NDS Revamps 5 inch Pro Series

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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.

Rebar Connection

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.

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New channel design (left) vs. Old design (right)

Enhance Ribbing

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.

  1. It acts as a guide to assist in manual trimming of the channel,
  2. It gives more rigidity to the channel body, and
  3. It is part of a new, snap-fit tongue-and-groove channel connection design.

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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.

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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.

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 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:

  1. 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!!
  2. 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.

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Channel Weight

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.!!!

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