
The Holman 100 x 50mm PVC DWV Taper Level Invert reduces a drainage or vent line from 100mm to 50mm while keeping the base of the pipe level, so flow runs smoothly through the size change. It is underground rated for in-ground runs.
Use it on sewer and vent work where a 100mm line needs to step down to 50mm with the invert kept level for good drainage. Solvent-cement the joints for a secure connection above or below ground.
The Holman 100 x 50mm PVC DWV Taper Level Invert is designed for sewer and vent applications, reducing a pipe run from 100mm to 50mm while keeping the invert level. The grey PVC fitting joins with solvent cement and is suitable for underground use.
Solvent-cement the fitting to the pipe for a secure connection.
It reduces the pipe from one size to another while keeping the base (invert) level so flow runs smoothly.
It reduces between 100mm and 50mm.
Yes, it is underground rated.
It is solvent-cemented to the pipe.
Poly Vinyl Chloride (PVC), in grey.
Satisfied customer
Had been looking at the Holman 100 for a couple of months. Holman build quality is obvious as soon as you open the box — feels solid and well finished. Easy to set up and works exactly as described. Delivery to Perth in only 3 days which is impressive. Will be buying more from SuperSaver AU for sure.
Exceptional — 5 stars
Really happy with this. Price was the best I found online and delivery was faster than expected. Product is well made and does exactly what it should. Zero complaints — will buy from SuperSaver AU again.
Absolutely love it!
Had the Holman 100 on my wishlist for a few weeks and finally pulled the trigger. Arrived in 2 days which was a nice surprise. Build quality is solid and exactly what the photos showed. My partner uses it every day now and has already asked me to grab another one as a gift.
Best buy of the year
Ordered Thursday and had it by Saturday. Packaging was really good — nothing moved around. Works exactly as expected and the price was well below what I saw in stores.
Fast delivery — impressed
Love my Holman 100. Does the job perfectly and the price was unbeatable.
Exactly as described
Always buy Holman when I can — consistent quality and you know what you are getting. This one is no different. Fast dispatch and arrived in perfect condition.

