The Delta 400-DST is a single-handle kitchen faucet designed for four-hole, 8-inch center installations. This model incorporates Delta’s DIAMOND™ Seal Technology, offering enhanced durability and leak resistance. It also features a side sprayer, an 180° swivel spout, and integrated PEX supply lines to simplify installation. This article provides a detailed overview of the product's specifications, key features, and step-by-step installation guidance based on the available technical documentation.
Key Specifications and Features
The Delta 400-DST is a deck-mounted kitchen faucet designed for residential and commercial applications. It is manufactured from brass and features a chrome-plated finish. The model supports 4-hole installations with an 8-inch center spacing and is ADA compliant, making it suitable for a wide range of kitchen layouts and accessibility requirements.
Key technical specifications include:
- Flow rate: 1.8 gpm at 60 psi
- Spout height: 4–3/4 inches
- Spout reach: 8–2/3 inches
- Swivel spout: 180° rotation
- Material: Brass body with chrome plating
- Mounting type: Deck mount
- Number of holes: 4
- Handle type: Single lever
- Valve technology: DIAMOND™ Seal Technology
- Included components: Integrated PEX supply lines, side sprayer, deck plate
The faucet is compliant with several industry standards, including ASME A112.18.1/CSA B125.1, ASME A112.18.6, and ANSI A117.1. It also meets California green building standards and adheres to lead content regulations (0.25% weighted average).
Installation Overview and Required Tools
Installation of the Delta 400-DST requires a surface-mounted sink or countertop with four pre-drilled holes spaced 8 inches apart. The faucet is designed for ease of installation, with integrated supply lines and a single-handle design to reduce the need for on-site assembly. However, due to the complexity of plumbing connections and the need for precision, professional installation is strongly recommended.
Required tools for installation include:
- Basin wrench
- Thread sealant (such as Teflon tape or pipe dope)
- Standard plumbing tools (wrenches, screwdrivers)
The installation process involves securing the faucet to the sink deck using the included mounting hardware, connecting the water supply lines to the valve body, and attaching the side sprayer. The integrated PEX supply lines reduce the number of connections required, making the installation process more straightforward than traditional models.
Step-by-Step Installation Procedure
The installation of the Delta 400-DST should be carried out by a licensed plumber or a qualified DIY enthusiast with experience in kitchen faucet installations. Below is a detailed step-by-step guide based on the manufacturer's documentation:
Prepare the Sink and Mounting Area
Ensure the sink or countertop has four pre-drilled holes spaced 8 inches apart. Clean the mounting area to remove any debris or sealant residue from previous installations.Install the Deck Plate (if applicable)
If the sink lacks a built-in deck plate, install the included deck plate over the mounting holes. Secure it using the provided screws to create a stable base for the faucet.Mount the Faucet
Align the faucet with the mounting holes and insert the screws through the faucet base and into the sink. Tighten the screws using a screwdriver or wrench to secure the faucet in place.Connect the Water Supply Lines
The Delta 400-DST includes integrated InnoFlex PEX supply lines, which reduce the number of connections and simplify installation. Connect the supply lines to the water shut-off valves beneath the sink. Apply thread sealant to the threads before tightening the connections to prevent leaks.Install the Side Sprayer
The side sprayer is connected via a flexible hose that links to the faucet body. Route the hose to the desired location on the sink and secure it in place. Attach the sprayer to the hose using the provided connectors and tighten with a wrench.Install the Valve Cartridge
The DIAMOND™ Seal Technology cartridge is pre-installed in the faucet body. Ensure the cartridge is properly seated and aligned with the valve ports. This step is typically performed at the factory, but verification may be necessary in the field.Secure the Handle and Test the Faucet
Attach the single lever handle to the faucet body using the provided screws. Turn on the water supply and test the faucet for leaks. Adjust the handle to ensure smooth operation and proper water flow.Final Inspection and Compliance Check
Verify that the installation meets local plumbing codes and that all connections are secure. Confirm that the faucet functions as expected and complies with ADA standards if applicable.
Maintenance and Warranty
Delta provides a 5-year limited warranty for the 400-DST model, covering defects in materials and workmanship under normal use and maintenance. The DIAMOND™ Seal Technology is designed to reduce wear and tear on internal components, extending the lifespan of the faucet and minimizing the need for maintenance.
For optimal performance and longevity, users should:
- Regularly clean the faucet with a mild detergent and a soft cloth to prevent buildup of mineral deposits or grime.
- Avoid using abrasive cleaners or tools that could damage the chrome finish.
- Periodically check for leaks or signs of wear, particularly at the handle and sprayer connections.
If any issues arise, contact Delta’s customer service or a licensed plumber for assistance. The warranty does not cover damage caused by improper installation, misuse, or modifications to the product.
Design and Ergonomics
The Delta 400-DST features a low-arc, swing spout that provides a clear view of the sink basin while allowing for easy maneuvering. The spout’s 180° swivel design accommodates both single and double-basin sinks, making it a versatile option for a wide range of kitchen layouts.
The single lever handle is designed for ease of use, with a smooth, ergonomic shape that reduces strain during operation. The handle’s lever action allows for precise control of water temperature and flow, making it suitable for both everyday use and accessibility needs.
The side sprayer is an additional feature that enhances the functionality of the faucet. It provides a powerful stream of water for rinsing produce, cleaning dishes, or filling large pots. The sprayer is connected via a flexible hose and can be mounted at a convenient location on the sink.
Compliance and Standards
The Delta 400-DST meets several key compliance standards, including:
- ASME A112.18.1/CSA B125.1: This standard governs the performance and durability of ceramic disk and cartridge-type faucets.
- ASME A112.18.6: This standard ensures the faucet meets the requirements for accessibility and usability.
- ANSI A117.1: This standard ensures the product is accessible to individuals with disabilities.
- California Green Building Standards (CAL Green): The faucet is water-efficient and meets environmental sustainability criteria.
- Lead Content Regulation (0.25% weighted average): The product complies with federal and state regulations on lead content in plumbing fixtures.
These standards ensure that the Delta 400-DST is safe, durable, and suitable for use in both residential and commercial settings.
Conclusion
The Delta 400-DST is a well-engineered kitchen faucet designed for 4-hole, 8-inch center installations. It features DIAMOND™ Seal Technology, an integrated PEX supply line system, and an ADA-compliant design, making it a reliable and user-friendly option for a wide range of kitchen applications. Installation requires standard plumbing tools and is best performed by a licensed professional to ensure compliance with local codes and optimal performance.
With a 5-year limited warranty, a durable brass body, and a chrome-plated finish, the 400-DST offers long-term value and minimal maintenance. Its low-arc spout, 180° swivel, and side sprayer enhance functionality, while its compliance with industry standards ensures safety and quality.
For users seeking a reliable, high-performance kitchen faucet with a modern design and advanced features, the Delta 400-DST is an excellent choice.