Steel Grade 304 18/8

Stainless steel grades used for kitchen sinks explained
OK so you want to buy a kitchen sink and all the sinks have these numbers but what do the numbers mean? Could they mean the weight in kgs that you can pile the dishes up before washing them divide by the maximum number days you can leave dirty dishes…. are you also confused? Never fear, here is a very simple explanation.

There are many grades of stainless steel but since we are takling about kitchen sinks here we will deal just with 18/8 and 18/10 which are the two most common grades of stainless steel used for food preparation and dining. They are also known as Type 304 or grade 304 and are part of the 300 series. 18 refers to the amount of chromium present and the 8 or 10 represents the amount of nickel. For example, 18/8 stainless steel is comprised of 18% chromium and 8% nickel.

304 grade stainless steel is also comprised of no more than 0.8% carbon and at least 50% iron. The chromium binds oxygen to the surface of the product to protect the iron from rust. Nickel also enhances the corrosion resistance of stainless steel.  Therefore, the higher the nickel content, the more resistant the stainless steel is to corrosion.


Whats That Filter Thing In A Tap Spout?

Bathroom and kitchen tap aerator diffuser

In the spout opening of many taps there is a filter thing. It is not actually a filter at all but this is what it gets called a lot of the time.

So, what is it Supposed to be called?

and what is it for?

Call it an aerator or diffuser and you will be on the right track. I have heard it referred to as a filter and gauze sieve but these are not correct.

This clever piece of technology changes the way water exits a tap spout. The Aerator is either wire mesh or plastic grate and is screwed to the tap spout end, often with a chrome collar (the pics above show the aerators inside chrome collars). The water is agitated in the aerator and mixed with air that enters through tily channels in the side so when it comes out of the spout it feels luxuriously soft and bubbly.

Aerated water is gentle and pampers your hands.

Aerators also act to direct the water flow straight out of the tap spout and minimise splashing.

The aerator also restricts the water flow along with adding air to the water so it is also a water saving device.

Aerators are common on kitchen taps and basin taps where the spout shape allows. Square and waterfall spouts often dont have. You can easily see the aerator in tap pics, it either protrudes from the spout or you can see the screw collar line on the spout end.

They are not so common on bath taps as the restriction will slow down filling the bath tub and you dont usually wash your face or hands direct from the bath tap spout.

Aerators often get clogged by debris, especially in new installations or after pipework repairs or maintenance. This gives the impression that the pipes are blocked and often leads to major investigation and costly plumbers bills when all that is needed is to unscrew the aerator and rinse it clean.

Taps that usually have aerators:

Taps that often dont have aerators:

Understand Your Water Pressure

Water Pressure Made Simple

Know your water pressure

When we turn on the kitchen tap or run a bath we may not be thinking how the water is coming out, unless it is dripping or not coming out at all! But, water pressure is something that we should all be familiar with.

Most households receive water from a municipal water system where the water is usually extracted from groundwater sources and then treated for human consumption. Then it is pumped to water towers and from there gravity takes over to provide the pressure that forces the water through pipes and into our homes.

The pressure of water in each home will vary according to their elevation to the water source, as well as with the system that is delivering the water in. A plumbing company website says, “A cubic foot of water weighs 62.4 lb. and exerts .4333 lbs of pressure per square inch on the bottom of its container at a depth of one foot. Therefore, the discharge pressure of a water storage tower 100 ft. tall will be 43.33 psi. If your house is in a valley 50 ft. below the bottom of the tower, the theoretical water pressure at your house will be approximately 65 psi, reduced by the friction in the pipes.”
Click here for a handy pressure conversion tool:

Typical residential water systems are designed to function under a pressure of 40-70 psi. If the water pressure exceeds 100 psi a pressure regulator may need to be installed in the line to reduce the pressure to an acceptable range. This protects the equipment in your home from damage caused by excess force exerted by the water. The opposite can occur too, if pressure is below 40 psi a pressure-booster could be needed to bring it up to acceptable levels. Note also that hard water can reduce pressure.

It is also important to note that water flow is not the same thing as water pressure. Water flow is the result of your water pressure on the amount of water available for delivery (volume). Low water flow could be a result of an obstruction on the water line. An old pipe can contain mineral build-up or corrosion that reduces the pipe’s internal diameter. So if a water pressure gauge is reading at an acceptable level but the pressure seems off, it may be a flow problem.

If you are unsure of the water pressure at your home you can easily test it with a simple water pressure gauge available from your local plumbing merchant, or you can ask your plumber/DIY friend to check it

The term “High pressure” when used to describe residential home water supply generally means a minimum of 1.0 bar water pressure. This can be achieved by using one of the following systems:
– Combination boiler systems
– Gravity fed systems (only with a pump)
– Megaflow system
– Pumped hot water systems
– Un-vented hot water systems
– Standard pressurized hot water cylinder type systems

Need some help working out what kind of water pressure system you have? Try answering these questions:
Do you have a cold water tank in your loft feeding your hot water cylinder?

Yes = You probably have a low pressure water system which means you should choose from our selection of low pressure taps

No = Do you have a hot water cylinder elsewhere?

Yes = You probably have a low pressure water system which means you should choose from our selection of low pressure taps

No = You probably have a high pressure system which means you can choose from any of our bathroom and kitchen taps and mixers