Sea Tech 81903047 AquaLock Manifold Dual Stem Body 1 In CTS x 1/2 In CTS Plastic

The Sea Tech (Watts AquaLock) 81903047 is a 1-inch CTS x 1/2-inch CTS plastic manifold dual stem body designed for quick-connect plumbing manifold systems used in marine, RV, and residential water distribution applications. This 35 Series component features a 1-inch male CTS stem inlet and a 1-inch female quick-connect CTS outlet, with dual 1/2-inch female quick-connect CTS side ports for branching water supply lines to individual fixtures.

Constructed from polysulfone high-performance thermal plastic in white, this stem body incorporates Sea Tech's exclusive O-ring guide for enhanced sealing reliability. The O-ring guide protects the O-ring from damage during connection and ensures a consistent zero-leak fit every time. Once connected, tubing can still swivel freely under maximum pressure, making it ideal for vibrating and dynamic environments such as boats and RVs.

Key Features:

• 1 In CTS male stem x 1 In CTS female quick-connect inline connection
• Dual 1/2 In CTS quick-connect side ports (left and right) for distribution to fixtures
• Exclusive O-ring guide ensures zero-leak, reliable connections
• Tubing rotates under pressure for flexible, vibration-resistant installations
• Compatible with copper, CPVC, PEX, LDPE, MDPE, HDPE, and polybutylene tubing
• No tools required — push-to-connect and disconnect design
• Made from polysulfone high-performance thermal plastic
• White finish; sold individually without retail packaging
• Part of the modular AquaLock / Sea Tech 35 Series manifold system

The Sea Tech 81903047 manifold dual stem body is a core building block of the AquaLock modular manifold system, which operates similarly to an electrical breaker box — water enters through the main supply and is distributed individually to each fixture, with each outlet independently controllable. Snap additional stem bodies onto the end of an existing manifold to expand capacity as needed.

Note: Watts has rebranded Sea Tech to Watts AquaLock. Part numbers remain unchanged; packaging and color may vary during the transition.