SIPHON VORTEX LOW PROFILE ONE-PIECE

TOILETS

INTRODUCTION

This service instruction will help you understand the opera￿ tion and repair of Kohler low profile one￿piece toilets.

The following models are included in these instructions:

K-3378-EB PILLOW TALK K-3383-EB PALARRE

K-3385-EB ROCHELLE

K-3397-EB SAN RAPHAEL

K-3402-EB RIALTO

K-3408-EB CABERNET

THEORY OF OPERATION

Consider how a low profile, one￿piece toilet differs from the close￿coupled toilet. All the water in a close coupled toilet is held in a tank that is above the rim of the bowl. Water to the rim and jet is supplied by gravity.

On the other hand, a one￿piece toilet holds all the tank water below the rim of the bowl as shown in Fig. #1.

Fig. #1

When the trip lever is actuated, water enters the supply valve and flows to the diverter valve. At this point all line water is diverted to the rim. The tank water is only used to start the water action in the bowl, and to direct water to the upleg of the trapway to start the siphonic action as illus￿ trated in Fig. #2.

Fig. #2

After the flush is completed, the diverter valve directs water to the rim for bowl refill, and to the tank for tank refill.

Since water which only will be directed to the jet is stored in the tank, sufficient water to the rim must be supplied by the supply valve as shown in Fig. #3.

Fig. #3

106423-0290

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Kohler K-3378-EB, K-3385-EB, K-3402-EB manual Introduction, Theory of Operation
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K-3402-EB, K-3378-EB, K-3385-EB specifications

Kohler, a brand synonymous with quality and innovation in bathroom fixtures, offers a range of stylish and high-performance toilets, including the popular K-3385-EB, K-3378-EB, and K-3402-EB models. Each of these toilets combines modern design with advanced technologies to provide exceptional performance and comfort.

The Kohler K-3385-EB, also known as the “Highline,” features a classic two-piece design that integrates seamlessly into any bathroom decor. One of its standout attributes is the Chair Height design, which offers a comfortable seat height that makes it ideal for users of all ages. The toilet is also equipped with Kohler's AquaPiston flushing technology, enabling a powerful flushing action with just a single flush. This technology enhances the toilet's performance while ensuring efficient water usage.

Next, the K-3378-EB, or the “Comfort Height” toilet, follows a similar aesthetic as the K-3385-EB but is designed with additional ergonomic benefits. The Comfort Height feature brings the seat to a higher level, promoting ease of use, especially for individuals with mobility issues. This model also utilizes the AquaPiston flush system, which provides a versatile and effective flush while consuming only 1.28 gallons per flush. The K-3378-EB is not only practical but also eco-friendly, making it an excellent choice for environmentally conscious consumers.

Lastly, the Kohler K-3402-EB introduces a sleek, modern silhouette, perfect for contemporary bathrooms. This model sports an elongated bowl design that enhances user comfort and is complemented with the innovative DuraCeramic finish, which ensures durability and ease of cleaning. Like its counterparts, the K-3402-EB also employs AquaPiston technology to optimize flushing performance. It combines style, comfort, and advanced flushing capabilities, making it a superb choice for those seeking a blend of aesthetics and functionality.

In summary, the Kohler K-3385-EB, K-3378-EB, and K-3402-EB toilets showcase the brand's commitment to quality and innovation. With features like Chair Height and Comfort Height designs, AquaPiston flushing technology, and durable finishes, these toilets enhance the bathroom experience while also contributing to water conservation. Each model presents unique characteristics and aesthetics, catering to a range of preferences and needs while ensuring that Kohler continues to lead the way in bathroom solutions.
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