Heating and Cooling› Air Conditioning

Watts Water Quality

STACKABLE VALVE 1/2IN CTS X 1/4IN

$19.56

SKU: W00P 3543-1004

In Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Watts Water Quality AquaLock 3543-1004 is a reducing stackable valve designed for quick and easy installation on hot and cold water lines. It features a push-to-connect system that requires no special tools and is compatible with a variety of tubing materials including copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene.

The valve is constructed with an engineered polymer body and stainless steel components, ensuring durability and reliable performance. It is rated for 180°F at 100psi and 75°F at 250psi, making it suitable for a range of water system applications.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandWatts Water Quality
Part NumberW00P 3543-1004

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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