Pressure Reducing Valves (PRV)

Caleffi PRV

I have previously talked about Noises in Pipes and Dealing with Water Hammer, but neglected to mention PRV’s.

Frequently people think high water pressure to be a good. In fact it can be a big problem. Too much water pressure in a domestic system can:

Result in toilet systems leaking, Put extra stress on plumbing [read more...]

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Missed The Bath – Fail

tap fail Herman

But when was this stuffed up?

When the bath was selected When the tapware was selected? When the bath was installed? When the tapware was installed?

It does show how carefully you need to thick about things at Selection/Pre-Start.

Thanks again to Herman Fong for submitting this photo. (If you see something [read more...]

Bathroom Fashion 2

bathrooms 2

There are a lot of expensive bathroom fittings on the home shows and showrooms, but are they practical?

I saw this wash basin the other day. . . . . .But how do you clean under and behind it?

Perhaps all the people who design these fittings employ cleaners so they don’t care about [read more...]

Plumbing Acronyms

There are a lot of acronyms used on plumbing drawings so here are a few definitions:

AG – Agricultural (Drains)

B – Basin

Bth – Bath

BT – Boundary Trap

DP – Down Pipe

FW – Floor Waste

HWS – Hot [read more...]

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Is Grey Water Re-Use Worthwhile?

greywater

What is Grey Water?

Grey Water includes all the waste water from the house with the exception of toilet waste. (Black Water)

It can includes water from; Washing Machine, Dishwasher, Sink, Wash Basin, and Shower.

A basic grey water reuse scheme sending washing machine water using a two way diverter valve to a perforated [read more...]

Overflow Relief Gulley

ORG

Have you ever wondered what this is in your garden?

Perhaps you have seen ‘ORG’ on a drawing.

Well the answer is it’s called an Overflow Relief Gully. It needs to between the house and the connection to the main sewer.

An ORG is a vital part of protecting your house against Sewage blockages [read more...]

Rattling or Thumping Pipes – Cures

These cures relate to general rattling or banging when you turn the tap on.

The various reasons for these noises, and their cures are:

Air in Pipes Typically occurs in new systems, or after some plumbing alterations. You need to purge the air from the system. To do this

Start at the lowest tap or [read more...]

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Rainwater – Pump Size

DIGITAL CAMERA

One of the reasons why most rainwater systems use too much power is because because the pump is too big. For other reasons see Rainwater – Pump Issues

Most pump suppliers and design charts will specify a larger pump than you really need (They sell a more expensive pump, It’s less likely that the pump [read more...]