Trench Drain Systems gets a lot of questions about the 5 inch NDS Pro-Series product line. Our expert, John, went over some standard product features to help you know a bit more about the drains.
NDS designed the channels to join together without couplers. They fit together tongue-and-groove.
That’s already an improvement. Most residential drains need an extra part to fit together, and eliminating that saves a lot of hassle.
But each channel also has these anchoring ribs every 4 inches that really grab the concrete. If you need a smaller piece of drain, just cut at any of these points to get a smaller channel that still interlocks.
Pro Series outlets connect directly, whether it’s this bottom outlet or an end outlet. Everything attaches to 3” S&D and 4 inch S&D fitting SPT.
The shallow version – yes there’s a shallow option – only has an inch and a half outlet for Sch. 40 pipe. There’s no built-in bottom outlet, but the shallow profile DOES have a nifty extension for 3 inch S&D bottom outlets and inch and a half side outlets.
Now. If you choose the Deep or Shallow profile … either way, they connect the same, and they take the same grates.
And those grates have a lot of variety.
5″ Pro Series has a gray perforated grate perfect for pedestrians. With these small openings, you get a trade-off: It doesn’t handle much water but it is ADA compliant and heel-friendly.
This light traffic grate handles almost three times as much water as the perforated grate. It’s also more robust, so you can drive across it. This one’s the most popular option because it comes in 6 colors and is still ADA Compliant.
These two grates are commercial-grade. Both are H-20 load rated, so start thinking tractor-trailers and forklifts.
In 2012, NDS rolled out an improved channel for the 5 inch Pro Series. The 5 inch Pro Series is the workhorse of the Pro Series line, which ranges from 3” – 12” wide. The 5 inch Pro Series is sold in hardware stores around the country, though only in kit form. If you want to buy special grates or additional components, you’ll need to find an online store.
The first striking difference between the new and old design is the rebar attachment feature. (See below.) In the original rebar attachment design, a hole in the channel’s supporting foot allowed the installer to thread a piece of construction wire to connect rebar. The new rebar attachment design features a plastic clip that affixes to a No. 4 rebar (1/2”) without a tie wire.
The new 5 inch Pro Series model also sports a new rib design. The ribbing was originally designed into the system to define the location where the channel could be cut during final channel length adjustment. Compared above, one can see how one of the ribs in each pair has been extended. The extended rib has three purposes.
It acts as a guide to assist in manual trimming of the channel,
It gives more rigidity to the channel body, and
It is part of a new, snap-fit tongue-and-groove channel connection design.
There is a fourth purpose of the rib re-design, shown above. Three of the extended ribs have pedestal extensions, which are great for leveling the channel during installation on a tamped gravel surface. In the previous 5 inch Pro-Series design, the bottom outlet prevented the channel from setting level on a flat surface. The new design eliminates this issue to improve the overall installation experience.
Improved Channel Connection
Probably the best outcome of the 5 inch Pro Series redesign is the new channel connection snap fit. Above, one can see both designs are still a tongue and groove fitting. The big difference is in the small “snap housing” at the top of the new design (left channel). Upon completion of the tongue and groove connection, a tab on the male end of the channel makes a “snap fit” with this housing and secures the assembly.
With the previous design, PVC glue was used to secure the channel connection. Though, PVC glue would make the joint between the two channels water tight, it’ application was sometimes an afterthought and made for a more complicated installation.
Different Plastic Composition
You may have noticed a slight color difference between the two channels in comparisons above. That’s because NDS altered the plastic composition of the channels. The early version was made of a Poly Vinyl Chloride (PVC) composition while the new channel is made from Poly Ester (PE). The grates used in the system have not changed. They are still as reliable as they were in the past.
There are property differences between the two plastics. However, these differences may be more significant to the manufacturer than the customer. Two helpful observations I’ve made between the two plastics:
You can’t use PVC Glue to connect your new 5 inch Pro Series channels. It doesn’t work. You’ll have to find another product other than “good ol’” PVC glue. I initially learned of the new channel design from an irate customer complaining that he couldn’t glue these new channels together. At that point, NDS still had an old installation data sheet circulating. Oops!!
If you freeze and drop PVC components, they will crack. I learned this after receiving a January shipment of NDS PVC catch basins. The product arrived in the box shattered due to poor handling by the trucking company. If it was July, they probably wouldn’t have been broken.
The final difference between the two 5 inch Pro Series designs is the channel weight. The new channel weighs 15 percent less than the previous channel. This may be due to the actual density of the plastic itself. Or, it could be related to some reduced channel dimensions. My gut feeling is that the weight change is an inherent property of the plastic rather than reducing the amount of plastic in the design. In fact, with the added features of the new design, it seems that NDS has “beefed up” on the volume of this channel. Again, this is my gut feeling and not based on any technical evidence.
NDS’s design change to the 5 inch Pro-Series hasn’t changed the width or length, but new design features make installation easier. Some installation problems may crop up if one is trying to make a construction blending the two designs.
I’ll miss the old design because we spent so many years together. However, I look forward to working with this new channel. Good job NDS, Inc.!!!
NDS offers a line of channel drain systems called the “Pro Series”. These channels are injected, molded from polyvinyl chloride, and have a neutral slope (no slope). They come in a variety of widths (3”, 5”, 8” and 12”). According to NDS literature asterisk notes, this product is technology licensed from the Italian trench drain manufacturer First Corp.
This product line really has many options if you don’t want pre-sloped channels. From a manufacturing point of view, it makes sense. NDS production facilities would need to stock a bunch of injection mold dies of varying depth in order to make pre-sloped channel systems Injection mold dies are expensive!
With the Pro Series, NDS instead opted to make four channel widths to account for different flow situations. Three of the widest products have two depths (shallow and deep channels). So, in effect, there are seven different channel options in the Pro Series.
The photo above shows three of the four width options (I didn’t show the 12” wide option). The 3” and 5” wide channels come in 40 inch lengths (1 meter). The 8” and 12” wide channels come in 20 inch lengths (1/2 meter).
Pro Series Channels Mean a Flexible Layout
A key feature of the Pro Series trench drain product line is the ability to cut the channels to any desired size. The channels come with a “double ridged” cut line every four inches (4”) along the length of the channel. This makes it possible to trim, for instance, 8 or 12 inches from the channel in order to custom fit the drain into a tight area.
Trim the channel using a simple hand saw. By making your cut in the slot formed by the double ridges, you can easily change the length of the drain while retaining an edge that allows all the standard hardware (end caps and other channels) to be attached . There is no patching of the channel in a custom length situation.
While you can cut a channel to a specific length, specialty channels are available for making 45 and 90 degree bends in the drain.Side outlets are available in 5” and 8” wide channels. Another notable feature is that every channel has a bottom knockout. This gives you flexibility when it comes time to place a bottom discharge. You can place a bottom outlet wherever you want.
Pro Series Grates: Know Your Options
Grating options are not extensive with this brand and vary by channel size. For instance, the 3” wide Pro Series channel only has a gray plastic grate suitable for pedestrian or light vehicle traffic. This may be adequate for home owners that are looking for a budget driveway drain.
The 5” wide Pro Series drain, however, has the most grating options. Plastic slotted grates (class B loading) are available in six (6) colors. Perforated plastic grating is available, but only in gray. A cast iron grate and a high impact resistant plastic slotted grate are also available in 5” width.
The 8” and 12” wide Pro Series products have fewer grating options. With the 8” wide channels, you have a choice of three plastic grates, one of which is perforated, and one slotted cast iron grate. The 12” wide channel only has a plastic slotted grate (light vehicle traffic) and a cast iron grate for heavy traffic. All grates, no matter the width, come in 20 inch lengths.
One thing I like about the Pro Series product line over other NDS brands (such as the Mini or Spee-D series) is that it offers more durability and life to your drain system because of the grate to channel width relationship. I feel it is important to have your grate wider than the channel of the trench. This is particularly important in plastic trench drain products. If the grate is wider than the channel, then the concrete that surrounds the trench will be giving added strength to the channel. Systems that don’t have this added support have to rely solely on the strength of the plastic channel. In this later case, if the ledge that supports the grate breaks, the load capabilities of the grate fail. More on this when I cover other NDS channel drains.
List prices of the NDS Pro Series cover a broad spectrum. The least expensive is, of course, the 3” wide system and prices go up as do the channel widths. Grates with higher load capabilities also come at a premium.