When expanding or reconfiguring a home or commercial water line, a 3/8 inch water line splitter (Add-A-Tee) is a practical, compact solution. These fittings allow you to branch a single supply into multiple outlets—perfect for refrigerators, ice makers, dishwashers, and additional fixtures. This guide highlights select 3/8″ compression tees from trusted brands, outlining key features, installation notes, and considerations to help you choose a safe, durable option for cold and hot water systems alike.
| Product | Brand | Inlet / Outlet | Material | Notes |
|---|---|---|---|---|
| Brass Angle Stop Add-A-Tee Valve | YUHX | 3/8″ female inlet – 3/8″ male outlets (x3) | Lead-free brass | Lead-free, chrome-plated |
| SUNGATOR 3/8 Inch Compression Tee | SUNGATOR | 3/8″ x 3/8″ x 3/8″ (inlet x outlets) | Lead-free brass | 2-pack include sealing tape |
| Ondiomn Tee Stop Valve Add-A-Tee | Ondiomn | 3/8″ compression inlet – 3/8″ outlets (x2) | Lead-free brass | Chrome-plated; easy installation |
| Uenede Brass Angle Stop Add-A-Tee | Uenede | 3/8″ compression inlet – 3/8″ outlet (x2) | Brass | Built-in rubber gasket; rated to 200°F / 200 PSI |
| Exclaith 2 Pcs 3/8 Inch Compression Tee | Exclaith | 3/8″ inlet – 3/8″ outlets (x2) + 9/16″ outlet | Copper | Includes 2 connectors with sealing gasket |
Brass Angle Stop Add-A-Tee Valve, 3/8 x 3/8 x 3/8 Compression
The YUHX 3/8 x 3/8 x 3/8 compression tee provides a simple method to tap into an existing angle stop valve and extend a 3/8″ line to an additional fixture. It is designed for both cold and hot water systems and is made from lead-free brass with chrome plating for durability in residential and commercial settings. Important: compression threads differ from NPT, NPS, and BSP; verify thread type before purchasing to ensure compatibility with your shut-off valve and piping.
SUNGATOR 3/8 Inch Compression Tee, 3 Way Splitter (2-Pack)
This Sungator two-pack features lead-free brass construction with chrome plating, offering a robust, durable option for adding a new outlet to an existing line. The hardware is designed to be compatible with standard 3/8″ compression fittings and is suitable for use with potable and non-potable water. The set includes sealing tape for a tighter seal and reduced risk of leaks.
Ondiomn Tee Stop Valve Add-A-Tee
Ondiomn’s 3/8″ compression tee includes a 1/4-turn stop valve on the branch, allowing quick control over the new line. Made of lead-free brass with a chrome finish, it is designed for both residential and commercial use and suitable for a variety of appliances and fixtures, including dishwashers, washing machines, and toilets. It is intended for easy, tool-free installation without specialized equipment.
Uenede 2PCS Brass Angle Stop Add-A-Tee
Uenede offers a two-pack of brass Add-A-Tee splitters with 3/8″ compression inlets and outlets. The fittings include a built-in rubber gasket to improve sealing and are rated for up to 200°F and 200 PSI. Suitable for adding outlets to water shut-off lines for toilets, sinks, dishwashers, refrigerators, and more. For best results, use Teflon tape or thread sealant on threaded joints to enhance leak resistance.
Exclaith 2 Pcs 3/8 Inch Compression Tee Valve Set
Exclaith provides a copper-based compression tee valve set, offering a reliable option for standard plumbing systems. Each 3/8″ inlet x 3/8″ x 9/16″ outlet configuration is designed to fit standard plumbing with robust sealing gaskets to minimize leaks. Copper construction adds durability and compatibility with a wide range of fixtures and appliances in both cold and hot water lines.
Buying Guide: Key Purchase Considerations And Comparisons
When selecting a 3/8″ water line splitter, consider the following factors to ensure compatibility, reliability, and longevity:
- Material and safety: Lead-free brass and copper fittings reduce the risk of corrosion and contamination in potable water systems. Chrome plating improves durability and aesthetics, especially for exposed installations.
- Connection type and thread compatibility: Most 3/8″ splitters use compression fittings. Confirm that the inlet and outlets match your existing angle stops, valves, and appliances. Do not force mismatched threads, as this can cause leaks or damage.
- Flow control and shut-off: A 1/4-turn valve on the branch port provides convenient isolation for maintenance and pressure management. If you need precise pressure control, verify the valve design and operation before purchase.
- Number of outlets and outlet sizing: Common configurations include 2 or 3 outlets. Ensure the total outlet size and placement meet your fixtures’ needs without overly restricting flow to others.
- Temperature and pressure ratings: Check rated maximums (e.g., 200°F, 200 PSI) to ensure compatibility with your hot water system and local code requirements.
- Installation ease: Some sets include sealing tape and gaskets, reducing the number of accessories you must buy separately. Consider whether you want a multi-pack (2 or more) for future expansion.
- Warranty and certifications: Look for certifications for potable water use and warranty coverage that can provide peace of mind after installation.
- Compatibility with existing fixtures: Before purchasing, map out all intended connections and ensure outlet threads and sizes align with your devices (dishwasher, refrigerator ice maker, etc.).
- Leak prevention: Use thread sealant or pipe dope where appropriate on threaded joints and verify seals after initial pressurization.
- Maintenance and accessibility: Position splitters where you can access valves for routine checks, drip checks, or future replacement without disassembling walls or cabinets.
By evaluating these criteria across the five featured products, you can choose a 3/8″ water line splitter that aligns with your system’s requirements, ensuring a reliable supply to multiple fixtures without compromising performance.