Push-Fit Waste Quantities: Fitting Lists, Sizes and Colours

A well-prepared waste-fittings order is more than a count of elbows. It identifies the system, size, shape, colour and purpose of every component, together with the supports and closures the layout requires. This guide turns an agreed pipe route into a practical buying list for our push-fit waste collection, with examples of how to check quantities and variants without confusing a catalogue range with the exact items needed on site.

Begin with an agreed layout

Ask the installer to confirm the route before you count parts. Mark the fixture connection, downstream connection and each planned change of direction or size. Include branches and supports, and note any boundary where a different system or material needs a specified transition. A provisional sketch can be useful for discussion, but label it as provisional so someone does not treat an early idea as the final shopping list.

Give the drawing a date or revision number if the project is changing. This is especially useful when a cabinet, basin or appliance has been replaced during planning. Keep the parts list attached to the corresponding layout. Otherwise, it is easy to order a mixture of components from two versions: the bends from the original route and the supports from the revised one, with neither arrangement complete.

Count components by function

List straight joints, bends, branches, size transitions, supports and closures separately. A FloPlast push-fit waste coupling joins compatible sections, while a FloPlast push-fit waste tee introduces a branch. Count the physical fittings shown on the approved layout, not the number of visible pipe ends in a photograph. One tee has several connections but remains one component on the purchase list.

This method also reveals omissions. If the sketch shows a size change but the list contains only couplings, the intended transition has not been captured. If it shows a long unsupported run, the support arrangement may need review. Counting is therefore a useful final design check, provided it is done with the installer rather than used to invent a layout from whatever parts happen to be inexpensive.

Record both sizes for every reducer

The FloPlast push-fit waste reducer is currently listed in 40x32mm, 50x32mm and 50x40mm combinations. Write the complete pair on the order. A note saying “one 40mm reducer” leaves the second size uncertain and may lead to the wrong variant being selected. Check that the transition appears in the agreed system design and is not merely an attempt to connect unidentified old pipework.

Separate different reducer combinations into different lines even if their quantities are small. This makes the basket and delivery easier to review. For example, one 40x32mm reducer and one 50x40mm reducer are not interchangeable spares. A single line saying “two reducers” hides the most important information. The same principle applies wherever a product offers a combination of dimensions rather than one nominal size.

Keep bend descriptions complete

The range includes a 90 degree knuckle, a 92.5 degree waste bend, a 135 degree obtuse bend and a 90 degree conversion bend. Preserve the full description from the agreed component list. Similar angles or product photographs do not make the fittings identical in geometry or connection arrangement. If a contractor uses a shorthand name, confirm which catalogue item they mean before adding quantities.

Where the manufacturer gives paired angle descriptions, use the exact product identity to avoid double counting. The obtuse bend may be described as 135° (45°), for example. Do not list both as separate requirements unless the drawing genuinely calls for two fittings. A product link beside each list entry is useful because it lets the installer confirm the intended shape before the order is placed.

Check the current size and colour combinations

Many of the current 32mm and 40mm fittings are offered in white, black and grey, while the listed 50mm options are grey. However, availability varies by component. The current 92.5 degree bend and conversion bend listings show 32mm and 40mm variants. Do not assume every size in the manufacturer's wider range is selectable on every JJ Building Materials product page at the moment you order.

The push-fit waste tank connector illustrates another variation: the current 32mm options are white and black, while the 40mm options include white, black and grey. Check each dropdown rather than copying a colour assumption across the entire list. If a preferred combination is not shown, confirm availability or an acceptable alternative with the installer instead of quietly changing the size to obtain the desired colour.

Count supports from the support plan

Push-fit waste pipe clips need their own quantity calculation. The number is not simply one clip per fitting or one clip per pipe length purchased. Ask the installer to specify support positions using the current system guidance, taking account of pipe size, orientation and the arrangement of joints. Then count the clips on that plan and match their nominal sizes to the pipe they support.

Also identify suitable fixings for the actual background. A clip quantity alone does not establish what will secure it to masonry, timber or another surface. Keep those ancillary requirements on the installation list even where they are purchased separately. This prevents the common situation in which every waste fitting arrives correctly but work pauses because the support fixings were assumed to be included or already available.

Use a simple worked counting example

Imagine an approved layout calls for two straight couplings, three specified bends, one tee and six clips. The starting fitting count is twelve items, but the purchase list still needs separate lines for each type and variant. If the three bends are not all the same shape, split them further. This is a counting example only; it does not propose a drainage layout or establish the support quantity for a real installation.

Now imagine that two of the clips serve one pipe size and four serve another. A single basket line for six clips would be wrong even though the total count matches. The detail matters as much as the arithmetic. Review both the overall total and the individual specifications, and use a checklist that lets the installer confirm each line rather than merely approve one final number.

Separate planned spares from required parts

A small, deliberate spare allowance may be useful where the installer recommends it, but keep it separate from the components required by the layout. Label a spare as a spare and explain which part it duplicates. Otherwise, an extra fitting can be mistaken for a missing branch or route change when someone else reviews the order. Clear labels reduce confusion during both purchasing and assembly.

Do not buy a random selection of bends to compensate for an unresolved route. That can increase cost without producing the correct component when it is needed. Resolve the layout first, then decide whether an extra item is justified by the practical circumstances. Also check the seller's current returns conditions directly if they affect the purchase; do not assume unused surplus can always be returned without restrictions.

Review the basket before payment

Match the basket against the list line by line. Check the full product name, selected size, colour and quantity. Where a page displays one photograph for several variants, trust the selected option description rather than the image alone. Record any agreed substitutions on the list so the delivery is not later judged against an outdated version. Keep the order reference with the project information.

If someone else is placing the order, send the complete list and product links together. A message containing only quantities can lose the context that made the selection correct. For a larger project, group items by room or phase while keeping identical products easy to total. This helps separate deliveries or work teams without hiding the overall quantity being purchased.

Check and sort the delivery

Inspect the delivered parts before installation is due to begin. Compare sizes and colours with the order, check that components are identifiable and note any damage or missing items. Keep the packaging or labels long enough to resolve questions. Sort the fittings by the agreed work area or route so a part intended for another room is not used simply because it is the nearest available item.

Hand the checked list to the installer with the materials. If the route changes on site, update the count before ordering more. Photograph or note the final arrangement for future maintenance. A well-organised initial list then becomes a useful record of what was actually used, rather than a document that stops being accurate as soon as the first unforeseen obstacle is discovered.

Frequently asked questions

Should I count pipe ends or fittings?

Count the actual components required by the approved layout. A tee has several connections but is one fitting, while a size change may require a separate specified component. Use pipe ends as a cross-check for the route, not as a substitute for identifying the fitting types and quantities on the order.

Are all sizes available in every colour?

No. Check the current variants for each product. The catalogue shows many 32mm and 40mm options in white, black and grey, with listed 50mm options generally in grey, but individual products differ. Do not change a required size simply to obtain a preferred colour without reviewing the specification.

How should I write a reducer on the list?

Include both nominal sizes, the system, colour and quantity. For example, a 40x32mm component should not be shortened to an ambiguous reference to a 40mm reducer. Link the exact product and selected variant where possible so the installer and purchaser can verify that they are discussing the same item.

How many spare fittings should I order?

There is no universal allowance. Ask the installer whether particular spares are useful for the job and identify them separately from the required components. Buying assorted fittings without a settled route is unlikely to be efficient. A clear specification usually reduces uncertainty more effectively than a large speculative basket.

Do pipe clips come with the connection fittings?

Do not assume they do. Treat supports and their suitable fixings as separate items unless the product explicitly states otherwise. Confirm the support arrangement and quantities with the installer, then check the selected clip sizes. A complete connection-fitting order can still leave the support requirements entirely unfilled.

What should I do if the layout changes after ordering?

Compare the revised drawing with the original list and identify the exact differences. Check which delivered components remain suitable and which additional variants are required. Update the list before placing a supplementary order. This avoids buying the same item twice or overlooking a change in size, shape or colour.